Skip over navigation
Printable version [PDF]
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B 7/10; overvoltage protection resistors, resistive arresters H01C 7/12, H01C 8/04; electrolytic self-interrupters H01G 9/18; switching devices of the waveguide type H01P; devices for interrupted current collection H01R 39/00; overvoltage arresters using spark gaps H01T 4/00; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K 17/00)
Definition statement
This subclass covers:

Electric switches, i.e. single points of mechanically operable electrical connection (or interruption). Types, details and manufacture thereof, as detailed below .

Relays, i.e. switching devices having contacts which are operated from electric inputs which supply, directly or indirectly, all the mechanical energy necessary to cause both the closure and the opening of the contacts. Types, details and manufacture thereof. Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current.

Selectors, i.e. arrays of electric switches which selectively connect some inputs out of a plurality of inputs to some outputs out of a plurality of outputs. Types, details, and manufacture thereof in groups H01H 63/00, H01H 65/00 and H01H 67/00.

Protective devices like: circuit-breaking switches, protective switches, fuses, evaporation devices, details and manufacture thereof. This subclass also covers (in groups H01H 69/00 - H01H 87/00) devices for the protection of electric lines or electric machines or apparatus in the event of undesired change from normal electric working conditions, the electrical condition serving directly as the input to the device.

Mechanical structural details of control members of switches or of keyboards such as keys, push-buttons, levers or other mechanisms for transferring the force to the activated elements, even when they are used for controlling electronic switches.

Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle.

Relationship between large subject matter areas

Circuit arrangements for the automatic protection of electric lines or electric machines or apparatus in the event of an undesired change from normal working conditions: H02H

References relevant to classification in this subclass
This subclass does not cover:

Electronic switching or gating, i.e. not by contact-making or -braking

Contact cables

Electrolytic self-interrupters

Bases, casings, or covers accommodating two or more switching devices or for accommodating a switching device as well as another electric component, e.g. bus-bar, line connector

Casings for electrical apparatus in general

Mechanical details directly producing electronic effects

Switches combined with plug-and-socket connectors

Controlling members for hand actuation by rotary movement, e.g. hand wheels

Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuit-breaker in the network

Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection

Examples of places where the subject matter of this subclass/group is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Switching arrangements for the supply or distribution of electric power

Mounting switch and fuse separately on, or in, common support

Frameworks for mounting two or more relays or for mounting a relay and another electrical component

Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing; Gas-insulated switchgear

Switches for telephonic communication

Keyboards for special applications, see the relevant subclasses or groups, e.g.

Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, the controlling member being movable by hand about orthogonal axes, e.g. joysticks

Lever attached to steering wheel for controlling the lights of a car, e.g. steering column stalk switches

Switches mounted on the steering wheel

Informative references
Attention is drawn to the following places, which may be of interest for search:

Overvoltage protection resistors, resistive arresters

Switching devices of the waveguide type

Electric connections in general

Devices for interrupted current collection; Rotary current collectors, distributors, or interrupters

Overvoltage arresters using spark gaps

Arcing horns per se

Arrangements for locating electric faults; Testing of relays

Clocks with attached or built-in means operating any device at preselected times or after preselected time intervals

Processes or apparatus specially adapted for the manufacture or treatment of micro-structural devices or systems, e.g. in combination with electrical devices

Micro-mechanical devices, comprising flexible or deformable elements

Sensing elements for providing continuous conversion of a variable into mechanical displacement

Measuring distances, levels or bearings

Measuring liquid level

Temperature-responsive elements in general

Measuring electric values

Magnets in general

Electromagnets; Actuators including electromagnets

Cores, Yokes, or armatures in general

Magnetic coils or windings in general

Circuit arrangements for obtaining desired operating characteristics

Variable transformers or inductances having provision for tap-changing without interrupting the load current

Disposition or arrangement of fuses on boards

Input arrangements for converting discrete items of information into a coded form; Programmable keyboards

Installations of electric cables or lines in or on buildings, equivalent structures or vehicles

Distribution boxes; Connection or junction boxes

Constructional features of telephone sets; Construction or mounting of dials or of equivalent devices

Capacitors in which the capacitance is varied by using variation of distance between electrodes

Selecting apparatus or arrangements in general

Special rules of classification within this subclass

The use of the Indexing Code scheme H01H 1/00 - H01H 89/10 is mandatory to classify additional (non-invention) information.

The use of the deep indexing scheme H01H 2201/00 - H01H 2239/078 is mandatory whenever appropriate.

The following IPC groups are not used in the internal ECLA classification scheme. Subject matter covered by these groups is classified in the following ECLA groups:

H01H33/575 covered by H01H 33/56

H01H33/825 covered by H01H 33/82

H01H33/835 covered by H01H 33/83

H01H33/867 covered by H01H 33/86

H01H33/873 covered by H01H 33/86

H01H33/915 covered by H01H 33/91

H01H33/985 covered by H01H 33/98

H01H33/99 covered by H01H 33/98

Further information:

  • Details only described with reference to, or clearly only applicable to, switching devices of a single basic type, are classified in the group appropriate to switching devices of that basic type, e.g. H01H 19/02 or H01H 75/04.

Details of an unspecified type of switching device, or disclosed as applicable to two or more kinds of switching devices designated by the terms or expressions "switches", "relays", "selector switches", and "emergency protective devices", are classified in groups H01H 1/00 - H01H 9/00.

Details of an unspecified type of switch, or disclosed as applicable to two or more types of switches as defined by groups H01H 13/00 - H01H 43/00 and subgroups H01H 35/02, H01H 35/06, H01H 35/14, H01H 35/18, H01H 35/24 and H01H 35/42, all hereinafter called basic types, are classified in groups H01H 1/00 - H01H 9/00.

Apparatus or processes specially adapted for manufacturing of electric switches of an unspecified type are classified in group H01H 11/00.

Details of contact arrangements or operating mechanisms for tap changer devices are classified in the subgroup H01H 9/0005.

  • Mechanical structural details of control members specially adapted for rectilinearly movable switches such as keys or push-buttons having a plurality of operating members associated with different sets of contacts, e.g. keyboards, are classified in the subgroup H01H 13/70.

Processes specially adapted for manufacturing of rectilinearly movable switches such as keys or push-buttons having a plurality of operating members associated with different sets of contacts, e.g. keyboards, are classified in the subgroup H01H 13/88.

Earthing or grounding switching devices are classified in the subgroup H01H 31/003.

Vacuum switches are classified in the subgroup H01H 33/66. Combinations of vacuum switches with other type of switch, e.g. for load break switches are classified in the subgroup H01H 33/6661.

  • Switches actuated by change of magnetic field or of electric field are classified in the group H01H 36/00.
  • Thermally-actuated switches are classified in the group H01H 37/00.

Details of an unspecified type of relay, or disclosed as applicable to two or more types of relays as defined by groups H01H 51/00 - H01H 61/00, hereinafter called basic types, are classified in group H01H 45/00. Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current, are classified in group H01H 47/00.

Apparatus or processes specially adapted for manufacturing of relays are classified in group H01H 49/00.

  • Details of an unspecified protective switch or protective relay, or applicable to two or more types of protective devices as defined by groups H01H 73/00 - H01H 83/00, hereinafter called basic types, are classified in group H01H 71/00.

Apparatus or processes specially adapted for manufacturing of protective devices are classified in group H01H 69/00.

Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive are classified in group H01H 85/00.

  • The subgroup H01H 9/54 covers circuit arrangements not adapted to a particular application of an unspecified type of switching device and for which no provision exists elsewhere, e.g. combinations of mechanical switches and static switches or for ensuring operation of the switch at a predetermined point in the ac cycle, and is residual with respect to the groups H01H 1/00 - H01H 9/00 and H01H 69/00 - H01H 87/00.
  • The subgroup H01H 33/59 covers circuit arrangements not adapted to a particular application of a high-tension or heavy-current switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle, and is residual with respect to the groups H01H 31/00 - H01H 33/00.
  • Details only described with reference to, or clearly only applicable to, rectilinearly movable switches having operating members associated with different sets of contacts, e.g. keyboards, are classified in the deep indexing scheme for multilayer keyboard switches H01H 2201/00 - H01H 2239/078.
  • Details of an unspecified type of switching device, or disclosed as applicable to several kinds of switching devices or relating to the application field of the switching device are classified in a separate orthogonal indexing scheme (pending).
Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Acting, actuating or action

self-induced, e.g. not manually caused, movement of parts at one stage of the switching. Apply to all parts of the verbs "to operate"; "to actuate", and "to act", and to words derived therefrom, e.g. to "actuation" or "actuating"

Contacts

necessary elementary components of a switch that ensure the electrical connection, each switch comprising at least two contacts, and possibly more than two

Driving mechanism

means by which an operating force applied to the switch is transmitted to the moving contact or contacts

Key

push button

Operating

broader sense than "actuating", including the manually caused movement of parts at one stage of the switching.

Push button

knob or button that allows the manual operation of a switch in order to e.g. close an electric circuit

Relay

switching device having contacts which are operated from electric inputs which supply, directly or indirectly, all the mechanical energy necessary to cause both the closure and the opening of the contacts

Selector

array of electric switches which selectively connect some inputs out of a plurality of inputs to some outputs out of a plurality of outputs

Switch

single point of mechanically operable electrical connection (or interruption)

Switch site

physical location where the contacts can touch each other

Contacts (liquid contacts H01H 29/04)
References relevant to classification in this group
This group does not cover:

Liquid contacts

Special rules of classification within this group

Subject matter classifiable in more than one of the groups H01H 1/023 to H01H 1/029 should be classified in all relevant groups.

Composite materials
Glossary of terms
In this subgroup, the following terms (or expressions) are used with the meaning indicated:

Composite material

a material made of two or more different materials, e.g. coated material, layered materials or carbon fibres in a copper base or matrix

Bridging contacts {(for circuit breakers H01H 73/045)}
References relevant to classification in this group
This subgroup does not cover:

Bridging contacts for circuit breakers

by sliding (by rolling or wrapping H01H 1/16)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Rolling or wrapping

by magnetic force {(combined with electrodynamic opening H01H 77/101)}
References relevant to classification in this group
This subgroup does not cover:

Magnetic force combined with electrodynamic opening

Contact arrangements for providing make-before-break operation, e.g. for on-load tap changing {(for tap changers H01H 9/0016)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Contact arrangements for tap changers

Electric connections to or between contacts; Terminals ({for high tension switches H01H 33/025; for electromagnetic relays H01H 50/14; for circuit breakers H01H 71/08}; electric connections in general H01R)
References relevant to classification in this group
This subgroup does not cover:

Terminals for high tension switches

Terminals for electromagnetic relays

Terminals for circuit breakers

Informative references
Attention is drawn to the following places, which may be of interest for search:

Electric connections in general

Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces (cleaning by normal sliding of contacts H01H 1/18, H01H 1/36)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cleaning by normal sliding of contacts

Protective enclosures, baffle plates, or screens for contacts (for arc-extinguishing H01H 9/30; for mercury contacts H01H 29/04)
References relevant to classification in this group
This subgroup does not cover:

Protective enclosures, baffle plates, or screens for arc-extinguishing

Protective enclosures, baffle plates, or screens for mercury contacts

Mechanisms for operating contacts (snap-action arrangements H01H 5/00; devices for introducing a predetermined time delay H01H 7/00; {for tap changers H01H 9/0027}; thermal actuating or release means H01H 37/02)
References relevant to classification in this group
This group does not cover:

Snap-action arrangements

Informative references
Attention is drawn to the following places, which may be of interest for search:

Devices for introducing a predetermined time delay

Devices for tap changers

Thermal actuating or release means

using pneumatic or hydraulic actuator {(for storing energy in a spring motor H01H 3/301)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Storing energy in a spring motor

using dynamo-electric motor (for storing energy in a spring motor H01H 3/30)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Storing energy in a spring motor

using electromagnet (for storing energy in a spring motor H01H 3/30; for operating relays H01H 45/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Storing energy in a spring motor

Operating relays

Driving mechanisms, i.e. for transmitting driving force to the contacts (snap-action arrangements H01H 5/00; introducing a predetermined time delay H01H 7/00)
References relevant to classification in this group
This subgroup does not cover:

Snap-action arrangements

Introducing a predetermined time delay

Lubricating means structurally associated with the switch (for lubricating contact-making surfaces H01H 1/60)
References relevant to classification in this group
This subgroup does not cover:

Lubricating contact-making surfaces

Energy stored by deformation of elastic members (by deformation of bimetallic elements in thermally-actuated switches H01H 37/54)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Energy stored by deformation of bimetallic elements in thermally-actuated switches

Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (time or time-programme switches H01H 43/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Time or time-programme switches

with thermal timing means (thermally actuated switches H01H 37/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Thermally actuated switches

Devices for ensuring operation of the switch at a predetermined point in the ac cycle (circuit arrangements H01H 9/56)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements

Details of switching devices, not covered by groups H01H 1/00 to H01H 7/00(casings for switchgear H02B 1/26; casings for electrical apparatus in general H05K 5/00)
References relevant to classification in this group
This group does not cover:

Casings for switchgear

Informative references
Attention is drawn to the following places, which may be of interest for search:

Casings for electrical apparatus in general

Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B 1/26)
References relevant to classification in this group
This subgroup does not cover:

Accommodating more than one switch or a switch and another electrical component

Adaptation for built-in fuses (mounting switch and fuse separately on, or in, common support H02B)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting switch and fuse separately on, or in, common support

Interlocking, locking, or latching mechanisms (contacts adapted to act as latches H01H 1/52; by an auxiliary movement of the operating part or of an attachment thereto H01H 3/20; {for withdrawable switchgear H02B 11/00})
Informative references
Attention is drawn to the following places, which may be of interest for search:

Contacts adapted to act as latches

Auxiliary movement of the operating partor of an attachment thereto

Withdrawable switchgear

for interlocking between casing, cover, or protective shutter and mechanism for operating contacts {(explosion-proof cases H01H 9/045; built-in fuses and interlocking mechanisms H01H 9/104; by automatic release of circuit breakers H01H 71/126)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Explosion-proof cases

Built-in fuses and interlocking mechanisms

By automatic release of circuit breakers

for interlocking two or more switches ({H01H 13/568 takes precedence}; by a detachable member H01H 9/28; {for electromagnetic relays H01H 50/323})
References relevant to classification in this group
This subgroup does not cover:

Contacts also returning by some external action, e.g. interlocking, protection, remote control

Informative references
Attention is drawn to the following places, which may be of interest for search:

Detachable member

Electromagnetic relays

for locking switch parts by a key or equivalent removable member (switches operated by a key H01H 27/00; locking by removable part of two-part coupling device H01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches operated by a key

Locking by removable part of two-part coupling device

Auxiliary contacts on to which the arc is transferred from the main contacts (using arcing-horns H01H 9/46)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Arcing-horns

Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc {(multiple parallel contact bars H01H 1/226)}
References relevant to classification in this group
This subgroup does not cover:

Multiple parallel contact bars

using arcing-horn (using blow-out magnet H01H 9/44; arcing-horns per se H01T 4/14)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow-out magnet

Arcing-horns per se

Cooling of switch parts (cooling of contacts H01H 1/62)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cooling of contacts

Apparatus or processes specially adapted for manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H 13/88; processes or apparatus specially adapted for the manufacture or treatment of micro-structural devices or systems, e.g. in combination with electrical devices, B81C)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards

Processes or apparatus specially adapted for the manufacture or treatment of micro-structural devices or systems, e.g. in combination with electrical devices

Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch (wherein the operating part is flexible H01H 17/00)
References relevant to classification in this group
This group does not cover:

Switches wherein the operating part is flexible

Details (specially adapted for rectilinearly movable switches having operating members associated with different sets of contacts, e.g. keyboards, H01H 13/70)
References relevant to classification in this group
This subgroup does not cover:

Specially adapted for rectilinearly movable switches having operating members associated with different sets of contacts, e.g. keyboards

acting with snap action (depending upon deformation of elastic member H01H 13/26)
References relevant to classification in this group
This subgroup does not cover:

Snap action depending upon deformation of elastic member

the contact returning to its original state upon manual release of a latch (latch released by second push-button H01H 13/68)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Latch released by second push-button

having two operating members, one for opening and one for closing the same set of contacts (single operating member protruding from different sides of switch casing for alternate pushing upon opposite ends H01H 15/22)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Single operating member protruding from different sides of switch casing for alternate pushing upon opposite ends

having a plurality of operating members associated with different sets of contacts, e.g. keyboard ({keyboards specially adapted for specific applications, see the relevant subclasses or groups, e.g. B41J, G06F 3/023, H04L 17/00, H04M 1/00; multiple switches specially adapted for electromechanical clocks or watches G04C 3/005}; mounting together a plurality of independent switches H02B)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Keyboards specially adapted for specific applications, see the relevant subclasses or groups

Multiple switches specially adapted for electromechanical clocks or watches

Mounting together a plurality of independent switches

characterised by the layers, e.g. by their material or stucture (H01H 13/703 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

Spacers between contact carrying layers

characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback (legends H01H 13/83)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Legends

Switches having flexible operating part adapted only for pulling, e.g. cord, chain {(for emergency stop switches H01H 3/0226)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Flexible operating part adapted for emergency stop switches

Stationary parts (guides H01H 17/14)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Guides

Movable parts (guides H01H 17/14)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Guides

Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid external to the switch, e.g. by a hand (rotary current collectors, distributors or interrupters H01R 39/00)
References relevant to classification in this group
This group does not cover:

Rotary current collectors, distributors or interrupters

Contacts actuated by axial cams (H01H 19/6355 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

Axial cam devices for transforming the angular movement into linear movement along the axis of rotation

Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand (tumbler or rocker switches H01H 23/00; switches having an operating part movable angularly in more than one plane H01H 25/04)
References relevant to classification in this group
This group does not cover:

Tumbler or rocker switches

Switches having an operating part movable angularly in more than one plane

Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
Glossary of terms
In this group, the following terms (or expressions) are used with the meaning indicated:

Rocking

as pivotal motion in one plane about an axis parallel to the switch faceplate and located substantially centrally between the ends of the rocker button

Switches operated by a removable member, e.g. key, plug, plate; Switches operated by setting members according to a single predetermined combination out of several possible settings (locking switch parts to prevent operation H01H 9/28; combined with plug-and-socket connectors H01R; with current-carrying plug H01R 31/08)
References relevant to classification in this group
This group does not cover:

Locking switch parts to prevent operation

Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches combined with plug-and-socket connectors

Switches with current-carrying plug

Switches having at least one liquid contact (solid contacts wetted or soaked with mercury H01H 1/08)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Solid contacts wetted or soaked with mercury

operated by tilting contact-liquid container (centrifugal mercury switches H01H 29/26)
References relevant to classification in this group
This subgroup does not cover:

Centrifugal mercury switches

with contact made by a liquid jet, e.g. earthing switch with contact made by jet of water (operated by direct electrodynamic action H01H 53/00)
References relevant to classification in this group
This subgroup does not cover:

Switches operated by direct electrodynamic action

Air-break switches for high tension without arc-extinguishing or arc-preventing means (in combination with high tension or heavy-current switches with arc-extinguishing or arc-preventing means H01H 33/00; switching arrangements for the supply or distribution of electric power H02B)
References relevant to classification in this group
This group does not cover:

Air-break switches in combination with high tension or heavy-current switches with arc-extinguishing or arc-preventing means

Informative references
Attention is drawn to the following places, which may be of interest for search:

Switching arrangements for the supply or distribution of electric power

Interlocking mechanisms (for interlocking with high-tension or heavy-current switches having arc-extinguishing or arc-preventing means H01H 33/52)
References relevant to classification in this group
This subgroup does not cover:

Interlocking with high-tension or heavy-current switches having arc-extinguishing or arc-preventing means

for interlocking two or more switches (for interlocking with high-tension or heavy-current switches having arc-extinguishing or arc-preventing means H01H 33/52)
References relevant to classification in this group
This subgroup does not cover:

Interlocking with high-tension or heavy-current switches having arc-extinguishing or arc-preventing means

Means for extinguishing or preventing arc between current-carrying parts (for switches in general H01H 9/30)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Means for extinguishing or preventing arc between current-carrying parts for switches in general

Auxiliary contacts on to which the arc is transferred from the main contacts (using arcing horns H01H 33/20)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Auxiliary contacts using arcing horns

using blow-out magnet {(for vacuum switches H01H 33/664; pressure-generated arcs rotated by a magnetic field H01H 33/982)}
References relevant to classification in this group
This subgroup does not cover:

Vacuum switches

Pressure-generated arcs rotated by a magnetic field

using arcing horns (using blow-out magnet H01H 33/18; arcing horns per se H01T 4/14)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Using blow-out magnet

Arcing horns per se

using dynamo-electric motor (for storing energy in a spring motor H01H 33/40)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Storing energy in a spring motor

using electromagnet (for storing energy in a spring motor H01H 33/40)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Storing energy in a spring motor

Devices for ensuring operation of the switch at a predetermined point in the ac cycle (circuit arrangements H01H 33/59)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements

Cases (for switchgear H02B 1/26); Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cases for switchgear

Oil reservoirs or tanks; Lowering means therefor (associated with withdrawal mechanism for isolation of switch H02B 11/08)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Lowering associated with withdrawal mechanism for isolation of switch

wherein the break is in gas (in air at atmospheric pressure H01H 33/62; vacuum switches H01H 33/66)
References relevant to classification in this group
This subgroup does not cover:

Breaks in air at atmospheric pressure

Informative references
Attention is drawn to the following places, which may be of interest for search:

Vacuum switches

wherein the break is in gas (in air at atmospheric pressure H01H 33/73)
References relevant to classification in this group
This subgroup does not cover:

Breaks in air at atmospheric pressure

wherein the break is in gas (in air at atmospheric pressure H01H 33/77)
References relevant to classification in this group
This subgroup does not cover:

Breaks in air at atmospheric pressure

this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc {(H01H 33/903 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

The movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism

the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow {(H01H 33/901 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

The movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc

Switches operated by change of a physical condition (operated by change of magnetic or electric field H01H 36/00; thermally-actuated switches H01H 37/00; time switches H01H 43/00; relays H01H 45/00 to H01H 61/00; sensing elements for providing continuous conversion of a variable into mechanical displacement G01)
References relevant to classification in this group
This group does not cover:

Operated by change of magnetic or electric field

Thermally-actuated switches

Time switches

Relays

Informative references
Attention is drawn to the following places, which may be of interest for search:

Sensing elements for providing continuous conversion of a variable into mechanical displacement

Special rules of classification within this group

A switching device is classified according to that physical condition which, when changed, acts as input to the device, e.g. external explosion causing pressure wave to act upon switch is classified in group H01H 35/24, an explosion produced within the switch in group H01H 37/00 if initiated by heat, in group H01H 39/00 if initiated electrically, and in group H01H 35/14 if initiated by an external blow.

Switches operated by change of speed (operated by change of fluid flow H01H 35/24)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches operated by change of fluid flow

Centrifugal switches (level of mercury displaced by centrifugal action H01H 29/26)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Level of mercury displaced by centrifugal action

Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch {(wherein the liquid constitutes a contact of the switch H01H 29/002)}
References relevant to classification in this group
This subgroup does not cover:

Switches operated by change of acceleration, wherein the liquid constitutes a contact of the switch

Switches operated by change of liquid level or of liquid density, e.g. float switch (wherein the liquid constitutes a contact of the switch H01H 29/00; by magnet carried on a float H01H 36/02)
References relevant to classification in this group
This subgroup does not cover:

Switches operated by change of acceleration, wherein the liquid constitutes a contact of the switch

Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches operated by magnet carried on a float

Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow (wherein the change of pressure is caused by change of temperature H01H 37/36)
References relevant to classification in this group
This subgroup does not cover:

Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow wherein the change of pressure is caused by change of temperature

Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding {(specially adapted for electromechanical clocks or watches G04C 3/004)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches specially adapted for electromechanical clocks or watches

Thermally-actuated switches (electrothermal relays operated by electrical input H01H 61/00; protective switches with electrothermal release or actuation H01H 73/00 to H01H 83/00)
References relevant to classification in this group
This group does not cover:

Electrothermal relays operated by electrical input

Protective switches with electrothermal release or actuation

Bases; Housings; Mountings {(H01H 37/5427 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Encapsulated in sealed miniaturised housing

Thermally-sensitive members (temperature responsive elements in general G01K)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Temperature responsive elements in general

actuated due to expansion or contraction of a fluid with or without vaporisation (the fluid forming a contact of the switch H01H 29/04, H01H 29/30)
References relevant to classification in this group
This subgroup does not cover:

Fluid forming a contact of the switch

actuated due to expansion or contraction of a solid (deflection of a bimetallic element H01H 37/52)
References relevant to classification in this group
This subgroup does not cover:

Deflection of a bimetallic element

Means for producing snap action (inherent in bimetallic element H01H 37/54; caused by a magnet H01H 37/66)
References relevant to classification in this group
This subgroup does not cover:

Inherent in bimetallic element

Snap action caused by a magnet

Resetting means {(H01H 37/5409 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Bistable switches; Resetting means for Bistable switches

Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling (for the electrical protection of electric lines or electric apparatus H01H 73/00 to H01H 83/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Electrical protection of electric lines or electric apparatus

Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material (fuses H01H 85/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Fuses

Switches providing a selected number of consecutive operations of the contacts by a single manual actuation of the operating part (for telephone communication H04M 1/26)
References relevant to classification in this group
This group does not cover:

Switches for telephone communication

Time or time-programme switches providing a choice of time intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed (clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals G04C 23/00; {apparatus which can be set and started to measure-off predetermined intervals G04F 3/06}; programme-control systems G05B 19/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals

Apparatus which can be set and started to measure-off predetermined intervals

Programme-control systems

Details of relays (electric circuit arrangements H01H 47/00; of electromagnetic relays H01H 50/00; details of electrically-operated selector switches H01H 63/00; {testing of relays G01R 31/00; relays for emergency protective circuit arrangements H02H})
References relevant to classification in this group
This group does not cover:

Electric circuit arrangements of electromagnetic relays

Relays for emergency protective circuit arrangements

Informative references
Attention is drawn to the following places, which may be of interest for search:

Electric circuit arrangements

Details of electrically-operated selector switches

Testing of relays

Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B 1/01, H04Q 1/08, H05K)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Frames for mounting two or more relays or for mounting a relay and another electric component

Electromagnetic or electrostatic shielding (casings H01H 45/02; {screening in general H05K 9/00})
Informative references
Attention is drawn to the following places, which may be of interest for search:

Casings

Screening in general

Ventilating; Cooling; Heating (for operating electrothermal relays H01H 61/013)
References relevant to classification in this group
This subgroup does not cover:

Operating electrothermal relays

Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current (circuit arrangements for electro-magnets in general H01F 7/18)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements for electro-magnets in general

for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current {(with switching regulator H01H 47/325)}
References relevant to classification in this group
This subgroup does not cover:

Switching regulators

for introducing delay in the operation of the relay (short-circuited conducting sleeves, bands or discs H01H 50/46)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Short-circuited conducting sleeves, bands or discs

Energising current supplied by magnetic amplifier {(magnetic amplifiers H03F 9/00)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Magnetic amplifiers

Details of electromagnetic relays ({H01H 51/28 takes precedence;} electric circuit arrangements H01H 47/00; details of electrically-operated select or switches H01H 63/00; { testing of relays G01R 31/00; electromagnets in general H01F 7/06; relays for emergency protective circuit arrangements H02H})
References relevant to classification in this group
This group does not cover:

Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed

Relays for emergency protective circuit arrangements

Informative references
Attention is drawn to the following places, which may be of interest for search:

Electric circuit arrangements

Details of electrically-operated select or switches

Testing of relays

Electromagnets in general

Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B 1/01, H04Q 1/08, H05K)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Frames for mounting two or more relays or for mounting a relay and another electric component

Electromagnetic or electrostatic shielding (casings H01H 50/02; {screening in general H05K 9/00})
Informative references
Attention is drawn to the following places, which may be of interest for search:

Casings

Screening in general

Ventilating; Cooling; Heating (for operating electrothermal relays H01H 61/013)
References relevant to classification in this group
This subgroup does not cover:

Operating electrothermal relays

Terminal arrangements {(for coils H01H 50/443)}
References relevant to classification in this group
This subgroup does not cover:

Terminal arrangements for coils

Magnetic circuit arrangements (cores, yokes, or armatures in general H01F 3/00; magnets in general H01F 7/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cores, yokes, or armatures in general

Magnets in general

Magnetic coils or winding (circuit arrangements H01H 47/00; in general H01F 5/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements

Magnetic coils or winding in general

Short-circuited conducting sleeves, bands, or discs {(for electromagnets H01F 7/1205)}
References relevant to classification in this group
This subgroup does not cover:

Sleeves, bands, or discs for electromagnets

Contact arrangements (contacts for switches in general H01H 1/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Contacts for switches in general

moving contact being rigidly combined with movable part of magnetic circuit {(for polarised relays H01H 51/2254, H01H 51/2281)}
References relevant to classification in this group
This subgroup does not cover:

Contacts for polarised relays

Driving arrangements between movable part of magnetic circuit and contact (structurally associated with contact spring sets H01H 50/58)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Driving arrangements structurally associated with contact spring sets

Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts (circuit arrangements for introducing delay H01H 47/18; short-circuited conducting sleeves, bands, or discs H01H 50/46)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements for introducing delay

Short-circuited conducting sleeves, bands, or discs

Thermal means (inherent in electrothermal relays H01H 61/00)
References relevant to classification in this group
This subgroup does not cover:

Thermal means inherent in electrothermal relays

Electromagnetic relays (relays using the dynamo-electric effect H01H 53/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Relays using the dynamo-electric effect

Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field {(H01H 51/02 to H01H 51/26 take precedence)}
Special rules of classification within this group

H01H 51/02 to H01H 51/26 take precedence over H01H 51/01.

Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity {(motors with armature moved one way and returned by spring in general H02K 33/02)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Motors with armature moved one way and returned by spring in general

Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement {(motors with armature moved one way and returned by spring in general H02K 33/02)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Motors with armature moved one way and returned by spring in general

Polarised relays {(H01H 51/28 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed

Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed (H01H 51/27 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

Relays with armature having two stable magnetic states and operated by change from one state to the other

Relays having armature, contacts, and operating coil within a sealed casing (H01H 51/27 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

Relays with armature having two stable magnetic states and operated by change from one state to the other

Frequency relays; Mechanically-tuned relays {(switched devices for electric time devices G04C; electromechanical resonaters H03H 9/00; telegraph circuits with oscillating relay H04L 25/205); mechanical means for producing a desired natural frequency of operation of the contacts H01H 50/74}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Switched devices for electric time devices

Electromechanical resonaters

Telegraph circuits with oscillating relay

Mechanical means for producing a desired natural frequency of operation of the contacts

Induction relays, i.e. relays in which the interaction is between a magnetic field and current induced thereby in a conductor {(parts of protective circuit arrangements H02H 1/00)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Parts of protective circuit arrangements

Contacts actuated by an electric motor through fluid-pressure transmission, e.g. using a motor-driven pump {(switches using dynamo-electric motor H01H 3/26)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Switches using dynamo-electric motor

Electrostatic relays; Electro-adhesion relays ({electrostatic measuring instruments G01R 5/28}; clutches in general using the Johnson-Rahbek effect H02N 13/00; {electrostatic transducers H04R 19/00; systems for preventing the formation of electrostatic charges H05F})
Informative references
Attention is drawn to the following places, which may be of interest for search:

Electrostatic measuring instruments

Clutches in general using the Johnson-Rahbek effect

Electrostatic transducers

Systems for preventing the formation of electrostatic charges

Electrothermal relays (thermal switches not operated by electrical input, thermal switches with anticipating electrical input H01H 37/00; thermally-sensitive members H01H 37/32)
References relevant to classification in this group
This group does not cover:

Thermal switches not operated by electrical input, thermal switches with anticipating electrical input

Informative references
Attention is drawn to the following places, which may be of interest for search:

Thermally-sensitive members

Details of electrically-operated selector switches (details of relays H01H 45/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Details of relays

Bases; Cases; Covers; Mountings (racks for mounting selectors with or without other exchange equipment H04Q 1/04); Mounting of fuses on selector switch
Informative references
Attention is drawn to the following places, which may be of interest for search:

Racks for mounting selectors with or without other exchange equipment

Electrically-operated selector switches (details thereof H01H 63/00; selecting in general H04Q)
References relevant to classification in this group
This group does not cover:

Details of electrically-operated selector switches

Informative references
Attention is drawn to the following places, which may be of interest for search:

Selecting in general

Apparatus or processes for the manufacture of emergency protective devices (manufacture of switches in general H01H 11/00; manufacture of relays in general H01H 49/00)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Manufacture of switches in general

Manufacture of relays in general

for calibrating or setting of devices to function under predetermined conditions (measuring electric values G01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Measuring electric values

Means for indicating condition of the switching device {(by means of an auxiliary contact H01H 71/46)}
References relevant to classification in this group
This subgroup does not cover:

Means for indicating condition of the switching device by means of an auxiliary contact

Terminals; Connections (in general H01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Terminals and Connections in general

Electrothermal mechanisms {(combined with a electro-thermal time delay relay H01H 61/002)}
References relevant to classification in this group
This subgroup does not cover:

Electrothermal mechanisms combined with a electro-thermal time delay relay

with bimetal element {(combined with detection of imbalance of two or more currents H01H 83/223)}
References relevant to classification in this group
This subgroup does not cover:

Bimetal elements combined with detection of imbalance of two or more currents

with windings acting in opposition {(H01H 71/2436 takes precedence)}
References relevant to classification in this group
This subgroup does not cover:

Windings acting in opposition

having means for introducing a predetermined time delay (by short-circuited winding H01H 71/30; by additional armature H01H 71/34)
References relevant to classification in this group
This subgroup does not cover:

Short-circuited winding

Additional armature

Plug-in housings {(for a plurality of juxtaposed housings H02B 1/056)}
References relevant to classification in this group
This subgroup does not cover:

Plug-in housings for a plurality of juxtaposed housings

Means for indicating condition of the switch {(by means of an auxiliary contact H01H 71/46)}
References relevant to classification in this group
This subgroup does not cover:

Indicating condition of the switch by means of an auxiliary contact

Means for extinguishing or suppressing arc {(in general H01H 9/30 to H01H 9/46; magnet coil acting as blow-out device H01H 71/38)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Means for extinguishing or suppressing arc in general

Magnet coil acting as blow-out device

Terminals; Connections (in general H01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Terminals and Connections in general

having electrothermal release and no other automatic release (cartridge type H01H 73/62)
References relevant to classification in this group
This subgroup does not cover:

Cartridge type

having electromagnetic release and no other automatic release (cartrigde type H01H 73/64)
References relevant to classification in this group
This subgroup does not cover:

Cartridge type

having both electrothermal and electromagnetic automatic release (cartridge type H01H 73/66)
References relevant to classification in this group
This subgroup does not cover:

Cartridge type

Reset mechanisms for automatically reclosing a limited number of times (circuit arrangements H02H 3/06)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Circuit arrangements

Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting (H01H 73/00, H01H 75/00 take precedence)
References relevant to classification in this group
This group does not cover:

Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism

Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism

with electromagnetic opening {(combined with electromagnetic release mechanism H01H 71/2409)}
References relevant to classification in this group
This subgroup does not cover:

Electromagnetic opening combined with electromagnetic release mechanism

with electrodynamic opening {(combined with electromagnetic release mechanism H01H 71/2418)}
References relevant to classification in this group
This subgroup does not cover:

Electrodynamic opening combined with electromagnetic release mechanism

Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected {(H01H 39/004 takes precedence)}
References relevant to classification in this group
This group does not cover:

Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected

operated by earth fault currents (H01H 83/14 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

Operated by unbalance of two or more currents or voltages, e.g. for differential protection

Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive (switches actuated by melting of fusible material H01H 37/76; automatic release of protective switches due to fusion of a mass H01H 73/00 to H01H 83/00; disposition or arrangement of fuses on boards H02B 1/18)
References relevant to classification in this group
This group does not cover:

Switches actuated by melting of fusible material

Automatic release of protective switches due to fusion of a mass

Informative references
Attention is drawn to the following places, which may be of interest for search:

Disposition or arrangement of fuses on boards

General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified (H01H 85/046 to H01H 85/048 take precedence)
Special rules of classification within this group

H01H 85/046 to H01H 85/048 take precedence over H01H 85/044.

fast or slow type (H01H 85/045 to H01H 85/048 take precedence)
Special rules of classification within this group

H01H 85/045 to H01H 85/048 take precedence over H01H 85/0445.

characterised by the fusible material (H01H 85/11 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

M-effect devices

with constriction for localised fusing (H01H 85/11 takes precedence)
References relevant to classification in this group
This subgroup does not cover:

M-effect devices

Casings (electrical contacts H01H 85/143; fillings H01H 85/18)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Electrical contacts

Fillings

Bases for supporting the fuse; Separate parts thereof (bases, casings for connectors, in general H01R)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Bases, casings for connectors, in general

Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover (interlocking between casing or protective shutter of a switch and mechanism for operating its contacts H01H 9/22)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Interlocking between casing or protective shutter of a switch and mechanism for operating its contacts

Means for extinguishing or suppressing arc (by powder filling H01H 85/18; by mechanical tension applied to fusible member H01H 85/36)
References relevant to classification in this group
This subgroup does not cover:

Means for extinguishing or suppressing arc by powder filling

Means for extinguishing or suppressing arc by mechanical tension applied to fusible member

using an arc-extinguishing liquid (characterised by the composition of the liquid H01H 33/22)
References relevant to classification in this group
This subgroup does not cover:

Arc-extinguishing liquid characterised by the composition of the liquid

using an arc-extinguishing gas (characterised by the composition of the gas H01H 33/22)
References relevant to classification in this group
This subgroup does not cover:

Arc-extinguishing gas characterised by the composition of the gas

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013