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| Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
| You are viewing a USPC Schedule. |
| Class 337 | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
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![]() | ![]() | 1 | WITH DIVERSE ART-TYPE DEVICE |
![]() | ![]() | 2 | WITH SEPARATE DISTINCT DIVERSE ART-TYPE SWITCHING DEVICE (E.G., FLUID- OR MECHANICAL-ACTUATED) |
![]() | ![]() | 3 | Bimetallic device with other |
![]() | ![]() | 4 | Fusible element device with other |
![]() | ![]() | 12 | WITH DIVERSE ART-TYPE ACTUATOR FOR SINGLE SWITCH |
![]() | ![]() | 14 | ELECTROTHERMALLY ACTUATED SWITCHES |
![]() | ![]() | 15 | Shunt or short circuit completion devices |
![]() | ![]() | 16 | Bimetallic means |
![]() | ![]() | 17 | Fusible material combined with gap |
![]() | ![]() | 19 | Gap with thin film dielectric (e.g., voltage-responsive) |
![]() | ![]() | 20 | With significant housing or casing structure |
![]() | ![]() | 21 | Conductive fluid devices |
![]() | ![]() | 22 | Fluorescent lamp-starting devices |
![]() | ![]() | 23 | With significant heating means |
![]() | ![]() | 25 | Electric discharge means (e.g., electron-emissive) |
![]() | ![]() | 26 | With significant contact structure or composition |
![]() | ![]() | 28 | Space discharge device (gaps, lightning arrester, etc.) |
![]() | ![]() | 29 | Plural |
![]() | ![]() | 30 | With explosive or combustible material |
![]() | ![]() | 31 | With fusible element (e.g., cutout means) |
![]() | ![]() | 32 | With grounding means |
![]() | ![]() | 33 | With common structural elements (e.g., fuse provides support or element of spark gap structure) |
![]() | ![]() | 34 | Housing, casing, mounting or support means |
![]() | ![]() | 35 | Plural diverse similar art-type devices in single switch |
![]() | ![]() | 36 | With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) |
![]() | ![]() | 37 | With manual or other mechanical contact controlling means |
![]() | ![]() | 38 | Plural elements combined with single mechanical means |
![]() | ![]() | 39 | Independently operative bimetallic elements |
![]() | ![]() | 40 | Individually responsive to diverse conditions or diverse characteristics |
![]() | ![]() | 41 | Multiple contact or plural circuit control means |
![]() | ![]() | 42 | Plural switches |
![]() | ![]() | 44 | Selectively or alternately actuated |
![]() | ![]() | 45 | Single multipole or polyphase control device |
![]() | ![]() | 51 | Cyclically or periodically actuated |
![]() | ![]() | 52 | With spring or other energy storage device |
![]() | ![]() | 53 | Snap-action |
![]() | ![]() | 54 | With magnetic flux source (e.g., magnetic armature) |
![]() | ![]() | 55 | With latching or holding means |
![]() | ![]() | 56 | With reclosing or reset means |
![]() | ![]() | 57 | With adjusting or calibration means |
![]() | ![]() | 58 | Compound motion means |
![]() | ![]() | 61 | Rotary or oscillatory motion device (e.g., spring motor) |
![]() | ![]() | 62 | Reciprocating or slidable motion device |
![]() | ![]() | 67 | With contact pressure maintaining or adjusting means |
![]() | ![]() | 68 | With direct contact separating means (e.g., plunger camming means) |
![]() | ![]() | 69 | Independently operative (nontrip-free) |
![]() | ![]() | 70 | Latch or latch-release means |
![]() | ![]() | 71 | Plural or responsive to diverse effects |
![]() | ![]() | 72 | With reclosing or reset means |
![]() | ![]() | 74 | Trip-free |
![]() | ![]() | 75 | Bimetallic element unitary with or comprising latch means |
![]() | ![]() | 76 | Performs dual functions (e.g., main contact) |
![]() | ![]() | 77 | With external or auxiliary heater |
![]() | ![]() | 78 | Utilizing plural bimetallic elements |
![]() | ![]() | 79 | With signal or indicating means |
![]() | ![]() | 80 | With mercury or other conductive liquid circuit completion means |
![]() | ![]() | 81 | Retarded or delayed action type |
![]() | ![]() | 82 | With operating range calibration or adjustment means |
![]() | ![]() | 85 | Bimetallic element unitary with or directly actuates movable contact means |
![]() | ![]() | 86 | Plural contacts or external circuit connection means |
![]() | ![]() | 88 | Retarded or delayed type |
![]() | ![]() | 89 | Snap-action |
![]() | ![]() | 92 | Cyclic or repetitively operative (e.g., flashing) |
![]() | ![]() | 94 | With operating range, calibration or adjusting means |
![]() | ![]() | 95 | With plural or combined elements |
![]() | ![]() | 97 | With switch structure protective means |
![]() | ![]() | 98 | With contact operation inhibiting means (e.g., meltable or magnetic) |
![]() | ![]() | 99 | With voltage or ambient temperature compensation means |
![]() | ![]() | 102 | With external or auxiliary heating means |
![]() | ![]() | 103 | With heater-adjusting, shunting or short-circuiting means |
![]() | ![]() | 104 | Plural heating means |
![]() | ![]() | 105 | With electrical power supply or current control means |
![]() | ![]() | 107 | Significant heating element structure or composition |
![]() | ![]() | 109 | Contact composition or structure |
![]() | ![]() | 110 | With arc-suppression or blowout means |
![]() | ![]() | 111 | Bimetallic structure or composition of material |
![]() | ![]() | 112 | Housing, casing or support means |
![]() | ![]() | 114 | Expansible or vaporizable fluid-actuated (e.g., mercury vapor) |