US 11,721,478 B2
Residual current device with electromagnetic shielding structure
Wei-Hsun Lai, Taoyuan (TW); and You-Jhih Jheng, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Jan. 26, 2021, as Appl. No. 17/158,829.
Claims priority of application No. 202022209764.5 (CN), filed on Sep. 30, 2020.
Prior Publication US 2022/0102067 A1, Mar. 31, 2022
Int. Cl. H02H 3/00 (2006.01); H01F 27/36 (2006.01); H02H 1/00 (2006.01); H01F 27/29 (2006.01); H01F 27/26 (2006.01)
CPC H01F 27/363 (2020.08) [H01F 27/29 (2013.01); H02H 1/0007 (2013.01); H01F 27/266 (2013.01); H01F 2027/297 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A residual current device with electromagnetic shielding structure, the residual current device comprising:
an insulating housing comprising a base and a lid covering the base;
an electromagnetic induction module disposed in one side of the base, said electromagnetic induction module comprising a core base and an iron core disposed in the core base;
a leakage current detecting module disposed in another side of the base, said leakage current detecting module comprising a circuit board assembly, a detecting circuit disposed on the circuit board assembly and a lead frame electrically connected to the circuit board assembly; and
an electromagnetic shielding structure comprising a metal shielding body, said electromagnetic shielding structure accommodated in the base to cover the leakage current detecting module.