Residential circuit breaker with arcing fault detection

Details Residential circuit breaker with arcing fault detection Residential circuit breaker with arcing fault detection

1996-10-04

1998-01-06

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361102, 361105, 335 23, 335201, H02H 300

Patent

active

057061548

ABSTRACT:
A circuit breaker thermal-magnetic trip unit for arcing fault detection includes a current transformer having a gapped magnetic core arranged around the load side of the trip unit. The bimetal within the trip unit is positioned abutment with the gap in the transformer core to thereby heat the bimetal causing the bimetal to trip and separate the circuit breaker contacts.

REFERENCES:
patent: 4513268 (1985-04-01), Seymour et al.
patent: 5307230 (1994-04-01), MacKenzie
patent: 5452223 (1995-09-01), Zuercher et al.
patent: 5510946 (1996-04-01), Franklin
patent: 5519561 (1996-05-01), Mrenna et al.
patent: 5583732 (1996-12-01), Seymour et al.

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