Circuit breaker interlock unit to prevent single phasing

Details Circuit breaker interlock unit to prevent single phasing Circuit breaker interlock unit to prevent single phasing

1994-07-11

1996-12-24

Spyrou, Cassandra C.

Electricity: circuit makers and breakers

Interlocking

337 4, 200 5011, H01H 920

Patent

active

055875700

ABSTRACT:
A molded case circuit breaker interlock unit connects between a fuse enclosure attached to one end. Upon the occurrence of a short circuit within a protected circuit, the fuse operates to isolate the protected equipment and is conveniently replaced without disassembling the circuit breaker components. The interlock unit prevents resetting the circuit breaker operating mechanism until the fuse is replaced.

REFERENCES:
patent: 3893052 (1975-07-01), Kotos et al.
patent: 3909762 (1975-09-01), Wilks et al.
patent: 4068283 (1978-01-01), Russel et al.
patent: 4079214 (1978-03-01), Castonguay et al.
patent: 4274121 (1981-06-01), Howell et al.
patent: 5168137 (1992-12-01), Hufnagel et al.

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