Circuit breaker with solid state passive overcurrent sensing dev

Details Circuit breaker with solid state passive overcurrent sensing dev Circuit breaker with solid state passive overcurrent sensing dev

1974-12-10

1977-04-19

Broome, Harold

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

337 35, H02H 504, H01H 3900

Patent

active

040190978

ABSTRACT:
A circuit breaker including a flux transfer trip mechanism and a solid state passive overcurrent sensing device having a temperature-dependent switching resistor of resistance material such as vanadium dioxide or lanthanum cobalt oxide.

REFERENCES:
patent: 1210058 (1961-12-01), Fortescue
patent: 1225388 (1917-05-01), Woodbridge
patent: 3156849 (1964-11-01), Epstein
patent: 3287680 (1966-11-01), Houpt et al.
patent: 3543104 (1970-11-01), Umeda
patent: 3745369 (1973-07-01), Yamagata
patent: 3857068 (1974-12-01), Braunstein

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