Static trip unit for molded case circuit breakers

Details Static trip unit for molded case circuit breakers Static trip unit for molded case circuit breakers

1980-03-14

1981-07-28

Tolin, Gerald P.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

361357, 361393, 335 18, H02B 118

Patent

active

042813590

ABSTRACT:
A static trip unit is comprised of a current transformer module and an electronic programmer module physically and electrically mated together for incorporation in a molded case industrial circuit breaker. Current transformer modules and programmer modules are separately interchangeable to change breaker current ratings and functional capabilities. A trip interlock is included to prevent breaker closure in the absence of either the trip unit or the trip solenoid.

REFERENCES:
patent: 3053954 (1962-09-01), Jencks
patent: 3832603 (1974-08-01), Cray
patent: 3950677 (1976-04-01), Klein
patent: 4037183 (1977-07-01), Gaskill

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