Molded case circuit breaker with interchangeable trip circuits

Details Molded case circuit breaker with interchangeable trip circuits Molded case circuit breaker with interchangeable trip circuits

1992-06-29

1993-06-08

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335202, H01H 7300

Patent

active

052183319

ABSTRACT:
An industrial-rated circuit breaker cover is adapted for optimally receiving an advanced electronic trip unit including a keypad and display unit as well as a basic electronic trip unit providing circuit interruption facility without the keypad and display unit. The load terminals electrically connect the current sensing transformers with the external power circuit and receive the same size lugs that connect the circuit breaker with the electrical power distribution circuits.

REFERENCES:
patent: 3636482 (1972-01-01), Edmunds
patent: 3784940 (1974-01-01), Detorre
patent: 3958197 (1976-05-01), Gryctko
patent: 4000444 (1976-12-01), Douglas et al.
patent: 4686600 (1987-08-01), Morris et al.

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