Interchangeable solid state and thermal-magnetic trip units

Details Interchangeable solid state and thermal-magnetic trip units Interchangeable solid state and thermal-magnetic trip units

1976-04-12

1977-12-20

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 21, 335132, 361115, H01H 7500, H01H 7700

Patent

active

040644693

ABSTRACT:
A removable and replaceable solid state trip unit assembly for automatically opening a molded case multi-pole circuit breaker, is constructed so as to be interchangeable with a thermal-magnetic trip unit assembly.

REFERENCES:
patent: 3636410 (1972-01-01), Pardini
patent: 3761778 (1973-09-01), Willard
patent: 3826951 (1974-07-01), Mater et al.
patent: 4000478 (1976-12-01), Jencks et al.

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