Cassette type circuit breaker

Details Cassette type circuit breaker Cassette type circuit breaker

1985-04-02

1987-06-09

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

337130, 337137, H01H 6100, H01H 7118

Patent

active

046723510

ABSTRACT:
A base body with a big cavity in its center, a frame body encased in the cavity and retained therein by the ends of the shorter legs of the U-shaped contact plates is disclosed. During an overload condition, overheating causes a spring engaging the clipper plate to expand, which frees the frame body from the shorter legs of the contact plates and the frame body is ejected upward by a coil spring inside the frame body. The frame body is detained in the cavity of base body when freed from the shorter legs of the contact plates by engagement between flanges on frame body and the ends of the longer legs of the U-shaped contact plates, and an LED trouble indicator is used to indicate the overload condition.

REFERENCES:
patent: 3022402 (1962-02-01), Arey

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