Electrical circuit breakers

Details Electrical circuit breakers Electrical circuit breakers

1974-09-12

1976-03-09

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

74553, 200336, 335 45, 337 82, H01H 7116

Patent

active

039434770

ABSTRACT:
An electrical circuit breaker having a thermal element which on being heated by fault current trips the breaker, and including an adjustable member to vary the action of the thermal element thereby to vary the rating of the breaker, said adjustable member comprising a slide displaceable by an eccentric boss rotatable by means of an external knob.

REFERENCES:
patent: 3084236 (1963-04-01), Klein et al.
patent: 3142187 (1964-07-01), Kane et al.
patent: 3211861 (1965-10-01), Freese
patent: 3226510 (1965-12-01), Thomas et al.
patent: 3708771 (1973-01-01), Schreckenberg et al.
patent: 3775713 (1973-11-01), Walker et al.

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