Circuit breaker positive off interlock

Details Circuit breaker positive off interlock Circuit breaker positive off interlock

1992-08-21

1994-04-19

Luebke, Renee S.

Electricity: circuit makers and breakers

Toggle mechanisms

200DIG42, H01H 300

Patent

active

053047656

ABSTRACT:
A molded case circuit breaker includes an interlock which prevents the operating handle from being moved from the on position after the main contacts have been welded together. By preventing the operating handle from being moved from the on position during such a condition, the operating handle will indicate the correct status of the main contacts and the operator will be made aware that the main contacts are welded together.

REFERENCES:
patent: 4829147 (1989-05-01), Schiefen et al.

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