Molded case circuit breaker operating handle guard

Details Molded case circuit breaker operating handle guard Molded case circuit breaker operating handle guard

1990-11-05

1991-10-22

Tolin, Gerald P.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

200 4319, 200321, 335 6, 361357, 361376, H01H 928

Patent

active

050601075

ABSTRACT:
A molded case circuit breaker with a visual access slot next to the circuit breaker operating handle allows the conditions of the circuit breaker contacts to be visually ascertained. To prevent inadvertent displacement of the circuit breaker operating handle when the circuit breaker is connected within an electrical distribution circuit, a handle guard is positioned over the circuit breaker operating handle. The handle guard is arranged such that the circuit breaker operating handle is free to reciprocate between the ON, OFF and TRIPPED positions while the operating handle guard is in position.

REFERENCES:
patent: 4300030 (1981-11-01), Dimarco et al.
patent: 4589052 (1986-05-01), Dougherty
patent: 4728914 (1988-03-01), Morris et al.
patent: 4736174 (1988-04-01), Castonguay et al.
patent: 4794356 (1988-12-01), Yu et al.
patent: 4796154 (1989-01-01), Morris et al.
patent: 4806893 (1989-02-01), Castonguay et al.

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