Locking apparatus for a drawer type circuit breaker

Details Locking apparatus for a drawer type circuit breaker Locking apparatus for a drawer type circuit breaker

1991-06-20

1993-04-27

Scott, J. R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

361336, 361338, 361345, H01H 920, H02B 1100

Patent

active

052064689

ABSTRACT:
A locking apparatus for a drawer type circuit breaker that restricts movement from the test/disconnection position to the operation position on a switchboard. The locking apparatus has a connection sensor for detecting the connection of a switchboard side plug into a drawer type circuit breaker plug. A switchboard-mounted stopper contacts a lock pin mounted to the drawer type circuit breaker when the connection sensor fails to detect a connection between the plugs. The drawer-type circuit breaker has a mounted lock lever for securing the plugs together. The locking apparatus also has an access-inhibiting plate for preventing operator access to the plugs when the circuit breaker is between the test/disconnection position and the operation position.

REFERENCES:
patent: 3560676 (1971-02-01), Battaglia
patent: 4743715 (1988-05-01), Gerbert-Gaillard et al.
patent: 4754367 (1988-06-01), Bohnen
patent: 4761521 (1988-08-01), Beck et al.

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