Locking device for withdrawable circuit-breakers

Details Locking device for withdrawable circuit-breakers Locking device for withdrawable circuit-breakers

2006-04-04

2006-04-04

Donovan, Lincoln (Department: 2832)

Electricity: circuit makers and breakers

Interlocking

Drawout-type switchgear

C200S050260

Reexamination Certificate

active

07022923

ABSTRACT:
A locking device is for low-voltage circuit-breakers. It can travel into a frame including a lock and a control member to be activated through the lock. The control member interacts with an internal locking slide when a circuit-breaker is moved into the frame, the locking slide being displaceably guided in the circuit-breaker. If the locking device is activated (“locked”), the control member acts on the internal locking slide of the circuit-breaker and ensures that the circuit breaker cannot be switched on. If circuit-breakers with locking slides that can be displaced vertically are used, the control member is situated underneath the circuit-breaker.

REFERENCES:
patent: 4728757 (1988-03-01), Buxton et al.
patent: 6031192 (2000-02-01), Liebetruth
patent: 6479770 (2002-11-01), Dahl et al.
patent: 4333828 (1997-08-01), None
patent: 19641513 (1998-04-01), None
patent: WO 98/13915 (1998-04-01), None
patent: WO 99/65124 (1999-12-01), None
patent: 49843207 (2000-03-01), None
patent: 0685913 (1995-12-01), None
patent: 9956124 (1999-11-01), None
Liebetruth wo98/13915-translated.

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