Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1990-04-30
1992-12-01
Pellinen, A. D.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
H01H 920
Patent
active
051681374
ABSTRACT:
A manually operable circuit breaker having coupling terminals and a visible isolating gap which can be established only when the protective circuit breaker is open. The isolating gap is provided by an isolating module which is mountable on coupling terminals of the circuit breaker. The isolating module contains a removable isolating unit. The isolating unit can be removed only when the protective circuit breaker is open. In this way, the circuit breaker is provided with a visible isolating gap only when required.
REFERENCES:
patent: 2883491 (1959-04-01), Edmunds
patent: 4786885 (1988-11-01), Morris et al.
patent: 4794356 (1988-12-01), Yu et al.
patent: 4858056 (1989-08-01), Russell
patent: 4884048 (1989-11-01), Castonguay et al.
Hufnagel Friedrich
Weidner Georg
Friedhofer Michael A.
Pellinen A. D.
Siemmens Aktiengesellschaft
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