Manually operable circuit breaker
AssigneeSiemmens Aktiengesellschaft
InventorsFriedrich Hufnagel, Georg Weidner
Life of this patent
Estimating the term…
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.
Claims20
An apparatus to provide a manually operable circuit breaker with a visible isolating gap comprising:
- a) a manually operable circuit breaker with connecting terminals, said breaker having open and closed states;
- b) an isolating module including a base portion and a removable isolating unit, said base portion having extensions connected to said connecting terminals;
- and
- c) means for:
- i) preventing removal of said removable isolating unit when said circuit breaker is closed;
- and
- ii) preventing access to at lest one of said connecting terminals to which one of said base portion extensions is connected when said circuit breaker is closed.
An apparatus to provide a manually operable circuit breaker with a visible isolating gap comprising:
- a) a manually operable circuit breaker with connecting terminals, said breaker having open and closed states;
- b) an isolating module including a base portion and a removable grounding unit, said base portion having extensions connected to said connecting terminals;
- and
- c) means for:
- i) preventing removal of said removable grounding unit when said circuit breaker is closed;
- and
- ii) preventing access to at lest one of said connecting terminals to which one of said base portion extensions is connected when said circuit breaker is closed.
Dependencies are inferred from the claim text.