Schneider Electric Sa

Telemecanioue

Jean Abot

Nicolas Hertzog

Michel Ledroit

Alain Gousset

Christian Lange

A circuit for the protected alternating current power supply of an electrical load, the circuit including, in series, a protective circuit breaker and a bi-directional electronic switch in parallel to which a shunt contactor is connected. An electrical component is connected in series and upstream from the shunt contactor. The electrical component is intended to establish a continuous voltage (V) at the terminals of the electronic switch and its impedance is chosen in such a way that the electronic switch to which command pulses are sent periodically, is made a conductor, when an overload current appears in the circuit and when the contactor is closed.

Circuit for the protected power supply of an electrical load

An electrical device for switching an arc to a path parallel to a device to be protected. The electrical device includes double breaking contacts and an arc transfer electrode associated with the parallel path. The parallel path shunts the double breaking contacts and a device to be protected via the arc transfer electrode. The arc transfer electrode is placed in the vicinity of a fixed contact of the double breaking contacts.

Electric device having separable contacts with arc switching

Switch device comprising a monostable auxiliary switch coupled to a main

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L'Isle Adam, France

Jean Abot