Circuit breaker combination thermal and magnetic trip actuator

H - Electricity – 01 – H

Patent

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Details

H01H 71/40 (2006.01) H01H 71/74 (2006.01) H01H 71/16 (2006.01)

Patent

CA 2225010

A trip mechanism (140), including two trip actuators, namely a bi-metal trip actuator (144) and a magnetic trip actuator (142), that act on a plunger (160). A plunger guide (162) guides motion of the plunger along a straight line path of travel. Each trip actuator is capable of moving the plunger independently of the other trip actuator to cause the circuit breaker to trip in response to detection of either a thermal fault or a magnetic fault.

Cette invention concerne un mécanisme déclencheur (140) de disjoncteur à deux organes de déclenchement, c'est-à-dire un organe bi-métallique (114) et un organe magnétique (142) agissant tous deux sur le même piston plongeur (160). Un guide-piston (162) assure le déplacement en ligne droite du piston-plongeur. L'un et l'autre des deux organes de déclenchement peuvent causer indépendamment l'un de l'autre le déplacement du piston pour entraîner le déclenchement du disjoncteur à la détection d'un défaut thermique ou d'origine magnétique.

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