| 摘要 |
PROBLEM TO BE SOLVED: To provide a switch mechanism comprising a trip indicator mechanism for a breaker etc. SOLUTION: This switch mechanism has a rocker which can move freely among a switch contact, a first position where the switch contact is closed, a second position where the switch contact is opened and which indicates that an electrical fault has occurred and a third position where the switch mechanism is reset and the switch contact is opened. The rocker preferably comprises two rocker members which are hinged to each other, and one rocker member has a step formation part between a front surface and an end surface.The step formation part is provided with an instruction with respect to the reset of the mechanism and practically placed on the same plane with a front panel of a breaker housing when the rocker is in the second position, and the surface of the first rocker member is partially projected from the front panel. By this mechanism, a user can distinguish that the breaker is brought into an-off state manually and that the breaker has been tripped by a fault. COPYRIGHT: (C)2006,JPO&NCIPI
|
