To provide a compact switch for a withstand voltage test of an earth leakage breaker additionally installable in a limited space in a breaker body case without changing the layout of main components.
This manual operation type switch 11 for a withstand voltage test which is structured to disconnect an earth leakage detection circuit from a main circuit in executing an insulation/withstand voltage test of an earth leakage breaker is formed with an assembly comprising: a switch case 13 made of an insulating material; a fixed electrode holder 15 with two pieces of fixed electrodes 14 held thereto; a bridging type moving contact 16 formed of a reversed V-shaped spring piece; a moving contact holder 17 collectively holding moving contacts of respective poles and vertically slidably housing them in a body case; and an operation part 17a extracted upward from the switch case by continuing it to the contact holder. A knob arranged at a tip of the operation part is faced to a window hole opened in a cover of the breaker body case, and the switch for a withstand voltage test is turned on/off by manual pushing/pulling operations from the outside of the case.
ASAKAWA KOJI
TAKAHASHI YASUHIRO
JP2005026105A | 2005-01-27 | |||
JPH10199366A | 1998-07-31 | |||
JPH07161280A | 1995-06-23 |