Circuit breaker

Details Circuit breaker Circuit breaker

H - Electricity

01

H

H01H 73/00 (2006.01) H01H 83/20 (2006.01) H02H 3/00 (2006.01) H01H 71/10 (2006.01) H01H 83/04 (2006.01)

Patent

CA 2053238

2053238 9113454 PCTABS00007 A residuel current circuit breaker (1) has a partition wall (3) which separates an over-current protection device (4) from a residual current detection circuit (5). A plunger rod (24) extends through a bore (23) in the armature (21) of a coil (20) and is moved independently through the coil (20) to trip the breaker if a residual current is detected by the circuit (5). The plunger rod (24) is moved by a drive rod (31), the operation of which is controlled by a permanent magnet (35) which retains the drive rod (31) retracted and an electromagnet (30) which allows the drive rod (31) to drive forwardly under the action of a spring (32) in the event of a residual current being detected. The plunger rod (30) is reset by a reset lever (40) which is moved when an operating handle (18) of the breaker moves from a non-tripped to a tripped position on tripping of the breaker.

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