| 摘要 |
A circuit breaker comprises a circuit interrupter connected between two external terminals, a bistable magnetic actuator, having a permanent magnet for maintaining its state, connected via a mechanical linkage to operate the circuit interrupter, a capacitative charge store connected to power the actuator, means for recharging the charge store, and electronic control means connected to control the operation of the actuator in response to the current flowing between the terminals, at least the actuator, the charge store and the control means being housed in a common housing. A bistable magnetic actuator with an axially polarised magnet carried by the armature comprises two lnterlinked magnetic yokes, outer limbs of which constitute magnetic pole pieces, and inner limbs of which are mechanically connected. |
