| 摘要 |
The auxiliary switching device, with an electromagnetic undervoltage release and an auxiliary switch with a bridge slider carrying a movable contact cooperating with stationary contacts, uses a two-armed coupling lever for switching in the auxiliary switch and subsequent release of the undervoltage release. One arm of the coupling lever cooperates with the switch slider and the other cooperates with the bias spring (31) acting on the pivot armature (59) of the undervoltage release so that the rotation of the coupling lever about its axis causes closure of the auxiliary switch contacts and the release of the pivot armature.
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