| 摘要 |
The present invention relates to a control and signalling device for a protective switching apparatus of the relay switch type which is provided with power switches (1) and a protection assembly (4) and is capable of detecting faults (overloads or overcurrents) on each current path associated with a switch (1), this device being actuated by a manual control member (51) which can take an operating "run" position corresponding to closed contacts, a "stop" position corresponding to open contacts and a "trip" position corresponding to the position after detection of a fault, characterised by the fact that it comprises a mobile spring loaded cam (52) actuated by a triggering spring (54) and capable of-from the "run" position in which it is locked by an automatic interlock (55) and after the triggering and release of the interlock (55)-of turning the manual control member (51) which then actuates the coil switch (81).
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