| 摘要 |
The present invention refers to a control and signal device for a protection commutator of the type comprising an electromagnetic switch having power switches and a protection assembly, and which can detect failures (overcharges or overcurrent) in every current paths associated with a switch. This device is actuated by a manual control means which can assume an "operation" position corresponding to the closed contacts, a "stop" position corresponding to the open contacts, and a "break shooting" position which corresponds to that position after a failure has been detected. The device is characterized in that it comprises a mobile spring pawl actuated by a shooting spring, which can rotate the manual control means from the interlocking automatic position and after shooting and releasing the interlocking device, thereby subsequently actuating the coil switch.
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