This bolt is locked without voltage, the locking is made by an incorporated spring. With an electrical signal the bolt turns to unlocked.
The key has two positions, in the locked position the key cannot be removed. To remove it, it is necessary to unlock the bolt.
The number of microswitches and its operation mode (normally open, closed or combined) depend on the application required.
Applications: it is designed to protect properly from electrical accidents, it is assembled inside the front of the high, medium and low voltage electrical equipment and for all those applications where an electrical signal needs to be sent or turn off by a combined security activation (thumb switch/ key turn)