Spring-operated "separate function" control mechanism, used in cut-off fire dampers – current break control
The only difference is to use an electromagnetic release device without a permanent magnet instead of an electromagnetic release with a permanent magnet. This electromagnet to produce the field …
In case of, when moving to the safety position, it is initiated by an electromagnetic release that releases the bolt of the damper spring drive, and transition to the standby position is ensured by an independently powered electromechanical rotary actuator, we say, that it is a "separated function" control mechanism solution for safety from …