The Electronic Fusible Link (EFL) is a heat responsive device used with the Siemens OpenAir™ UL listed fire and smoke control damper actuator.
Upon exceeding the temperature limits of the EFL model ordered and installed, the EFL cuts power to the electronic damper actuator and the actuator’s spring return mechanism closes the damper.
NOTE: The EFL must be factory-installed. The UL rating carried by the specific damper and actuator is assigned as an assembly and cannot be added in the field.
Replacement EFLs may be field-installed with local authority approval.
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