What is the difference between an electrical and a mechanical damper?
Electrical dampers have an actuator that operates the damper. The actuator is under constant power and holds the damper in the open position under normal conditions. In the event of a fire, power is cut and the damper closes. A mechanical damper is a sedentary damper that requires no electrical power. The damper simply has a fusible link that keeps it open during normal conditions.
