On-Line Catalog : Actuators > Electric - 2-position / spring return > 120 vac > MS4120
Model MS4120 2-position spring return 120 vac
Application
The MS4120 spring-return actuator is intended for the operation of smoke and fire/smoke dampers used in HVAC systems. The actuator will meet the requirements of UL 555 and UL 555S when assembled on a UL listed/labeled damper for this application.Documents
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