Two Position Damper Actuator w/ Spring Return w/ Direct Coupled Actuators (88 lb-in)

MS3110, MS3120, MS4110, MS4120, MS7510, MS7520, MS8110, MS8120 Spring Return Direct Coupled Actuators (DCA) are used within heating, ventilating, and air-conditioning (HVAC) systems. They can drive a variety of quarter-turn, final control elements requiring spring return fail-safe operation. Applications include volume control dampers, mounted directly to the drive shaft or remotely (with the use of accessory hardware), quarter-turn rotary valves, such as ball or butterfly valves mounted directly to the drive shaft and linear stroke globe or cage valves mounted with linkages to provide linear actuation. Features & Benefits: * Brushless DC submotor with electronic stall protection for floating/modulating models * Floating/Modulating models can provide twoposition (SPST) control * Brush DC submotor with electronic stall protection for two-position models * Self-centering shaft adapter (shaft coupling) for wide range of shaft sizes * Access cover to facilitate connectivity * Metal housing with built-in mechanical end limits * Spring return direction field-selectable * Shaft position indicator and scale * Manual winding capability with locking function * Sylk-enabled models available * Certifications: UL (cUL) listed, Plenum-rated per UL2043, CE 89/336/ECC, 73/23/EEC, C-Tick N314