Two Position Damper Actuator w/ Spring Return (44 lb-in)

The MS4105 is a 44 lb-in (5Nm), spring return direct-coupled, line voltage actuator that accepts two position (SPST) control for use 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.

Features:

• Brushless DC submotor with electronic stall protection for floating/modulating models.
• Brush DC submotor with electronic stall protection for 2-position models.
• Self-centering shaft adapter (shaft coupling) for wide range of shaft sizes.
• Models available for use with two-position, single pole single throw (spst), line- (Series 40) or low- (Series 80) voltage controls.
• Models available for use with floating or switched single-pole, double-throw (spdt) (Series 60) controls.
• Models available for use with proportional current or voltage (Series 70) controls.
• Models available with combined floating/modulating control in a single device.
• 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.
• UL (cUL) listed and CE compliant.
• All models are plenum-rated per UL873.