2-position or SPST Spring Return 44 lb-in., 5 Nm, Direct Coupled Actuator

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.

Models available with three-foot, 18 AWG color-coded cable.

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.

Specifications:

Torque/Force (Nm, N): 5 Nm

Number of Internal Auxiliary Switch: 1

Type of Internal Auxiliary Switch: Adjustable 0-95 degrees

Switch Ratings: 250 Vac, 8 A res (5 A ind)

External Auxiliary Switches Available No

Shaft Adapter Type: Self-centering clamping

Manual operation: N/A

Spring Return Torque/Force (lb-in., lbf): 44 lb-in.

Spring Return Torque/Force (Nm, N): 5 Nm

Maximum Stall Torque/Force (lb-in., lbf): 105 lb-in.

Maximum Stall Torque/Force (Nm, N): 12 Nm

Mounting: Direct Coupled

Rotational Stroke: 95 ±3 degrees

Rotational Stroke Adjustment: Mechanically limited 5 degree increments

Rotation to Open: By switch

Spring Return Direction: By orientation

Timing, Maximum Spring Return (sec): 25 seconds

Timing, Nominal Driving @ 60 Hz (sec): 45 seconds

Power Consumption (Driving): 6/9 VA

Electrical Connections: Enclosed screw terminal strip (22 to 14 AWG)

Maximum Noise Rating, Driving (dB(A) @ 1m): 50

Maximum Noise Rating, Holding (dB(A) @ 1m): 20 (no audible noise)

Includes: Mounting bracket, self-centering shaft adapter