Floating (0)2-10 Vdc Spring Return 27 lb-in. 3 Nm Direct Coupled Actuator

The MS7503 is a 27 lb-in (3Nm), spring return direct-coupled, line voltage actuator that accepts on/off (SPDT) or modulating (0/2-10 Vdc) control for: air dampers, air handlers, ventilation flaps, louvers, and ball valves.

Features:

Brushless DC submotor with electronic stall protection on all models

Self-centering shaft adaptor (shaft coupling) for wide range of shaft sizes

Models available for use with two-position, SPST, line- (Series 40) or low- (Series 80) voltage controls

Models available for use with floating or switched SPDT (Series 60) controls

Models available for use with proportional current or voltage (Series 70) controls

Models available with combined floating and modulating control in a single device

Models available with an internal end switch

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

Access cover to facilitate connectivity

Durable plastic housing with built-in mechanical end limits

Spring return direction field selectable

Shaft position indicator and scale

UL (cUL) listed and CE compliant

All models are plenum rated per UL873

Specifications:

Torque/Force (lb-in., lbf): 27 lb-in.

Torque/Force (Nm, N): 3 Nm

Fail Safe Mode: Spring Return

Control Signal: Floating

Control Signal: SPDT

Control Signal: On/Off

Control Signal: (0)2-10 Vdc (4-20 mA w/500 ohm resistor)

Supply Voltage: 24 Vac/dc

Number of Internal Auxiliary Switch: 0

External Auxiliary Switches Available: No

Shaft Adapter Type: Self-centering clamping

Feedback: (0)2-10 Vdc

Manual operation: N/A

Spring Return Torque/Force (lb-in., lbf): 27 lb-in

Spring Return Torque/Force (Nm, N): 3 Nm

Maximum Stall Torque/Force (lb-in., lbf): 70 lb-in.

Maximum Stall Torque/Force (Nm, N): 8 Nm

Mounting: Direct Coupled

Rotational Stroke: 95 ±3 Degrees

Rotational Stroke Adjustment: Mechanically limited 5 ° increments

Rotation to Open: By switch

Spring Return Direction: By orientation

Timing, Maximum Spring Return (sec): 25 sec

Timing, Nominal Driving @ 60 Hz (sec): 90 sec

Dimensions (in.): 6-81/54 high x 3-55/84 wide x 3-5/32 deep

Compatible Damper Shafts (in.): 3/8" to 5/8" round or 1/4" to 1/2" square

Materials: Plenum rated plastic housing

Power Consumption (Driving): 6/3 VA

Input Impedance: Min. 95 k Ohm

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

Maximum Noise Rating, Driving (dB(A) @ 1m): 40

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

Environmental Rating: NEMA2

Ingress Protection Rating: IP54

Includes: Mounting bracket, self-centering shaft adapter