Description

MS4103, MS7403, MS7503, and MS8103 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.

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
  • 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): 44 lb-in.
  • Torque/Force (Nm, N): 5 Nm
  • Fail Safe Mode: Spring Return
  • Control Signal: Floating
  • Control Signal: (0)2-10 Vdc (4-20 mA w/500 ohm resistor)
  • Supply Voltage: 24 Vac/dc
  • 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
  • Feedback: (0)2-10 Vdc
  • 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
  • Frequency: 50, 60 Hz
  • 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 sec
  • Timing, Nominal Driving @ 60 Hz (sec):90 sec
  • Compatible Damper Shafts (in.): 3/8 to 5/8 in. round or 1/4 to 1/2 in. square
  • Compatible Damper Shafts (mm): 9 to 16 mm round or 6 to 13 mm square
  • Materials: Plenum rated plastic housing
  • Power Consumption (Driving): 8 VA
  • Input Impedance: Min. 95 kOhm
  • Electrical Connections: Enclosed screw terminal strip (22 to 14 AWG)
  • Temperature Range, Ambient (F): .-40 F to +149F
  • Temperature Range, Storage (F): .-40 F to +150F
  • Temperature Ratings (Shipping)(F): .-40 F to +150F
  • Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
  • 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

Specs

Product Type:

Actuator

Actuator Type:

Proportional

Floating

Two Position

Voltage:

24v

Hertz:

50

60

Torque:

44 lb-in

Height:

7-1/2″

Fail Safe Mode:

Spring Return

Depth (Inches):

3-5/32″

Width:

3-55/84″

Features:

NEMA 2

 

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