HONEYWELL Damper Actuator MS4120A1209/U

Two-position, SPST Actuator – 175 lb-in, Spring Return , 120 Vac +/-10%, 60 Hz

MS4120, MS7520, MS8120 Spring Return Direct Coupled Actuators (DCA) are used within heating, ventilating, and airconditioning (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.
Linear stroke globe or cage valves mounted with linkages to provide linear actuation.

Product Specifications
Dimensions: 9.72 in high x 3.94 in wide x 2.95 in deep
Dimensions: 247 mm high x 100 mm wide x 75 mm deep
Includes: Mounting bracket, self-centering shaft adapter, 3mm crank
Weight: 2.72 kg
Materials: Aluminum housing, Plenum rated plastic access cover
Comments: Integral 1/2 in. NPSM conduit connection.
Mounting: Direct Coupled
Frequency: 50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc. – UL873, Plenum Rated
Electrical Connections: Enclosed screw terminal strip (22 to 14 AWG)
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Supply Voltage: 24 Vac ±20%
Power Consumption:  Driving– 40 VA, Holding– 8 VA
Shipping and Storage Temperature Range (F) – -40 F to +158 F
Shipping and Storage Temperature Range (C): -40 C to +70 C
Approvals, CE: 89/336/ECC, 73/23/EEC
Approvals, Canadian Underwriters Laboratories Inc.: cUL C22.2 No. 24-93
Ambient Temperature Range (C): -40 C to +60 C
Switch Ratings: 250 Vac, 5 A res
Environmental, Electrical or Ingress Protection Rating: NEMA 2
Internal Auxiliary Switch: 2
Actuator Type: Valve; Damper
Control Signal: Two position; SPST
Fail Safe Mode: Spring Return
Torque Rating (Nm): 20 Nm
Spring Return Torque/Force (lb-in., lbf): 175 lb-in.
Spring Return Torque/Force (Nm, N): 20 Nm
External Auxiliary Switches Available: Yes, SW2-US
Shaft Adapter Type: Self-centering clamping
Manual operation: Manual crank
Shaft Dimensions (mm): 10 to 27 mm round or 10 to 18 mm square
Spring Return Direction: By orientation