Product Details
- Voltage24 v
Description
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.
Brushless DC sub-motor 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. 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.