Direct Coupled Damper Actuator—Spring Return
S20 Series: MS4120; MS7520; MS8120
Spring Return Direct Coupled Actuator, 175 lb-in
Actuator Type: Damper; Valve Rotational Stroke: 95 ±3 degrees Fail Safe Mode: Spring Return
Torque Rating: 175 lb-in. (20 Nm)
Spring Return Torque: 175 lb-in. (20 Nm) Spring Return Direction: By orientation
Dimensions, Approximate: 9.72 in high x 3.94 in wide x 2.95 in deep (247 mm high x 100 mm wide x 75 mm deep)
External Auxiliary Switches Available: Yes, SW2-US
Electrical Connections: Enclosed screw terminal strip (22 to 14 AWG)
Environmental Rating: NEMA2 Frequency: 50 Hz; 60 Hz Manual operation: Manual crank
Mounting: Direct Coupled
Maximum Noise Rating, Holding (dBA @ 1m): 20 (no aud ble noise) Maximum Noise Rating, Driving (dBA @ 1m): 40
Rotational Stroke Adjustment: Mechanically limited 5 degree increments
MS4120, MS7520, MS8120 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.
•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 adjustable zero and span.
•Models available with line-voltage internal end switches.
•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.
Compatible Damper Shafts: 3/8 to 1.06 in. round or 3/8 to 11/16 in. square (10 to 27 mm round or 10 to 18 mm square)
Shaft Adapter Type: Self-centering clamping
Supply Voltage: 100 to 250 Vac
Materials: Aluminum housing, Plenum rated plastic access cover
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing Ambient Temperature Range: -40 F to +140 F (-40 C to +60 C) Storage Temperature Range: -40 F to +158 F (-40 C to +70 C)
Weight: 7.4 lb (3.36 kg)
Includes: Mounting bracket, self-centering shaft adapter, 3mm crank Comments: Integral 1/2 in. NPSM conduit connection
Approvals
CE: 89/336/ECC, 73/23/EEC
C-Tick: N314
Underwriters Laboratories, Inc: UL873, Plenum Rated Canadian Underwriters Laboratories, Inc: cUL C22.2 No. 24-93
<![endif]>Commercial
<![if ! IE]><![endif]>Components
70-6910 |
|
|
|
385 |
|
|
Loading...