Honeywell MS8120F1200 Two Position Damper Actuator w/ Spring Return and Aux. Switches for Fire and Smoke, 24v (175 lb-in)
Description
Spring return direct coupled actuators (DCA) for on/off damper control with an integral junction box. The actuator accepts an on/off signal from a single-pole, single-throw (SPST) controller. They are designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350 F.
Features
- 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
- 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
Specifications
- Actuator Type: Damper
- Application Type: Fire and Smoke
- Fail Safe Mode: Spring Return
- Control Signal: SPST, 2 Position
- Supply Voltage: 24 Vac +/- 20%
- Number of Internal Aux. Switches: 2
- Switch Ratings: 250 Vac, 5 A res (3 A ind)
- Shaft Adapter Type: Self Centering clamping
- Manual Operation: Manual Crank
- Mounting: Direct Coupled
- Frequency: 60 Hz, 50 Hz
- Rotational Stroke: 95 ¬+/- 3 degrees
- Rotational Stroke Adjustment: Mechanically limited 5 degree increments
- Spring Return Direction: By orientation
- Timing, Maximum Spring Return (sec): 15 sec
- Timing, Nominal Driving @ 60 Hz (sec): 15 Sec
- Spring Return Direction: By orientation
- Dimensions (in.): 10.67 in high x 3.94 in wide x 2.95 in deep
- Compatible Damper Shafts (in.): 3/8 to 1.06 in. round or 3/8 to 11/16 in. square
- Temperature Range, Ambient (F): -40 F to 130 F
- Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
- Includes: Self-centering shaft adapter, 3mm crank
