Honeywell MS4620F1203 Two Position Damper Actuator w/ Spring Return and aux. switches for Fire and Smoke Applications (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
- 175 lb-in. (20 Nm) minimum driving torque at 350F (176C).
- Integral stainless steel spring return ensures level of return torque.
- Reversible mounting allows actuator to be used for either clockwise (cw) or counterclockwise (ccw) spring rotation.
- Fifteen-second spring return timing.
- No special cycling required during long-term holding.
- No audible noise during holding.
- Patented design eliminates need for limit switches and reduces power consumption.
- Models available with integral high temperature (350 F) SPST position-indicating switches (<7 degrees, >85 degrees).
- High temperature Teflon lead wires.
- Ninety-five degree angle of rotation for tight damper closure.
- Actuator holds rated torque at reduced power level.
- Die-cast aluminum housing. Housing design allows flush mounting to damper.
- High-temperature indicator included.
- Self-centering shaft adapter (SCSA), patented.
Specifications
- Actuator Type: Damper, Valve
- Application Type: Fire and Smoke
- Fail Safe Mode: Spring Return
- Control Signal: 2 position, SPST
- Supply Voltage: 100 to 250 Vac
- Number of Internal Auxiliary Switch: 2
- External Auxiliary Switches Available: Yes, SW2-US
- 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.): 9.72 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
