Two Position Damper Actuator w/ CW Spring Return for Fire and Smoke Applications (80 lb-in)

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

• Integral spring return ensures level of return torque.
• Fifteen-second spring return timing.
• No special cycling required during long-term holding.
• No audible noise during holding.
• Patent pending design eliminates need for limit switches to reduce power consumption.
• Models available for 24, 120, and 230 Vac.
• 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.
• Integral junction box with three conduit openings eliminates need for separate wiring box.
• High-temperature indicator included.

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: CW
• 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): 0 F to 130 F
• Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
• Includes: Self-centering shaft adapter, 3mm crank