Two Position Damper Actuator w/ Spring Return for Fire and Smoke, 24v (175 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

• 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%
• 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