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 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


Specs

Product Type:

Actuator

Actuator Type:

Two Position

Application:

Fire and Smoke

Voltage:

24v

Torque:

175 lb-in

Features:

Internal Aux Switch

NEMA 2

Fail Safe Mode:

Spring Return

Operating Temp Range:

-40°F to 130°F

 

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