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CM Series (18 in-lb)
Damp.Rotary, 18in-lb, On/Off/Float, 24V
Unit of Measure


Product Type

N/A Damper Actuator

Actuator Type

N/A Non-Spring Return

Object name

N/A CMB24-3


N/A CMB24-3

Application Type

N/A Air


N/A Non-Spring


N/A minimum 18 in·lbminimum 2 N·m

Control Type

N/A On/Off, Floating Point

Control Input

N/A On/Off, Floating Point

Input Impedance

N/A 600 Ω

Position Feedback

N/A No Feedback

Running Time (Motor)

N/A 35 seconds constant, independent of load

Power Supply

N/A 24 VAC ±20%, 50/60 Hz, 24 VDC ±10%

Power Consumption

N/A Running: 1.0 W, Holding: 0.2 W

Transformer Sizing

N/A 1.5 VA (class 2 power source)

Electrical Connection

N/A 3 ft, 18 GA plenum rated cable with 1/2" conduit connector

Overload Protection

N/A Electronic throughout 0º to 95º rotation

Shaft Diameter

N/A Standard: 1/4" to 1/2" round, centers on 3/8"

Angle of Rotation

N/A without end stops: limitless, with end stops; 315º fix 287.5º max. with two end stops

Direction of Rotation (Motor)

N/A reversible with switch

Position Indication

N/A Reflective visual indicator (snap on)

Manual Override

N/A Disengage with magnet


N/A 5 to 95% RH non condensing (EN 60730-1)

Ambient Temperature

N/A -22 to +122 ºF-30 to +50 ºC

Storage Temperature

N/A -40 to +176 ºF-40 to +80 ºC

Noise Level

N/A max. 45 dB (A)


N/A NEMA 2, IP54, UL enclosure type 2

Agency Listing

N/A cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EEC and 2006/95/EC


N/A Maintenance Free

Quality Standards

N/A ISO 9001


N/A 0.40 lb0.18 kg


N/A Damper actuator for operating air control dampers in ventilation and air-conditioning systems for building services installations.

  • For air control dampers up to approximately 4.5 sq. ft.
  • Torque 2 Nm
  • Nominal voltage AC/DC 24 V
  • Control: Open-close or 3-point
  • Running time 35 sec. at 90°