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GM Series with NEMA 4 Housing (320 in-lb)
Damp.NEMA4, 360in-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 GMB24-3-T N4


N/A GMB24-3-T N4

Application Type

N/A Air


N/A Non-Spring


N/A minimum 360 in·lbminimum 40 N·m

Control Type

N/A On/Off, Floating Point

Control Input

N/A On/Off, Floating Point

Input Impedance

N/A 600 Ω

Running Time (Motor)

N/A 150 seconds constant, independent of load

Power Supply

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

Power Consumption

N/A Running: 4 W, Holding: 2.0 W

Transformer Sizing

N/A 6 VA (class 2 power source)

Electrical Connection

N/A screw terminal (for 26 to 14 GA wire), 1/2" conduit connector

Overload Protection

N/A Electronic throughout 0º to 95º rotation

Shaft Diameter

N/A Standard: 1/2" to 1.05" round, centers on 1/2" and 3/4" with insert, 1.05 without insert

Angle of Rotation

N/A max. 95º, adjustable with mechanical stop

Direction of Rotation (Motor)

N/A reversible with switch

Position Indication

N/A Reflective visual indicator (snap on)

Manual Override

N/A External push button


N/A 5 to 100% RH (UL Type 4)

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 4, IP66, UL Enclosure Type 4

Agency Listing

N/A cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1, CSA C22.2 No 24-93, CE acc. to 89/336/EEC


N/A Maintenance Free

Quality Standards

N/A ISO 9001


N/A 9.80 lb4.45 kg


N/A For on/off and floating point control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer's specifications.
The actuator is mounted directly to a damper shaft up to 1.05" in diameter by means of its universal clamp.