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GK Series (360 in-lb)
Damp.NEMA4(EFS), 360in-lb, SR (2-10V), 24V
Unit of Measure

Specifications

Product Type

N/A Damper Actuator

Actuator Type

N/A Electronic Fail-Safe

Object name

N/A GKB24-SR

TYPECODE

N/A GKB24-SR

Application Type

N/A Air

Fail-Safe

N/A Electronic Fail-Safe

Torque

N/A minimum 360 in·lbminimum 40 N·m

Control Type

N/A Modulating

Control Input

N/A 2-10 VDC

Input Impedance

N/A 100 kΩ for 2 to 10 VDC (0.1 mA), 500 Ω for 4 to 20 mA

Position Feedback

N/A 2 to 10 VDC, 0.5 mA max

Running Time (Motor)

N/A 150 seconds constant, independent of load

Running Time (Fail-Safe)

N/A 35 seconds

Power Supply

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

Power Consumption

N/A running: 12 W, holding: 3.0 W

Transformer Sizing

N/A 21 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: 1/2" to 1.05" round, centers on 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

Direction of Rotation (Fail-Safe)

N/A Reversible with switch

Position Indication

N/A Reflective visual indicator (snap on)

Manual Override

N/A External push button

Humidity

N/A Max. 95% RH non-condensing

Ambient Temperature

N/A -22 to +122 ºF-30 to +50 ºC

Ambient Temperature (safety)

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)

Housing

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

Servicing

N/A Maintenance Free

Quality Standards

N/A ISO 9001

Weight

N/A 3.85 lb1.75 kg

Application

N/A For proportional modulation of dampers in HVAC systems.
The GKB24-SR and GKX24-SR provide electrical power off operation for reliable fail-safe application.
The actuator is mounted directly to a damper shaft up to 1.05" in diameter by a universal clamp. A crank arm and several mounting brackets are available for applications where actuator cannot be direct coupled to the shaft.
The actuator operates in resposne to a 2 to 10 VDC, or with addition of a 500 resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication or master-slave applications.