GKRX24-3 N4


Valve Actuator,Electronic Fail-Safe,24V,On/Off/Floating Point,NEMA 4
Fail-safe position

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Weight 3.2 lbs
Actuator Type

Electronic fail-safe



Control type


maintenance free
Power consumption in operation
12 W
Power consumption in rest position
3 W
Transformer sizing
21 VA (class 2 power source)
Ambient humidity
5...95% r.H. non condensing (EN 60730-1)
Housing material
Electrical Connection
18 GA plenum cable, 3 ft [1 m], with 1/2" conduit connector
Manual override
under cover
Angle of rotation
Max. 95°, adjustable with mechanical stop
Noise level, motor
<45 dB (A) 
Position indication
reflective visual indicator (snap on)
Ambient temperature
-22...122°F [-30...50°C]
Non-operating temperature
-40...176°F [-40...80°C]
On/Off|Floating point
direction of rotation motor
reversible with built-in switch
direction of rotation spring-return
reversible with switch
Overload Protection
electronic thoughout 0° to 90° rotation
Input Impedance
100 kΩ
Quality Standard
ISO 9001
Degree of Protection
IP66, NEMA 4X, UL Enclosure Type 4X
Nominal voltage
AC 24 V
Power Supply
24 VAC, ±20%, 50/60 Hz
Agency Listing
cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1, CSA C22.2 No 24-93, CE acc. to 89/336/EC
Emergency control function
Electronic Fail-Safe
Family Series
GK Series
Noise Level (Fail-Safe)
<45 dB (A) 
Running time (Fail-Safe)
35 seconds
Running Time (Motor)
150 sec constant, independent of load
Running time motor note
constant, independent of load
Running Time (Fail-Safe)
<35 sec
Fail-Safe function
Electronic fail-safe
Control type
Degree of protection IEC/EN
Degree of protection NEMA/UL
UL Enclosure Type 4X
Tagging function
Pre-charging time
5 to 20 seconds
Bridging time
2 sec delay before fail-safe activates
CP65 Warning
⚠ WARNING: For Belimo Products sold in California, these Products do or may contain chemicals which are known to the State of California to cause cancer and or birth defects or other reproductive harms. For more information see www.p65warnings.ca.gov.

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