Belimo GKB24-SR Electronic Fail-Safe Damper Actuator 360 in-lb 24V

The Belimo GKB24-SR is a high-performance damper actuator delivering 360 in-lb (40 Nm) of torque with electronic fail-safe functionality, designed for AC/DC 24V operation with modulating 2-10VDC control. This robust actuator is capable of operating dampers up to approximately 90 square feet, making it ideal for commercial HVAC applications requiring reliable damper control and safety features.

Key Features:

• 360 in-lb (40 Nm) torque with 95-degree angle of rotation
• Electronic fail-safe operation with reversible fail-safe direction via switch
• AC/DC 24V voltage with 2-10VDC modulating control signal
• 150-second motor runtime per 90 degrees, fail-safe operation in less than 35 seconds
• External push button manual override for field testing and maintenance
• IP54, NEMA 2, UL Enclosure Type 2 protection rating
• Low power consumption: 3W holding, 11W running
• Adjustable fail-safe position with reversible direction of rotation

The GKB24-SR features cable electrical connection and built-in safety functions for reliable damper positioning during power loss events. Add-on field mount auxiliary switches and feedback potentiometers are available for enhanced monitoring and control integration. This actuator is backed by Belimo's reputation for quality and is suitable for variable air volume (VAV) systems, outdoor air control, and smoke control applications.