Belimo NKQB24-SR Spring Return Damper Actuator Second Timing - 24V 4

The Belimo NKQB24-SR is a spring return damper actuator designed for precise control of HVAC dampers in commercial and industrial applications. This robust actuator operates on 24V AC/DC power and features a 4-second timing for fast, responsive damper positioning.

Key Features:

• Spring return functionality for fail-safe operation—damper returns to default position on power loss
• 24V AC/DC universal voltage operation for flexible installation
• 4-second nominal run time provides quick response to control signals
• 35 in-lb (4 Nm) torque output for reliable damper control
• Non-spring return positioning with 2-position or floating control
• Durable construction suitable for commercial HVAC systems
• Direct mounting to standard damper linkages
• Auxiliary switch for status indication

This actuator is ideal for applications requiring dependable spring return operation, including smoke/fire damper control, ventilation systems, and zone control applications where fail-safe positioning is critical. The NKQB24-SR combines Belimo's legendary reliability with straightforward installation and long service life.