Description
Belimo CQKB24-SR-RL Proportional Damper Actuator Overview
The Belimo CQKB24-SR-RL is a high-quality, spring-return damper actuator engineered for precise proportional control in commercial and industrial HVAC applications. Designed to operate on 24V AC/DC power, this normally closed (NC) actuator delivers dependable fail-safe performance, automatically returning to the closed position upon loss of power or signal — a critical safety feature for ventilation and air-handling systems.
Proportional Control for Precision Airflow Management
Equipped with a proportional (SR) control input, the CQKB24-SR-RL accepts a standard 0–10V or 2–10V DC modulating signal, enabling smooth and accurate positioning of damper blades. This makes it an ideal choice for variable air volume (VAV) systems, economizer controls, and building automation applications where precise airflow regulation is essential.
NEMA 2 Enclosure
The NEMA 2-rated enclosure provides protection against dripping and light splashing of water, making this actuator suitable for indoor installations where moisture exposure may be a concern. The robust housing ensures long service life in demanding mechanical room and air-handling unit environments.
Key Features
- Brand: Belimo — global leader in HVAC actuator technology
- SKU: CQKB24-SR-RL
- Supply voltage: 24V AC/DC
- Fail-safe action: Normally Closed (NC) spring return
- Control signal: Proportional (SR) — 0–10V or 2–10V DC
- Enclosure rating: NEMA 2
- Reversible linkage (RL) for flexible mounting configurations
- Designed for commercial and industrial HVAC damper applications
- Compatible with building automation and DDC control systems
Typical Applications
- Variable air volume (VAV) systems
- Air handling units (AHUs)
- Economizer damper control
- Outdoor air and exhaust dampers
- Building automation system (BAS) integration
Why Choose Belimo?
Belimo is a world-renowned manufacturer of actuators, control valves, and sensors for HVAC systems. Their products are trusted by mechanical contractors, engineers, and building automation professionals for their reliability, ease of installation, and long service life. The CQKB24-SR-RL continues this tradition of excellence with a compact, field-proven design built to perform in the most demanding commercial HVAC environments.
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