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Belimo CQKB24-RR 24V ZoneTight Electronic Fail-Safe Valve Actuator, On/Off, Normally Closed
- Regular price
- $359.00
- Sale price
- $359.00
- Regular price
-
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Product Description P/N: CQKB24-RR
Description
The Belimo CQKB24-RR is a ZoneTight electronic fail-safe valve actuator designed for on/off control of compatible HVAC zone valves. Operating on 24 VAC/VDC, it provides normally closed operation and moves the valve to the closed fail-safe position following power loss. Its compact design mounts directly onto the matching valve without tools or additional linkage.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | CQKB24-RR |
| Subcategory | Electric Valve Actuators |
| Series / Actuator Type | ZoneTight; electronic fail-safe rotary valve actuator |
| Control / Fail-Safe Position | On/Off; normally closed; fail-safe closed |
| Nominal Supply Voltage | 24 VAC/VDC; 50/60 Hz with AC power |
| Operating Voltage Range | 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 2.5 W running; 0.5 W holding; 5 VA |
| Angle of Rotation | 90°; adjustable with integrated mechanical stop |
| Motor Running Time | 75 seconds per 90° |
| Fail-Safe Running Time | Less than 60 seconds |
| Pre-Charging / Bridging Time | 5–20 seconds pre-charging; 2-second power-interruption bridging |
| Mounting / Position Indication | Direct tool-free attachment to compatible valve; pointer indicator |
| Overload / Electrical Protection | Electronic overload protection throughout 0–90°; double insulated |
| Enclosure Ratings | IP40; NEMA 2; UL Enclosure Type 2 |
| Ambient Operating Conditions | 35–104°F; maximum 95% RH, non-condensing |
| Motor / Fail-Safe Sound Power | 35 dB(A) / 35 dB(A) |
| Weight | 0.55 lb |
Information About CQKB24-RR
The CQKB24-RR is part of Belimo’s ZoneTight actuator family for hydronic zone-control applications. Its electronic fail-safe system incorporates a pre-charging period of 5–20 seconds and a two-second power-interruption bridging time. An integrated mechanical stop adjusts rotational travel, while a pointer indicates valve position locally. Electronic overload protection covers the full operating rotation, and the double-insulated construction supports installation with a suitable Class 2 power supply.
Key Features:
- On/Off Control: Operates compatible zone valves through switched 24V power.
- Normally Closed Operation: Provides the closed configuration specified for this actuator model.
- Electronic Fail-Safe: Moves the valve to the closed position following a sustained power interruption.
- Dual Supply Compatibility: Accepts either 24 VAC or 24 VDC power.
- Direct Valve Attachment: Mounts onto the matching valve without tools or additional linkage.
- Quarter-Turn Movement: Provides 90° rotation with an adjustable mechanical stop.
- Defined Motor Travel: Completes 90° of powered movement in 75 seconds.
- Fail-Safe Return Time: Reaches the fail-safe position in less than 60 seconds.
- Interruption Bridging: Includes a two-second bridging time for brief power interruptions.
- Electronic Protection: Protects the actuator against overload throughout its operating travel.
- Local Position Indication: Uses a pointer to display valve position.
- Low Holding Consumption: Requires 0.5 W while maintaining position.
The CQKB24-RR delivers the reliability and precision required for two-position hydronic zone control and automatic valve closure during power loss.
Description
The Belimo CQKB24-RR is a ZoneTight electronic fail-safe valve actuator designed for on/off control of compatible HVAC zone valves. Operating on 24 VAC/VDC, it provides normally closed operation and moves the valve to the closed fail-safe position following power loss. Its compact design mounts directly onto the matching valve without tools or additional linkage.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | CQKB24-RR |
| Subcategory | Electric Valve Actuators |
| Series / Actuator Type | ZoneTight; electronic fail-safe rotary valve actuator |
| Control / Fail-Safe Position | On/Off; normally closed; fail-safe closed |
| Nominal Supply Voltage | 24 VAC/VDC; 50/60 Hz with AC power |
| Operating Voltage Range | 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 2.5 W running; 0.5 W holding; 5 VA |
| Angle of Rotation | 90°; adjustable with integrated mechanical stop |
| Motor Running Time | 75 seconds per 90° |
| Fail-Safe Running Time | Less than 60 seconds |
| Pre-Charging / Bridging Time | 5–20 seconds pre-charging; 2-second power-interruption bridging |
| Mounting / Position Indication | Direct tool-free attachment to compatible valve; pointer indicator |
| Overload / Electrical Protection | Electronic overload protection throughout 0–90°; double insulated |
| Enclosure Ratings | IP40; NEMA 2; UL Enclosure Type 2 |
| Ambient Operating Conditions | 35–104°F; maximum 95% RH, non-condensing |
| Motor / Fail-Safe Sound Power | 35 dB(A) / 35 dB(A) |
| Weight | 0.55 lb |
Information About CQKB24-RR
The CQKB24-RR is part of Belimo’s ZoneTight actuator family for hydronic zone-control applications. Its electronic fail-safe system incorporates a pre-charging period of 5–20 seconds and a two-second power-interruption bridging time. An integrated mechanical stop adjusts rotational travel, while a pointer indicates valve position locally. Electronic overload protection covers the full operating rotation, and the double-insulated construction supports installation with a suitable Class 2 power supply.
Key Features:
- On/Off Control: Operates compatible zone valves through switched 24V power.
- Normally Closed Operation: Provides the closed configuration specified for this actuator model.
- Electronic Fail-Safe: Moves the valve to the closed position following a sustained power interruption.
- Dual Supply Compatibility: Accepts either 24 VAC or 24 VDC power.
- Direct Valve Attachment: Mounts onto the matching valve without tools or additional linkage.
- Quarter-Turn Movement: Provides 90° rotation with an adjustable mechanical stop.
- Defined Motor Travel: Completes 90° of powered movement in 75 seconds.
- Fail-Safe Return Time: Reaches the fail-safe position in less than 60 seconds.
- Interruption Bridging: Includes a two-second bridging time for brief power interruptions.
- Electronic Protection: Protects the actuator against overload throughout its operating travel.
- Local Position Indication: Uses a pointer to display valve position.
- Low Holding Consumption: Requires 0.5 W while maintaining position.
The CQKB24-RR delivers the reliability and precision required for two-position hydronic zone control and automatic valve closure during power loss.
