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BELIMO Actuator: Dampers - Fail-Safe Actuators with Spring Return
BELIMOFail-Safe Actuators with Spring Return

BELIMO Actuator: Dampers

The BELIMO NFB24-SR is a proportional, spring-return fail-safe actuator for dampers, operating on 24V AC/DC with a 3.5W power rating. It provides a 90° stroke with CW/CCW shaft rotation and is hardwired for…

SKU 3G-OTH-67682

Brand
BELIMO
Item
Actuator: Dampers
Category
Fail-Safe Actuators with Spring Return
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Technical Specifications

BELIMO
Brand
BELIMO
Power Rating
3.5W
Input Voltage
24V AC/DC
Stroke Degree
90°
Shaft Rotation
CW/CCW
Manufacturer Part Number
NFB24-SR
Auxiliary Switch Included
No
Electrical Connection Type
Hardwired
For Use With Building Automation Systems
Building Automation System Compatible
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BELIMO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BELIMO NFB24-SR is a proportional, spring-return fail-safe actuator for dampers, operating on 24V AC/DC with a 3.5W power rating. It provides a 90° stroke with CW/CCW shaft rotation and is hardwired for electrical connection. This actuator is compatible with building automation systems and features a NEMA 2 / IP54 enclosure rating.

Used in

Common applications for BELIMO
Commercial HVAC damper control — Belimo GMB24-SR proportional actuator for modulating air volume in VAV systems
Hydronic zone temperature regulation — Belimo Z3075Q-J+CQB24-3 3-way zone valve for radiant floor heating loops
Smoke management systems — Belimo TFB24-SR spring return actuator for fire damper closure on power loss
Industrial ventilation balancing — Belimo NMB24-SR non-spring return actuator for large duct dampers in factories
Chilled water valve actuation — Belimo Z2075Q-K+CQB24-3 2-way zone valve for fan coil unit control
Multi-purpose damper control — Belimo LF24-MFT MFT actuator with configurable signal for retrofit projects

BELIMO Products

3G Electric supplies BELIMO fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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