Overview
The Belimo TFRB120 is a 120V line-voltage spring return valve actuator built for on/off fail-safe control of characterized control valves in commercial buildings.
Features
- Operates on standard 120 VAC power without needing an external step-down transformer
- Spring return mechanism guarantees safety position placement on power failure
- Pre-wired cable with conduit connector for straightforward wiring setup
- Robust housing design with IP42 / NEMA 2 protection rating
Specifications
- Nominal Voltage: AC 100 to 240 V
- Control Type: On/Off
- Actuator Type: Spring Return
- Torque: 22 in-lb [2.5 Nm]
- Power Consumption: 5 W running, 3 W holding
Applications
- Line-voltage fail-safe hydronic valve control in commercial HVAC systems
- On/off water control for fan coils, reheats, and unit heaters


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