Belimo Aircontrols NFBUP-S Actuator (24 to 240VAC)

Features:

• 90 in-lbs (10 Nm) min. torque. 50% more than original NF.
• New smaller housing for tight spaces, plus reduced shaft-center to edge distance: 1.25" compared to 1.97" with today's NF.
• Improved motor run-times and spring return time.
• Manual override is now standard on all models. Provides same benefits as today's AF series; faster installation and easier maintenance of equipment with lock-in-place switch.
• Don't worry about actuator burn-out. Belimo is overload-proof throughout rotation.
• Universal power supply (On/Off models only) can accept 24 up to 240 VAC. One actuator for all power supply voltages, ideal for customers with limited storage space (store rooms, service vehicles, etc).
• Built-in mechanical limit stop, a separate accessory no longer needed.

The NFBUP-S is used for For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer's specifications. Control is On/Off from an auxiliary contact, or a manual switch. The actuator is mounted directly to a damper shaft up to 1.05" in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.

The NFB and NFX series actuators provide true spring return operation for reliable failsafe application and positive close off on air tight dampers. The spring return system provides constant torque to the damper with, and without, power applied to the actuator.