Belimo NFB24 Damper Actuator 24 VAC 50 Hz IP54

Belimo NFB24 Damper Actuator is a fail‑safe, direct‑mounted actuator for HVAC dampers that runs on 24 VAC or 24 VDC with 50/60 Hz compatibility and an IP54 enclosure for reliable operation in exposed equipment. It delivers up to 90 in‑lb (approximately 10 Nm) of torque to move dampers through a 95° travel, making it suitable for two‑position open/close control in commercial air‑handling applications. The unit draws about 2.5 W during steady operation and up to 6 W when actively moving, with a 3 ft lead cable (18 AWG) and a 1/2 in conduit connector for flexible installation. Its compact housing measures roughly 3.15 in high by 3.42 in deep and is designed for direct mounting on common damper shafts, enabling easy retrofits in space‑constrained locations. Belimo’s NFB24 family represents fail‑safe damper actuators engineered to move to a predetermined fail position when power is removed, supporting safe, energy‑efficient damper control in building automation systems.