Belimo Spring Return Fail-Safe, Fire & Smoke Actuator (70 in-lb) - 120 VAC (No Aux Switch)

Features: True mechanical spring return - the most reliable fail-safe Reverse mount for clockwise or counterclockwise fail-safe Check damper position easily with clear position indicator Overload-proof throughout rotation Easy mechanical stop to adjust angle of rotation (add ZDB-AF2 US accessory/FSAF and FSNF only) Built-in auxiliary switch is easy to use, offers feedback or signal for additional device (-S models) Manual override crank speeds installation (only on FSAF models) The same 100% steel toothed cold-weld clamp that Belimo uses on all actuators is used on the FS Series. No slipping on damper shafts will occur Tested at high torque load for a minimum of 20,000 cycles per UL555(S) Reliable DC motor - low current draw Permanently lubricated gears FSNF and FSLF actuators meet Uniform Building Code (UBC) requirements Belimo actuator is silent when holding at end position The type FSNF spring-return actuator is intended for the operation of smoke and combination fire and smoke dampers in ventilation an...