Always match the RPM rating listed on your existing motor nameplate

Always verify your motor shaft diameter with a caliper before installation

which is critical for proper dial alignment during installation

which is critical for preventing compressor slugging and maintaining system capacity

Belimo ARX120-SR Actuator 321142-301 Always match the RPM ratingThe Belimo ARX120 SR is a robust non spring return actuator designed for the precise modulation of dampers and valves in high demand HVACR systems. Delivering a powerful 180 in lb torque, this unit is engineered to handle larger air handling units and complex flow control applications where reliability is paramount. Operating on a universal 120 to 240Vac power supply, it offers professional installers significant flexibility across various site