Belimo GM NEMA 4 Series Non-Spring Return Damper Actuator

The GM non-spring return actuators offers 360 in-lbs for approximately 90 square feet for on/off and floating point control of dampers in HVAC systems. The GMB actuators use a brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode.