Schneider Electric (Barber Colman) MA-405-500 Actuator Freon the internal diaphragm or microswitch

the internal diaphragm or microswitch has likely failed

a full unit replacement is required to maintain system calibration

and 4-20mA proportional signals via easy-to-use onboard switches

preventing heat exchanger cracks and ensuring safe combustion byproduct venting

the Carrier HH18HA280 is compatible with both R-22 and R-410A heat pump systems

Schneider Electric (Barber Colman) MA-405-500 Actuator Freon the internal diaphragm or microswitchThe Schneider Electric (Barber Colman) MA 405 500 is a heavy duty two position oil submerged actuator engineered for precise control of dampers, valves, and specialized HVAC linkages. Operating on 120V AC, this power return unit delivers 16 lb in torque, ensuring reliable fail safe operation in demanding commercial environments. As a legacy standard component, the MA 405 500 serves as the direct replacement for MA 405 191, maintaining the same form