MARS 43313 Cycling Switch Standardized Electrical Specs: Operates on

Standardized Electrical Specs: Operates on standard 120V circuits

This genuine McDonnell & Miller 21-12 part ensures your feeder maintains its proportional feed action without environmental interference

This yellow-dot coded Flame Rollout Switch is a standard security measure in models ranging from 100 to 125 size

When troubleshooting furnace short-cycling or blower fan "run-on" issues

MARS 43313 Cycling Switch Standardized Electrical Specs: Operates onThe MARS 43313 Manual Reset Cycling Switch is a heavy duty HVAC pressure control designed for precise condenser fan management in R 410A systems and other high pressure applications. Engineered with a 410 PSI open on rise setpoint, this SPST switch provides critical high limit protection by interrupting the circuit when system pressures exceed safe operational thresholds. The manual reset feature ensures that technicians can investigate the root cause