MARS 39220 Limit Switch Common Questions Is the 512-050-230

Common Questions Is the 512-050-230 thermo-fuse resettable

This genuine Johnson Controls replacement part provides the exact tolerances required for industrial and commercial HVAC filtration maintenance

essential for managing high-temperature water flow in rigorous food service environments

you would typically require the 143-08-021-02 green spring

For field technicians and mechanical contractors

MARS 39220 Limit Switch Common Questions Is the 512-050-230The MARS 39220 Limit Switch is a versatile, high reliability solution for field service technicians needing an exact or universal replacement for furnace high limit applications. This adjustable snap disc thermostat features a temperature range of 135F to 175F with a fixed 40F differential, allowing for precise calibration to match specific internal plenum requirements. Designed as an open on rise safety device, the 39220 ensures the heating circuit