MARS 43347 Pressure Switch 321894-706 while the mechanical position indicator

while the mechanical position indicator allows for quick visual verification in the field

Key Benefits: Fail-Safe Reliability: Mechanical spring return ensures damps return to a safe position during power loss

Factory replacement kit allows for in-line repairs

Advanced Surge Damping: Jumper-controlled electronic dampening stabilizes readings in turbulent hydronic systems

this direct drive blower motor ensures your system maintains factory-grade efficiency and static pressure performance

MARS 43347 Pressure Switch 321894-706 while the mechanical position indicatorThe MARS 43347 Pressure Switch is a heavy duty, auto reset low pressure control engineered for precise refrigerant monitoring in residential and commercial HVACR systems. This SPST normally open pressure switch is factory set to open at 25 PSI and close at 65 PSI, providing reliable protection against low side pressure drops that can lead to compressor failure. Specifically designed for compatibility with common refrigerants, including R 410A