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Using a 650 PSI pilot for low-side protection would fail to protect the system from freeze-ups or loss of charge
high-intensity spark to prevent delayed ignition and combustion vibration in high-efficiency condensing models
Enhanced Durability: The enclosed housing protects critical components from environmental contaminants and reduces operational noise
The signal selection is managed via internal DIP switches
Direct Acting Reliability: Designed to provide immediate shutoff and opening without requiring a minimum operating pressure differential
MARS 43331 Pressure Switch 318973-401 Using a 650 PSI pilotThe MARS 43331 Pressure Switch is a professional grade high pressure cutout designed for heavy duty HVACR applications. Engineered for precision, this SPST normally closed control features a fixed setpoint that triggers an open on pressure rise at 400 PSI and provides an automatic reset when system pressure drops to 300 PSI. This encapsulated pressure control is built to withstand harsh environments, utilizing a hermetically sealed sensor to ensure