MARS 43331 Pressure Switch 318973-401 high-intensity spark to prevent delayed

high-intensity spark to prevent delayed ignition and combustion vibration in high-efficiency condensing models

Nuisance tripping is typically caused by restricted airflow

Its integrated pipe tap further simplifies pressure testing and installation diagnostics

The Ranco ETC-112100-000 is an industrial-grade single stage electronic temperature control engineered for precision in demanding HVACR environments

Using a 650 PSI pilot for low-side protection would fail to protect the system from freeze-ups or loss of charge

MARS 43331 Pressure Switch 318973-401 high-intensity spark to prevent delayedThe 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