Trane CNT3159 Pressure Switch 320735-701 supporting up to a 6000W

supporting up to a 6000W resistive load at 22A

allowing only vapor to exit while metering oil back to the crankcase through a calibrated orifice

significantly reducing potential failure points

it must be paired with a matching condenser and correctly sized metering device (orifice or TXV) to maintain proper subcooling and superheat levels

Trane CNT3159 Pressure Switch 320735-701 supporting up to a 6000WThe Trane CNT3159 Pressure Switch is an essential high pressure cut out designed for precise refrigerant circuit monitoring in residential and light commercial HVAC units. This SPNO (Single Pole Normally Open) switch serves as a critical safety component, engineered to open the circuit when system pressure reaches 400 PSI and reset upon falling to 250 PSI. Built for compatibility with modern high pressure refrigerants like R 410A, the CNT3159 prevents