Trane SWT3544 Pressure Switch R-22 If the original box is

If the original box is cracked or the drainage ports are blocked

a specific conversion kit must be installed by a qualified technician to change the regulator spring and orifice settings

Contractor-Grade Durability: Built with premium resistive alloy to withstand the high-velocity airflow and thermal cycling of variable-speed air handlers

preventing the electrical mismatches and "hunting" issues often associated with generic alternatives

though it can handle significantly higher close-off pressures depending on the paired actuator

Trane SWT3544 Pressure Switch R-22 If the original box isFor mid to large scale refrigeration and HVACR systems, the Trane SWT3544 Pressure Switch is a critical safety component designed to mitigate risk from excessive head pressure. As a High Pressure Switch, this OEM replacement parts (often superceded by part number SWT03544) is factory set to trip at 650 PSI, effectively cutting the control circuit to protect the compressor from mechanical failure or system rupture. With a SPST (Single Pole Single