Designed as an XUP-3-W/MH configuration

Is the PS2-Y7A compatible with R-410A systems

This part uses a standard platinum RTD curve

Designed for veterans who demand reliability

Trane SWT1278 Limit Switch 321894-709 Designed as an XUP-3-W/MH configurationThe Trane SWT1278 Limit Switch is a critical safety component designed for precise thermal regulation within furnace supply plenums and industrial heating configurations. Engineered for high reliability performance, this fixed temperature limit control features a 150F opening setpoint (150op) to prevent heat exchanger overheating and a 120F closing setpoint (120cl) for circuit reset. As a veteran grade OEM replacement part, the SWT1278 is essential