Trane SWT1278 Limit Switch 320819-301 Signal Reliability: Provides consistent multi-path

Signal Reliability: Provides consistent multi-path data transmission between the PCB and interface

Common indicators include increased amperage draw

This HVAC blower assembly component is compatible with a wide range of models

CCW stands for Counter-Clockwise rotation when viewing the motor from the lead end

Trane SWT1278 Limit Switch 320819-301 Signal Reliability: Provides consistent multi-pathThe 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