and heat pump systems (without auxiliary heat)

Common Questions: Is this compatible with 115V or 230V systems

ensuring reliable switching for pilot-operated valves and dampers

System Protection: Acts as the primary safety layer against Restricted airflow

This high-side safety component is engineered to monitor discharge pressures and prevent compressor damage due to excessive head pressure

Trane CNT0674 v 318820-201 and heat pump systems (withoutThe Trane CNT0674 is an industrial grade 170 210F AUTO Limit Switch designed for high performance temperature regulation in forced air systems. As a SPST N C (Single Pole Single Throw, Normally Closed) safety control, this component is critical for preventing heat exchanger overheating. The switch is calibrated to open at 210F, effectively interrupting the burner or heating circuit when thermal limits are exceeded, and automatically resets when