Durable Construction: Features a rugged 48-frame design and sleeve bearings for quiet

this 10W holding power coil provides the necessary magnetic force for consistent valve actuation under standard 60Hz cycles

this ECM motor (Electronically Commutated Motor) provides precise airflow control by modulating speeds to meet real-time system demands

this model includes the built-in conduit connector for secure electrical housing integration

This is specifically used in applications where centralized control is required and local tampering with temperature or humidity settings must be prevented

Trane SWT1274 Limit Switch 321142-301 Durable Construction: Features a ruggedThe Trane SWT1274 Limit Switch (also listed as SWT01274) is a high precision HVAC safety control designed for furnace high limit protection. As a veteran grade OEM furnace part, this thermal limit switch is engineered to monitor the supply plenum temperature, providing a critical fail safe against heat exchanger damage. It operates with a fixed factory setting that opens at 125F to break the heating circuit and closes at 95F to allow for an automatic