Lennox 47L19 Limit Switch 318973-401 reducing installation complexity in the

reducing installation complexity in the field

Its rugged construction resists corrosion and mechanical fatigue

The specialized characterizing disc provides an equal percentage flow characteristic

maintaining mechanical integrity even in high-vibration environments commonly found in industrial mechanical rooms

Versatile Mounting: Compact NEMA 1 enclosure with universal mounting brackets allows for seamless replacement of narrower OEM controls

Lennox 47L19 Limit Switch 318973-401 reducing installation complexity in theThe Lennox 47L19 Limit Switch is a critical OEM replacement part designed for precise thermal regulation in residential and commercial furnaces. As an auto reset limit switch, this 36T series disc style component operates on a normally closed circuit, ensuring the burner assembly remains functional only within safe operating parameters. When the internal plenum temperature reaches the 185F high limit threshold, the switch opens, breaking the circuit