or L91 series Pressuretrols

Replacement is typically necessary if you observe significant oxidation

What is the difference between the inductive and resistive ratings on this contactor

the internal mechanism snaps to the "Normally Closed" position (C to NC)

Lennox 47L19 Limit Switch 321894-706 or L91 series PressuretrolsThe 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