preventing delayed ignition or uneven heat exchanger loading

the internal components support both horizontal and vertical mounting configurations

Versatile Compatibility: Seamlessly integrates with two-position spring return actuators for fail-safe operation in standard HVAC zones

How do I wire the P terminal on this 5-wire switch

Maintenance-Free: Automatic reset functionality ensures the system resumes operation once pressures return to safe levels (300 PSIG)

Lennox 10M61 Limit Switch 319852-301 preventing delayed ignition or unevenThe Lennox 10M61 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial furnace heating systems. As an OEM replacement part, this L180 40F limit control is engineered to open the electrical circuit when the plenum temperature reaches 180F, effectively preventing heat exchanger damage and ensuring safe appliance operation. It features a 40F differential, meaning the switch will