7-watt power rating provides the necessary electromagnetic force for reliable plunger seating and valve opening

Optimized Flow Rate: The 3/4 inch NPT threading supports high BTU throughput required for larger furnace cabinets

Reliable RPM Stability: Maintains a consistent 1400 RPM to preserve designed CFM delivery

this switch ensures that your HVAC system remains protected without requiring a manual reset for minor ambient temperature fluctuations once the rollout condition is cleared

preventing energy waste and protecting downstream equipment from condensate backup

Lennox 73K17 Limit Switch 322838-754 7-watt power rating provides theAs an HVAC technician, you know that a failed limit switch is a primary cause for furnace short cycling and overheating. The Lennox 73K17 is a genuine OEM limit switch designed specifically for Lennox, Allied, Armstrong, and Ducane heating units. This SPST normally closed high limit control features a 7 inch insertion length, making it compatible with various air handlers and furnaces, such as the G23Q5 6 series. It operates as an auto reset limit