Its SPDT configuration allows for versatile normally open (NO) and normally closed (NC) operational logic

The MARS 61755 is rated for 40 Amps FLA (Full Load Amps) and up to 240 Amps LRA (Locked Rotor Amps) at 240V

ensuring protection against short circuits without requiring external fusing in many standard configurations

Optimized Combustion: The 3-section burner design provides a stable flame pattern for improved fuel efficiency and reduced emissions

or evaporator coil issues before restoring operation

Lennox 20J83 Limit Switch Its SPDT configuration allows forThe Lennox 20J83 Limit Switch (Model 20J8301) is an essential HVAC OEM replacement part engineered for precise thermal management in high efficiency furnaces. This single pole, single throw (SPST) automatic control is factory calibrated to actuate at 165F, effectively breaking the circuit to prevent heat exchanger damage or unsafe operating conditions. Once the plenum temperature cools to 135F, the switch automatically resets, restoring normal system