Williams P254000 Thermocouple This 100-140F AUTO Limit Switch

This 100-140F AUTO Limit Switch is an SPST (Single Pole Single Throw) device designed to maintain air temperature within the plenum

Which systems are compatible with part S1-025-19499-001

preventing tripped breakers and winding overheating

The Bard HVAC 8407-045BX Transformer is a critical 40VA-rated component engineered for high-reliability power conversion in Bard wall-mount units and light commercial HVAC equipment

providing the rapid heating required to initiate the combustion sequence safely

Williams P254000 Thermocouple This 100-140F AUTO Limit SwitchThe Williams P254000 Thermocouple is a high performance flame sensing replacement designed specifically for Williams gas fired furnaces and wall heaters. As a critical safety component, this thermocouple lead generates the necessary millivoltage to hold the gas valve open during operation. Engineered for high temperature environments, the P254000 provides stable pilot flame sensing to prevent hazardous unburned gas buildup. This HVAC replacement part