Optimized Furnace Safety: Precise 210-degree Fahrenheit trip point ensures rapid shutdown during over-temperature events

allowing for sensor replacement without draining the entire boiler loop

Broad Compatibility: Works seamlessly with most 24V control circuits and modern anticipator-style thermostats

Constructed with a heavy-duty aluminum housing

Common Questions What is the difference between NPS and NPT for this adapter

York S1-025-30861-000 Limit Switch Optimized Furnace Safety: Precise 210-degreeThe York S1 025 30861 000 Limit Switch is a critical safety component engineered for HVAC furnace applications requiring precise thermal monitoring. This OEM York replacement part features an automatic reset mechanism designed to protect the heat exchanger and internal components from high limit conditions. With a 3 inch probe, this 145 175F auto limit switch is calibrated to open at 175F to interrupt the heating circuit and automatically close