York S1-025-27747-012 Rollout Switch Els PW 17895 plenum-rated NEMA 1 enclosure

plenum-rated NEMA 1 enclosure

covering all standard 208/230V residential and commercial single-phase systems

This is critical for preventing "thermal lag" which can delay the valve's response during an overheat condition

The Lennox 72H02 Prefilter is a critical OEM replacement air filter designed for high-efficiency electronic air cleaners

Key Benefits for Contractors Precise timing control to ensure optimal compressor protection

York S1-025-27747-012 Rollout Switch Els PW 17895 plenum-rated NEMA 1 enclosureThe York S1 025 27747 012 Rollout Switch is a critical safety component designed for York gas furnaces and Johnson Controls HVAC systems. Engineered to respond to flame rollout or unsafe combustion conditions, this manual reset limit switch triggers at a fixed thermal threshold of 260 degrees Fahrenheit. As a Single Pole Single Throw (SPST) control, it serves as the primary circuit interrupt for the gas valve when it detects temperatures exceeding