York S1-025-22273-001 Limit Switch 318423-701 Solid-State Reliability: Built with high-grade

Solid-State Reliability: Built with high-grade soldered relays and trace paths to resist moisture and carbon build-up common in older furnace cabinets

Advanced Protection: Integrated internal break thermal protection prevents motor burnout during high-load or phase-loss scenarios

this industrial vacuum breaker automatically relieves induced vacuums in condensing equipment

ensuring a seamless fit and reliable operation in Modine unit heaters including models HD30

York S1-025-22273-001 Limit Switch 318423-701 Solid-State Reliability: Built with high-gradeThe York S1 025 22273 001 Limit Switch is a critical OEM safety component designed for precise thermal management within HVAC furnace systems. This SPST (Single Pole Single Throw) fixed temperature control operates on an auto reset logic, ensuring the burner circuit opens when temperatures reach the 150F trip point and automatically closes once the system cools to 110F. Engineered for York, Coleman, and Luxaire gas furnaces, this high limit switch