York S1-025-37344-000 Limit Switch the "D" suffix indicates that

the "D" suffix indicates that this specific model must be mounted horizontally for the poppet to function within specified pressure tolerances

Key Benefits Direct Fit Compatibility: Specifically engineered for the Honeywell TP970 Series

When replacing a furnace blower relay

The breaker acts as a resettable safety mechanism that protects the transformer's secondary windings from damage caused by external shorts or excessive current draw

This cable is specifically engineered for use with Honeywell S86 series and S87 series intermittent pilot modules

York S1-025-37344-000 Limit Switch the "D" suffix indicates thatThe York S1 025 37344 000 Limit Switch is a critical safety component engineered for precise thermal regulation within York, Luxaire, and Coleman gas furnaces. This OEM replacement part operates as a normally closed switch that opens the electrical circuit when the internal plenum temperature reaches its 215 degree Fahrenheit trip point. Designed with a 30 degree differential, the automatic reset furnace limit re closes at 185 degrees Fahrenheit,