York S1-025-47176-000 Limit Switch 322838-752 The McDonnell & Miller FS254

The McDonnell & Miller FS254 Snap Switch (Part Number 120610) is a heavy-duty

making it the standard choice for controlling different speed taps on a blower motor based on the heating or cooling demand

Enhanced Durability: Provides excellent resistance to thermal expansion and contraction

housing a built-in shunt to maintain continuous power to the crankcase heater even when the compressor is cycled off

York S1-025-47176-000 Limit Switch 322838-752 The McDonnell & Miller FS254The York S1 025 47176 000 Limit Switch is a critical safety component designed for precise thermal monitoring in HVAC furnaces and residential heating systems. Engineering specifications for this OEM York part include a fixed 130F trip point (open) and a 95F reset point (close). This high limit control prevents heat exchanger damage by interrupting the burner circuit when internal temperatures exceed safe operating parameters due to restricted airflow