York S1 025 35358 000 Limit Switch Smith 100277765 Thermal Switch is Smith 100277765 Thermal Switch is a critical safety component designed for high limit temperature protection in residential and commercial water heaters the 113275 is manufactured with a corrosion resistant coating that prevents seizing in the high heat zones of the burner assembly and heat exchanger panels OEM Compatibility: Authentic York S1 025 35358 000 replacement ensures correct mounting and terminal alignment for Source 1 equipment this manual reset switch requires a technician to physically inspect the unit and reset the toggle before operation can resume