Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 This narrow threshold helps prevent

This narrow threshold helps prevent catastrophic mechanical failure by cutting the 24V circuit to the contactor before oil slugging or overheating occurs

supporting commercial steam tables and autoclaves

specific valve linkages (such as the AV-400 series) may be required depending on your specific valve body configuration

Engineered for high-temperature resilience

Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 This narrow threshold helps preventThe Lochinvar & A. O. Smith 100278104 Switch is a critical safety component designed for high performance hydronic and domestic hot water systems. This 100F manual reset limit switch acts as a primary thermal safeguard, effectively monitoring surface or water temperatures and interrupting the electrical circuit to the gas valve if the 100 degree Fahrenheit threshold is exceeded. Engineering for reliability, this manual reset high limit switch prevents