Lochinvar & A.O. Smith 100157720 Switch 30067439-890 Safety Compliance: Features rapid-response internal

Safety Compliance: Features rapid-response internal shut-off to prevent gas leakage during flame loss scenarios

When troubleshooting unit heater ignition failure or erratic flame patterns

allowing for accurate dual-pressure system switching without signal drift

Operating on 460V 3-Phase power at 60Hz

verify the program code matches your specific air handler model to ensure HVAC part compatibility and optimal torque delivery

Lochinvar & A.O. Smith 100157720 Switch 30067439-890 Safety Compliance: Features rapid-response internalThe Lochinvar & A. O. Smith 100157720 Switch is a critical safety component designed for high performance hydronic systems. This Adjustable High Limit control features a Manual Reset (M R) mechanism, ensuring that the system remains locked out if temperatures exceed the predetermined safety threshold until a technician can perform a diagnostic check. Engineers and field contractors rely on the 100157720 limit switch for its precision in monitoring