The unit features automatic thermal overload protection to prevent winding failure and utilizes a 1/2-inch flatted shaft on both ends to accommodate dual-blower wheel configurations

Precision Installation: Features a factory-tapped 1 7/16-inch bore for secure mounting to standard high-torque shafts

When servicing specialized boiler sight glass assemblies

Automatic Reset Functionality: Eliminates manual intervention by restoring power once temperatures stabilize within safe limits

making it ideal for frozen food storage and medical refrigeration

Lochinvar & A.O. Smith 100208242 On/Off Switch 323055-751 The unit features automatic thermalThe Lochinvar & A. O. Smith 100208242 On Off Switch is a critical OEM replacement power switch engineered for high efficiency hydronic and water heating systems. As a veteran grade HVAC control component, this rocker style switch features a clearly defined "I O" symbol for definitive status verification during boiler troubleshooting and routine HVAC maintenance. Designed for 120V circuits, it serves as the primary manual disconnect on the control