Robertshaw 5501-378 Infinite Switch Smith boiler parts configurations across

Smith boiler parts configurations across multiple product generations

For a precise mechanical installation

Humming often indicates debris between the armature and the coil

Gas Type Compatibility: Engineered for liquid propane (LPG) applications in Williams Top-Vent and Direct-Vent gravity furnaces

Robertshaw 5501-378 Infinite Switch Smith boiler parts configurations acrossThe Robertshaw 5501 378 Infinite Switch is a heavy duty 240V infinite control switch designed for precision temperature management in electric ranges and commercial heating equipment. Engineered as a parallel circuit voltage sensing switch, this M series component offers proportional power control for resistive loads, making it a reliable direct replacement for 5501 378 and various OEM 5500 series models. As a veteran grade electric range infinite