McDonnell & Miller 310462 Switch Assembly Els PW 29614 allowing for rapid "replace-in-place" installation

allowing for rapid "replace-in-place" installation without disturbing hubs or moving connected equipment like motors or pumps

ensuring proper BTU output and combustion efficiency

this updated component maintains a NEMA 4 waterproof rating

bypassing manual menu navigation for every unit on a multi-family or commercial project

Direct OEM Fitment: Eliminates the compatibility risks associated with universal aftermarket blades

McDonnell & Miller 310462 Switch Assembly Els PW 29614 allowing for rapid "replace-in-place" installationThe McDonnell & Miller 310462 (Model SWA 150S) is a heavy duty snap action switch assembly designed for precise low water cut off and pump controller transitions. This automatic reset assembly is a critical replacement component for Series 150S and Series 157S mechanical boiler controls. Built to manage steam boiler water levels up to a maximum operating pressure of 150 psi, the SWA150S provides reliable SPDT switching to prevent dry fire conditions