Westinghouse Electric Corporation 37B331G09 Contact Kit

The Westinghouse 373B331G09 Contact Kit is a replacement renewal kit for Westinghouse A200 Series magnetic contactors and A201 Model J contactors, designed to swap worn moving and stationary power contacts in NEMA Size 1 three-pole and four-pole assemblies. By renewing these contacts, it restores proper switching performance, reduces contact resistance, and extends the service life of industrial motor control equipment used in motor starters, contactors, HVAC systems, compressors, pumps, conveyors, and industrial automation panels. This kit is manufactured under the Westinghouse/Cutler-Hammer/Eaton umbrella and carries part number 373B331G09; it is specified for 27 Amps and voltages up to 600 VAC, with support for 3-pole or 4-pole configurations in NEMA Size 1 contactors. Typical applications include motor control centers, starter assemblies, and control panels where reliable contact replacement and electrical load switching are required for continuous operation. Common replacements include Eaton A200 Size 1 Contact Kit, Cutler-Hammer Size 1 Contact Kit, and Allen-Bradley Size 1 Contactor Contact Kit for compatible A200/A201 equipment.