Westinghouse Electric 1265539-B Overload Relay Heater

The Westinghouse 1265539-B BY65 overload relay heater element provides calibrated thermal overload protection for motor circuits in Westinghouse motor starters and overload relay assemblies. This steel, plug-in heater element measures 1-7/16 in by 1 in and is designed for overload relay heater replacement, working with Westinghouse Thermal Overload Relays to generate heat proportional to motor current and trigger a trip under sustained overload. Commonly used in pumps, conveyors, compressors, fans, HVAC systems, and manufacturing equipment including motor control centers and magnetic starters in industrial automation equipment, it ensures dependable motor protection. Compatible with BY65/A64 designs, common replacements include Eaton BY65, Cutler-Hammer BY Series, and Eaton A64 heater elements.