Westinghouse Electric B3NO-4 Thermal Overload Relay

The Westinghouse B3NO-4 Thermal Overload Relay provides dependable motor overload protection for industrial motor control systems, guarding automated equipment and machinery from overheating. This panel-mounted device is designed for installation in motor starters and control panels across commercial and industrial facilities, with typical uses in motor control centers, conveyors, pumps, compressors, HVAC equipment, and factory automation. Specifications: Manufacturer Part Number B3NO-4, Brand Westinghouse; function is motor overload protection using a thermal overload mechanism, for industrial motor control environments; commonly replaced by Eaton C306 Thermal Overload Relay, Allen-Bradley 592, and Square D 9065.