Westinghouse Electric AA43A Thermal Overload Relay

Westinghouse's AA43A Thermal Overload Relay (MPN AA43A) provides dependable thermal overload protection for industrial motors in automated equipment and machinery. This panel-mounted device is commonly installed in motor starters, conveyor systems, compressors, pump controls, and a broad range of manufacturing equipment across commercial and industrial facilities, and is used in motor control centers, material handling systems, industrial pumps, HVAC equipment, and factory automation machinery. Maintenance teams, OEM technicians, and system integrators rely on the AA43A for replacement, retrofit, and control panel upgrades, delivering reliable motor protection in automated production and power distribution environments.