WEG MPW40-3-U020 Manual Motor Protector

The WEG MPW40-3-U020 manual motor protector is a three-pole, thermal-magnetic device used in industrial motor control to supply overload and short-circuit protection for three-phase motors. This compact assembly features a rotary manual operator for reliable manual motor disconnect and can be mounted on a DIN rail or panel, with screw clamp terminals for secure wiring. It offers an adjustable trip range of 16–20 A and includes phase loss sensitivity to help protect interconnected equipment. Ideal for motor starters, conveyor systems, pumps, compressors, industrial ventilation, and HVAC equipment, the MPW40-3-U020 is designed for motor control centers and automation panels requiring dependable motor protection and manual isolation. It is industrial-duty rated and suitable for branch motor circuit protection and isolation in machinery such as pumps, fans, conveyors, compressors, and other automation equipment. Common replacements include Allen-Bradley 140M Motor Protector, Siemens Sirius Motor Starter Protector, and Schneider Electric GV2 Motor Circuit Breaker.