Type and function on the contactor line
The A1A020TW is a Type Thermal Magnetic contactor — a 3-pole unit that combines overload protection and switching in one device, sized for motor or resistive loads within the A1A 100 TMF 20-300 range. It is an ABB-branded contactor, sitting in the Contactors category, intended for panel-mount integration in motor-control or distribution circuits.