The ABB AF400-30 is a three‑pole, block‑type industrial contactor in the ABB AF series. It is designed for reliable control and switching of three‑phase motors and general power circuits in industrial or commercial installations. The contactor uses an electronically controlled coil (wide‑range) which supports a variety of control voltages (AC or DC), improving tolerance to control‑voltage fluctuations and enhancing operational reliability. It is suited for motor starting, isolation, bypass, distribution, and power‑circuit switching up to 1000 V AC. The modular design allows add-on auxiliary contact blocks and accessories, making it flexible for integration in motor control centers (MCC), automation panels, or other switchgear assemblies.