ABB ESB 20-11 Installation Contactor is a 1P (single-pole) switch rated for 20 A at 250 V, intended for control circuits in electrical panels and equipment. It uses a coil rated for 100–120 V at 50/60 Hz to energize the contactor. This IEC 31095-compliant device is designed for installation as a compact, single-pole switching solution in industrial electrical installations.
