ABB EH550 Contactor

ABB EH550 Contactor is a heavy-duty three-pole, three-phase motor-contactor designed to switch large electrical motors and other high-current loads in industrial control panels. This model is rated for up to 600 A at 600 V and configured for 3-pole operation to control three-phase circuits, with a 24-volt coil that accepts standard low-voltage control signals. It includes an auxiliary contact block, enabling signaling, interlocking, or feedback within control schemes without needing a separate relay. As part of ABB’s EH-series, the EH550 shares common mounting and accessory compatibility with other EH contactors, making it straightforward to pair with protective devices and control accessories in a unified system. The combination of high current rating, elevated voltage handling, and integrated auxiliary contacts makes this unit well-suited for demanding applications such as pumps, compressors, fans, conveyors, and other heavy-load machinery where reliable, repeated switching of a three-phase motor is required in industrial environments.