A contactor is a type of relay (electrically operated switch) with high power rating (current rating and voltage rating). Contactors usually refer to devices switching more than 15 amperes or in …

A contactor is an electrically controlled switch used for switching a power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much …

Aug 8, 2025 · Perfect for electricians, automation enthusiasts, and hobbyists, this article breaks down how these devices work, where they’re used, and how to select and connect them for …

Essentially a heavy-duty version of a relay, a contactor is typically controlled by a circuit that has far less power than a switched circuit.

Learn what a contactor is, how it works, and where it's used in electrical systems. A clear guide to understanding contactors in industrial automation and control circuits.

Jan 30, 2023 · A contactor is an electrically controlled switching device, designed for repeatedly opening and closing a circuit. Contactors tend to be used for higher current-carrying …

Mar 17, 2021 · A contactor is a component used to switch an electrical circuit on or off. It is considered to be part of the relay family, but the main difference is that they are used for …

What is an Electrical Contactor? An electrical contactor is an electrically controlled switch used to manage and control high-current circuits. It operates by opening and closing contacts to switch …

A contactor is an electrically controlled switch used to turn high-power electrical devices—such as motors, pumps, and lighting systems—on and off. It operates using an electromagnetic coil to …

Jun 12, 2025 · A contactor is a high-power electrical switch used to safely control devices like motors, lighting, and heating with a low-voltage control signal (e.g. from a PLC).