Allen-Bradley 100-C12DJ400 Magnetic Contactor

Allen-Bradley 100-C12DJ400 Magnetic Contactor is a compact IEC-style control device used to switch AC electrical loads in industrial automation. The coil is 24 V DC with an integrated diode (DJ) for transient suppression, reducing the need for external snubbers. It is rated for 12 A of load current and supports up to 400 VAC on the power contacts, making it suitable for starting and running motors, pumps, fans, and other inductive loads in control panels. The contactor employs robust copper alloy contacts designed for frequent switching and long life in commercial environments. It uses screw-terminal connections for secure, durable wiring and is compatible with common accessories such as auxiliary contact blocks and mechanical interlocks to expand control logic. The 100-C family is known for modular, IEC-style mounting and standardized dimensions, enabling straightforward substitution and integration into existing panel layouts. Typical applications include conveyor lines, machine tools, process equipment, and HVAC or pumping systems in manufacturing settings, where reliable mid-power switching and compact form factor are priorities.