Allen-Bradley 700-HF34224-4 Industrial Control Relay

Allen-Bradley 700-HF34224-4 is a general-purpose miniature square-base control relay from Rockwell Automation’s 700-HF family. It features four Form-C contacts (4PDT) for switching multiple circuits from a single coil, making it suitable for sequencing, interlocking, and multi-loop control in industrial panels. The coil operates at 24 V AC with a standard 50/60 Hz supply, enabling reliable energization from common AC control systems. The -4 suffix indicates an integrated pilot light, providing a visual indication when the coil is energized to aid troubleshooting and monitoring of start/stop signals. Designed for plug-in mounting, this relay fits compatible 700-HF sockets, allowing straightforward replacement or expansion within existing control architectures. Typical applications include machine control circuits and general automation tasks that require multiple independent contacts driven by a single 24 VAC control coil, such as coordinating interlocks, gating signals between control and power sections, and supporting compact control logic in industrial equipment. As part of the 700-HF line, it offers a compact, easy-to-integrate solution for compact control relays in legacy and modernized automation environments.