Allen-Bradley 700-HAX2A1-4 Relay Tube Base On Off Indicator

The Allen-Bradley 700-HAX2A1-4 is a general‑purpose tube-base relay with a built‑in ON/OFF indicator, designed for plug‑in installation in legacy 700‑series control panels. This non‑latching, two‑pole, double‑throw (DPDT) device uses a 120 VAC coil and is rated for 6 A of switching, making it suitable for signaling, interlock circuits, and other control duties in industrial equipment. It mounts in a tube‑base socket with pin terminals and employs bifurcated contacts with gold overlay to ensure reliable, low‑resistance operation. The “‑4” suffix denotes the LED ON/OFF indicator option, providing a clear visual status alongside the circuit’s electrical signals and helping operators confirm coil energization at a glance. Typical applications include status signaling, pilot duty signaling in control logic, and interlock arrangements in machines that still rely on plug‑in 700‑series relays, with the compact tube‑base form factor enabling straightforward replacement and integration in panels that use older relay architectures.