Allen-Bradley 700-HAX2A1-4 General Purpose Relay

The Allen-Bradley 700-HAX2A1-4, also cataloged as the 700-HAX2A1 General Purpose Relay, operates as a dedicated hardware component for interposing isolation and control switching within industrial panel enclosures. The electromechanical relay converts a 120 VAC 50/60 Hz coil control input into 2-pole 6 A switching execution across an 8-pin tube base pin-style terminal array, featuring a mechanical status indicator and LED power feedback.

Hardware Specifications

I/O Density Scaling & Deterministic Control Execution

Configured for plug-in mounting on octal socket bases, the 700-HAX2A1-4 interposing relay optimizes cabinet real estate to support I/O density scaling and deterministic switching execution within Allen-Bradley control system architectures. High dielectric insulation between the 120 VAC coil and field contacts suppresses transient electrical noise, preventing voltage spikes from coupling back into controller I/O modules. The fast electromechanical contact actuation enables reliable pilot duty control and isolated status feedback loops across distributed panels.

Frequently Asked Questions

Q: Can the 700-HAX2A1-4 relay be plugged into or removed from an octal socket while control power is applied?

A: Control power to the socket terminals must be de-energized prior to seating or unseating the relay. Hot-plugging under electrical load can induce arcing across the tube base pins, degrading terminal contact plating and socket retention force.

Q: How does the integrated LED indicator operate relative to the mechanical ON/OFF flag?

A: The internal LED connects across the 120 VAC coil input terminals to signal electrical energization, while the mechanical flag moves physically with the armature assembly to verify contact position independent of power status.

Field Installation Guidelines

1. Align the central guide key of the 8-pin tube base with the matching notch on a compatible Bulletin 700 octal mounting socket.
2. Push the relay module firmly into the socket base until the pin contacts engage completely and lock the retention clip over the top housing.
3. Wire the 120 VAC coil leads and field switching contacts to screw terminals using stranded copper conductors rated for 75 deg C.
4. Verify that total load currents across the 2-pole contacts remain within the continuous 6 A resistive rating to prevent contact erosion.
5. Bond the socket assembly DIN rail directly to the main control panel ground bar using a low-impedance grounding strap.