Allen-Bradley 156-A10BA3 Contactor

The Allen-Bradley 156-A10BA3 Solid State Contactor is a 3‑pole device rated for 10 A on three‑phase loads. It accepts line voltages from 24 to 480 V AC and control voltages from 24 to 230 V AC/DC, enabling direct compatibility with common PLC outputs and control circuits. As part of Rockwell Automation's 156 family, this solid-state contactor provides electronic switching for three‑phase motors and other balanced loads, offering maintenance-free operation compared with electromechanical relays at similar current levels. Typical applications include start/stop control of small to moderate three‑phase motors, fans, pumps, conveyors, and other panel-mounted loads in industrial automation, where a compact, single‑unit solution supports straightforward wiring and reliable performance. The 156-A10BA3 is widely used in automation projects requiring a robust 3‑phase switching device with universal line and control voltage compatibility.