Allen-Bradley 156-A30BB2 Contactor

Allen-Bradley 156-A30BB2 Solid State Contactor is a 30 A device designed to switch AC loads in industrial automation, driven by a 5–24 V DC control signal. It accepts line voltages from 24 to 480 V AC and is configured as a dual-phase (two-pole) arrangement within the 156 Solid-State Contactor family. Identified by Allen-Bradley part number 156-A30BB2, this unit is commonly documented by Rockwell Automation distributors and catalogers as a 156-A30BB2 solid-state contractor. With a 30 A current rating and a wide 24–480 V AC line-voltage range, it supports mid-range loads across diverse supply conditions encountered in control panels and automation cabinets. The coil input is specified as 5–24 V DC, enabling control from standard automation controllers and PLCs that output low-voltage DC signals. As part of the Rockwell Automation ecosystem, it is designed for integration with compatible control circuits and enclosure wiring, and users should reference the official datasheet for precise mounting, terminal assignments, and safety guidelines to ensure proper installation.