Allen-Bradley 1771-A4B PARKER Provides the structural base for

Provides the structural base for E300 systems

Cooling Method: Internal forced-air fan

7 mA per point

and upgrades

offering a robust

Allen-Bradley 1771-A4B PARKER Provides the structural base forAllen Bradley 1771 A4B Overview The Allen Bradley 1771 A4B is a 16 slot I O chassis for use in PLC 5 systems. It provides a backplane for mounting up to 16 I O, communication, or processor modules from the 1771 series. Designed for use with both AC and DC power supplies, this chassis is essential for flexible and scalable industrial control system configurations. Key Features 16 slot backplane for Allen Bradley 1771 series modules Supports PLC 5