Allen-Bradley 1745-E105 Programmable Logic Controller Module

Allen-Bradley 1745-E105 is a SLC 100-series relay-output expansion unit that adds dedicated relay outputs to an existing PLC, enabling larger control I/O for a system by pairing with an SLC 100 processor (and in some configurations the SLC 150). The module provides 12 relay contact outputs and contains 0 input terminals, designed to drive external relays or actuated devices. Each output is rated for switching loads in the range of 10-250 V AC (50/60 Hz) or 10-125 V DC, and the unit draws up to 12 VA from the backplane. The 1745-E105 requires a 85-132/170-265 VAC, 50/60 Hz supply for its operation. With a compatible processor, expansion modules like the 1745-E105 help extend total I/O to as many as 112 circuits in a single SLC 100 system. This expansion unit is specifically intended for PLC automation tasks that require additional relay outputs rather than input sensing, providing a straightforward path to control relays, contactors, and other electromechanical devices in industrial equipment.