Siemens 6ES5456-4UA11

Siemens 6ES5456-4UA11 is a SIMATIC S5 digital output module with 16 outputs (16Q) designed for control of AC loads in legacy Siemens automation systems. The module provides two isolated banks of eight outputs, enabling independent control while maintaining electrical separation between groups, and it is specified for loads at 115/240 VAC with a broad operating range of 88–264 VAC. Its physical footprint is 190 mm in height, 260 mm in length, and 50 mm in width, and it weighs about 0.68 kg. This part belongs to the SIMATIC S5 456 family and is documented as discontinued, with a lifecycle end date of April 1, 1999. Electrical switching characteristics for resistive/inductive loads allow currents from 50 mA up to 2 A per channel, with a maximum aggregate of 6 A across any four outputs under ventilated conditions. Typical applications include interfacing an S5 controller with relays, coils, contactors, or other 115/240 VAC devices, making it a suitable option for older installations that require a direct 16‑channel, two‑bank output interface compatible with the 6ES5456 family.