Siemens 6ES5 451-4UA13 Digital Output Module

Siemens 6ES5 451-4UA13 Digital Output Module is a 32-channel floating digital output card for SIMATIC S5 systems. The compact U version provides 24 V DC outputs rated to 0.5 A per channel, suitable for energizing loads such as relay coils, lamps, and other 24 V devices from the PLC. Each output is isolated (floating), offering straightforward wiring and flexible panel layout within traditional S5 backplane assemblies. This module belongs to the 6ES5 family of digital I/O and is designed for use in SIMATIC S5 automation cabinets, delivering discrete, logic‑level control of field devices. With 32 independent outputs, it enables moderate I/O expansion without external drivers, while operating at a standard 24 V DC control voltage and maintaining 0.5 A per output, making it a practical choice for compact, older‑generation Siemens automation setups.