Siemens 6ES5441-4UA11 Digital Output Module

This module drives actuators, contactors, and indicator lamps in control systems. The Siemens 6ES5441-4UA11 provides 16 transistor outputs for 24 V DC loads. It measures 232 mm in width and 75 mm in height. This unit weighs approximately 0.55 kg for standard rack mounting.

Technical Specifications Table

Parameter	Value
Product Model	Siemens 6ES5441-4UA11
Category	Digital Output Module
Number of Outputs	16 channels
Output Type	Transistor, source (PNP)
Output Voltage	24 V DC
Output Current	0.5 A per channel
Total Current	4 A maximum per module
Dimensions (W x H x D)	232 mm x 75 mm x 130 mm
Weight	0.55 kg
Connector Type	1 x 20-pin female screw terminal
Internal Components	16 x power transistors, 1 x optocoupler array
Electrical Isolation	500 V AC between outputs and backplane
Energy Storage	None (outputs turn off immediately on power loss)
Short Circuit Protection	Electronic, with thermal shutdown

Internal Design and Output Protection

This output module uses sixteen individual power transistors for switching. An optocoupler array provides electrical isolation between the CPU and field devices. The Siemens 6ES5441-4UA11 includes electronic short circuit protection on each channel. A thermal shutdown feature prevents damage during overload conditions. The module stores no energy for output retention after power-off. Consequently, all outputs reset to OFF automatically when the system loses power.

Installation and Wiring Guide

First, mount this module into any S5 rack slot except the CPU slot. Next, connect your 24 V DC supply to pins 1 and 20 on the front connector. Then, wire your load devices to the 16 output pins (2 through 17). Each output channel can sink up to 0.5 A of continuous current. Use a 1 A fast-blow fuse for external short circuit protection. The module displays output status via 16 green LEDs on the front panel. This unit works with all SIMATIC S5 CPU models and expansion racks.