Siemens 6ES5103-8MA02 Processor Module

Technical Overview

The Siemens 6ES5103-8MA02 is a central processing module for the SIMATIC S5-101U programmable controller series. This unit executes the user program and coordinates all system operations. It includes a built-in power supply that simplifies the overall system design. The module provides 2 KB of RAM memory with battery backup for reliable program storage.

Technical Specifications

Parameter	Specification
Manufacturer	Siemens
Model Number	6ES5103-8MA02
Product Type	Processor Module / CPU
System Compatibility	SIMATIC S5-101U
Memory Type	RAM with battery backup
Memory Capacity	2 KB
Power Supply	Integrated (built-in)
Programming Language	STEP 5
Battery Type	3.6V lithium
Battery Life	Approx. 5 years
Power Consumption	10 W (typical)
Dimensions	233 x 37 x 268 mm
Weight	0.5 kg
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Humidity	5% to 95% RH (non-condensing)
Certifications	CE, UL, CSA
Country of Origin	Germany

Key Features

All-in-One Design – The integrated power supply reduces panel space and simplifies installation.

Battery-Backed Memory – The lithium battery preserves user programs during power interruptions.

Compact Footprint – The module fits into small control cabinets with limited space.

STEP 5 Programming – Users can program the controller using the standard Siemens language.

Reliable Operation – The module withstands industrial environments with wide temperature tolerance.

Applications

The Siemens 6ES5103-8MA02 suits small to medium-scale automation systems, machine control, and simple process automation. It is ideal for conveyor systems, packaging lines, and basic manufacturing tasks.