Overview
The Siemens 6ES5 930-8MD11 is a dedicated power supply module for the SIMATIC S5-100U programmable logic controller. This compact PS930 unit provides reliable, regulated 24V DC power essential for operating S5 series PLCs and their peripheral modules. Built to Siemens quality standards, it ensures stable operation in industrial automation environments.
Key Features
- Dual voltage input: 115V or 230V AC, single-phase
- Regulated 24V DC output at 1A capacity
- Compact form factor fits standard S5-100U systems
- Switching mode design for efficiency and thermal stability
- REACH-compliant design and German-manufactured quality
Technical Specifications
This power supply is engineered for continuous operation in industrial control cabinets. The module provides clean, filtered DC power required by S5 PLCs and discrete I/O modules. Standard industrial mounting and connectivity ensure drop-in replacement capability in legacy automation systems.
Typical Applications
- SIMATIC S5-100U processor power supply
- Legacy PLC system modernization and repair
- Industrial automation equipment refurbishment
- Control cabinet retrofits requiring original Siemens components
- Preventive maintenance and spare parts stocking
Compatibility & Replacements
The 6ES5 930-8MD11 is the original equipment power supply for S5-100U systems and carries Siemens part specifications. When sourcing replacements for legacy systems, authentic Siemens parts ensure compatibility with existing PLC configurations and maintain system integrity. Distributors may reference this module as the PS930 power supply unit.












