Siemens

Siemens 6ES5955-3LC41 SIMATIC S5 Power Supply Module

SKU 6ES5955-3LC41

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: Siemens

  • Product No.: 6ES5955-3LC41

  • Country of origin:Germany

  • Product Type: Industrial Power Supply

  • Barcode: 85389091

  • Payment: T/T, Western Union

  • Weight: 6220g

  • Dimensions: 33.70cm x 45.80cm x 11.30cm

  • Shipping port: Xiamen

  • Warranty: 12 months

The 6ES5955-3LC41 is a high-capacity power supply module from the SIMATIC S5 family, specifically engineered for the S5-135U/155U and EU 183/185U programmable controller systems. This module serves as a central power source, converting standard line voltage into the stable 5V DC output required for CPU and I/O module operation. With an output current rating of 18A, it is designed to handle the power demands of larger, more complex legacy automation configurations.

Features

  • Series: SIMATIC S5 (135U/155U)
  • Function: Central power supply module
  • Input Voltage: Supports 120V / 230V AC
  • Output: 5V DC at 18A
  • Compatibility: Designed for S5-135U/155U and EU 183/185U central controllers
  • Status: Obsolete (Successor: 6ES5955-3LC42)

Applications

  • Powering legacy SIMATIC S5 rack-based automation systems
  • Maintaining continuous operation in established manufacturing lines
  • Control cabinet energy distribution for large-scale automation architectures
  • Retrofitting or component replacement in existing S5-135U/155U setups

Technical Specifications

Parameter Specification
Brand Siemens
Model 6ES5955-3LC41
Range Simatic S5
Subrange S5-135/155
Product Type Power supplies
Output 5V DC / 18A
Input 230V / 120V AC
Weight 6.22 kg
Dimensions 33.70 x 45.80 x 11.30 cm
Commodity Code 85389091
Export Control (ECCN) N
Product Phase Obsolete

Installation Guidelines

  • Module Seating: Ensure the power supply is firmly seated in the dedicated power supply slot of the S5 rack. The module is heavy (6.22 kg); verify that the rack mounting frame is secure before insertion.
  • Input Voltage Selection: Confirm the voltage jumper or switch settings match your local facility power (120V or 230V AC) before energizing.
  • Ventilation: These units generate significant heat. Maintain the specified clearances above and below the rack to allow for natural convection cooling.
  • Connections: Use appropriately rated cables for the AC input and ensure the 5V DC backplane connections are clean and free of corrosion.
  • Maintenance: As this is an obsolete component, check for signs of aging in electrolytic capacitors if utilizing surplus or long-term stored units.

FAQ

Is the 6ES5955-3LC41 compatible with newer S7 systems?
No, this power supply is specifically designed for the legacy SIMATIC S5-135U/155U rack systems and is not compatible with modern SIMATIC S7 controllers.

What is the successor model to this power supply?
The official successor model is the 6ES5955-3LC42.

What are the input voltage requirements for this module?
The module supports standard input voltages of 120V AC or 230V AC.

Does the weight of 6.22kg require special handling?
Yes, due to its weight and size, ensure the rack support structure is capable of holding the module securely and use proper manual handling techniques during installation.

View all FAQs →

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  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Color pattern
Greyish White
Country of origin
Germany
Power source
AC-powered

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