Siemens 6ES5955-3LC13 Simatic S5 Power Supply Module

Siemens 6ES5955-3LC13 Simatic S5-135/155 Power Supply Module

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DescriptionThe 6ES5 955-3LC13 (PS955) power supply module is engineered to provide stable, regulated electrical power for Siemens Simatic S5-135U and...

SKU: 6ES5955-3LC13

Manufacturer: Siemens
Product No.: 6ES5955-3LC13
Product Type: Power Supply Module
Product Origin: Germany
Payment:T/T, Western Union
Weight: 5400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The 6ES5 955-3LC13 (PS955) power supply module is engineered to provide stable, regulated electrical power for Siemens Simatic S5-135U and S5-155U central controller racks and expansion chassis. This robust unit is designed for demanding industrial environments, ensuring consistent operation of backplane electronics, logic processing modules, and I/O bus interfaces by converting AC mains into reliable DC power.

Features

Selectable input voltage range: 115 VAC or 220 VAC at 50 Hz.
Regulated output: 18 Amp at 5 VDC for backplane and logic power.
Integrated battery backup support using the CA-6EW1000-7AA lithium battery to maintain RAM and real-time clock data during power loss.
Comprehensive protection features including overvoltage protection, short-circuit current limiting, and galvanic isolation.
Front-panel LED diagnostics for monitoring AC input and DC rail status.
Passive cooling design with thermal cutoff protection for sustained reliability.

Applications

This power supply is a critical component for legacy Simatic S5 automation systems, commonly utilized in continuous process industries such as petroleum refineries, thermal power generation, metallurgical processing, and large-scale mining operations.

Technical Specifications

Model	6ES5 955-3LC13 (PS955)
Input Voltage	115 VAC / 220 VAC (selectable)
Input Frequency	50 Hz
Output Current	18 Amp @ 5 VDC
Operating Temperature	0 to 60 deg C
Storage Temperature	-40 to 70 deg C
Relative Humidity	5% to 95% non-condensing

Installation Guidelines

Ensure the rack is fully powered down before inserting or removing the power supply module.
Verify the input voltage selector switch matches the local AC supply (115V or 220V) before energizing.
Ensure proper seating in the S5 rack backplane to maintain electrical contact and structural stability.
Maintain adequate clearance around the module to allow for passive cooling airflow.
Handle with care to prevent electrostatic discharge (ESD) damage to internal circuitry.
Regularly inspect the backup battery (CA-6EW1000-7AA) and replace according to the maintenance schedule to prevent data loss.

FAQ

Is this unit compatible with all S5 racks?

The 6ES5 955-3LC13 is specifically designed for the Simatic S5-135U and S5-155U series. Please verify your rack model and current requirements before installation.

What is the purpose of the battery compartment?

The front-accessible compartment holds a lithium battery to provide backup power for the CPU RAM and internal real-time clock, ensuring memory retention during main power outages.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.