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PRODUCT DESCRIPTION
6ES5955-3LF44 S5 rack power supply
Siemens 6ES5955-3LF44 is a S5 rack power supply in the SIMATIC S5-155U programmable controllers. It is used to supply the specified operating power to the connected automation hardware.
Its documented configuration includes module function of Central rack power supply, input voltage of 24 V DC, input range of 20 to 30 V DC, and output voltage of 5 V DC. During operation, the S5 rack power supply converts and distributes the specified supply voltage to the connected hardware.
Its documented configuration includes module function of Central rack power supply, input voltage of 24 V DC, input range of 20 to 30 V DC, and output voltage of 5 V DC. During operation, the S5 rack power supply converts and distributes the specified supply voltage to the connected hardware.
BEFORE YOU BUY
Confirm the complete S5 rack power supply
ACTUAL APPLICATIONS
Where 6ES5955-3LF44 operates in industrial systems
Siemens official documentation supports these system applications when the module is correctly configured and integrated.
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01 · GENERAL MANUFACTURING
Production Line Instrument Power Systems Operations
Machine supply systemsConveyor zones and inspection stationsIndustrial switches and communication gateways -
02 · WATER & WASTEWATER
Pumping Station Control Power Systems Operations
Utility power systemsChemical dosing skids and mixer controlsBackwash controls and solenoid manifolds -
03 · TRANSPORTATION INFRASTRUCTURE
Depot Automation and Service Power Systems
Facility control powerLighting controls and emergency panelsDrainage pumps and fire alarm interfaces
Technical specifications for 6ES5955-3LF44
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Product Model6ES5955-3LF44
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Product ParametersS5 rack power supply
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In stock1 unit
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ManufacturerSiemens
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Module FunctionCentral rack power supply
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Input Voltage24 V DC
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Input Range20 to 30 V DC
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Output Voltage5 V DC
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Output Current40 A class
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Auxiliary Output24 V DC monitor output
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Rack FamilySIMATIC S5-155U
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Module WidthS5 central-rack format
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Cooling MethodForced-air rack cooling
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Status IndicationFront-panel LEDs
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Protective FunctionElectronic overcurrent shutdown
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Connector SystemS5 rack backplane
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Operating ClassIndustrial control cabinet
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Replacement BasisExact 6ES5955-3LF44 code
View all additional
Alternative Names
6ES5955 3LF44
SIMATIC S5-155U programmable controllers S5 rack power supply
Siemens S5 rack power supply
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
SYSTEM INTEGRATION
Match 6ES5955-3LF44 to the installed SIMATIC S5-155U programmable controllers
Siemens 6ES5955-3LF44 is a S5 rack power supply used in the SIMATIC S5-155U programmable controllers. Use 6ES5955-3LF44 as the S5 rack power supply in the SIMATIC S5-155U programmable controllers. Confirm input voltage 24 V DC and the exact installed arrangement before connection.
Record the product label, module width (S5 central-rack format), cable identification, grounding and adjacent hardware before removing the installed unit. Confirm 5 v dc, 40 a class, the exact mechanical position and the approved system configuration before connection.
After installation, verify operating class (Industrial control cabinet), check diagnostics and test the affected function before returning the equipment to service. Use qualified personnel, keep the applicable manufacturer instructions at the work location and retain the measured results with the equipment service record.
Features:
- Exact identity: 6ES5955-3LF44
- Product class: S5 rack power supply
- Family: SIMATIC S5-155U programmable controllers
The Siemens 6ES5955-3LF44 requires documented system integration before energising the equipment.
REPLACEMENT CONTROL
Verify the complete 6ES5955-3LF44 identity before exchange
Replace 6ES5955-3LF44 only after matching the full article identity, S5 rack power supply, installed simatic s5-155u and documented system role. A similar family name or physical outline does not establish interchangeability.
Before removal, photograph the product label, mounting position, forced-air rack cooling, cable routing, shields, earth connections and adjacent assemblies. Preserve the approved configuration or parameter backup for recovery.
After installation, restore all controlled settings and complete exact 6es5955-3lf44 code. Review status indications and diagnostics, test the affected function at a safe operating point, and record the final maintenance acceptance evidence.
Features:
- Exact identity: 6ES5955-3LF44
- Connection: Forced-air rack cooling
- Test: Exact 6ES5955-3LF44 code
The Siemens 6ES5955-3LF44 requires documented replacement verification before energising the equipment.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Official documents are provided through manufacturer links. Accessories, manuals, cables, calibration data, software and certificates are included only when listed in the quotation.Features:
- Technical values prepared for 6ES5955-3LF44
- Installation checks matched to SIMATIC S5-155U programmable controllers
- Exact Siemens identity required before service
Documentation for Siemens 6ES5955-3LF44 must match the installed equipment and complete product identity; confirm manual applicability before service.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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01
Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed sizeConfirm before dispatch
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Shipping weightConfirm before dispatch
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8504409999
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OriginGermany
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
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Tracking supplied
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Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6ES5955-3LF44
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Which input voltage must engineering verify for 6ES5955-3LF44?
For 6ES5955-3LF44, verify the documented input voltage is 24 V DC and confirm the remaining nameplate limits before connection. -
How should maintenance document the module width before removing 6ES5955-3LF44?
Photograph the module width, which is S5 central-rack format, plus terminal labels, cable routing, shields and adjacent hardware for 6ES5955-3LF44. -
What does the module function value mean when sourcing 6ES5955-3LF44?
The exact documented value for 6ES5955-3LF44 is Central rack power supply; use it with the full article code when checking the supplied configuration. -
Which output voltage limit applies during commissioning of 6ES5955-3LF44?
Apply 5 V DC for output voltage on 6ES5955-3LF44; also confirm protection, polarity and the approved startup procedure. -
Can a distributor quote 6ES5955-3LF44 from a shortened code?
No. Quote the complete identity 6ES5955-3LF44, manufacturer, quantity, destination, product photos and required documentation scope. -
What receiving inspection is appropriate for the S5 rack power supply 6ES5955-3LF44?
Inspect 6ES5955-3LF44 for the full label, connector condition, revision markings, shipping damage and consistency with SIMATIC S5-155U programmable controllers. -
Which system record should be retained after replacing 6ES5955-3LF44?
Retain the incoming inspection, original connection record, configuration backup, measured results and service approval for 6ES5955-3LF44. -
How is the restored S5 rack power supply function tested for 6ES5955-3LF44?
Check status indications, diagnostics and the affected S5 rack power supply response, then record the final result against 6ES5955-3LF44.
READY TO VERIFY YOUR PART?
Get a 6ES5955-3LF44 quote with price, lead time and revision check.
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