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PRODUCT DESCRIPTION
6ES5951-7LB21 AC Rack Power Supply
Siemens 6ES5951-7LB21 is the PS 951 AC power supply for the documented SIMATIC S5-115H arrangement. It provides the control-system supply rails required by compatible legacy rack equipment.
The unit accepts rated 120/230 V AC and supplies a 5 V main output, a 5.2 V PG/OP output and an auxiliary 24 V output. Electronic short-circuit protection and the documented lithium backup arrangement support operation. Input selection, minimum loading and rack connections must follow the exact manual.
The unit accepts rated 120/230 V AC and supplies a 5 V main output, a 5.2 V PG/OP output and an auxiliary 24 V output. Electronic short-circuit protection and the documented lithium backup arrangement support operation. Input selection, minimum loading and rack connections must follow the exact manual.
BEFORE YOU BUY
Confirm the complete ac rack power supply
ACTUAL APPLICATIONS
Application context for 6ES5951-7LB21
6ES5951-7LB21 is a ac rack power supply for SIMATIC S5-115H PS 951. It supports compatible automation projects in pulp and paper, metals production, industrial manufacturing. Suitability depends on the configured system, connected interfaces and documented operating limits.
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01 · PULP & PAPER
Pulp Processing and Paper Processing
Pulp Preparation and ProcessingPaper Production and Converting -
02 · METALS PRODUCTION
Metal Processing and Rolling Processing
Steel Rolling Process ControlMetal Forming and Finishing -
03 · INDUSTRIAL MANUFACTURING
Manufacturing and Industrial Processing Control
Industrial Manufacturing Process AutomationAssembly Production and Quality Control
Technical specifications for 6ES5951-7LB21
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Product Model6ES5951-7LB21
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Product ParametersAC Rack Power Supply
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In stock10 units
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ManufacturerSiemens
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Rated mains input120/230 V AC
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Permitted mains ranges94–132 V / 187–264 V AC
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Input frequency range47–63 Hz
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Rated input currents0.55 A at 120 V; 0.33 A at 230 V
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Maximum inrush ratio15 × rated input current
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Inrush integral0.135 A²s
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Active power consumption44.8 W
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Main backplane output5 V DC, 3 A
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Minimum main output load0.3 A
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PG/OP output5.2 V DC, 1 A maximum
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Auxiliary supply output24 V DC, 0.2 A maximum
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Backup battery specificationLithium C, 3.6 V, 5 Ah
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Mains buffering at minimum load20 ms
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Isolation test voltage2700 V DC
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Power loss19.8 W
View all additional
Alternative Names
6ES5951-7LB21
SIMATIC S5-115H PS 951 AC Rack Power Supply
S5-115H PS 951 120/230 V AC rated mains input
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
Integrate 6ES5951-7LB21 ac rack power supply
Integrate 6ES5951-7LB21 only in the documented SIMATIC S5-115H PS 951 configuration. Match the installed interfaces and the engineered application before selecting this ac rack power supply.
The unit accepts rated 120/230 V AC and supplies a 5 V main output, a 5.2 V PG/OP output and an auxiliary 24 V output. Electronic short-circuit protection and the documented lithium backup arrangement support operation. Input selection, minimum loading and rack connections must follow the exact manual.
Use the applicable controlled instructions for SIMATIC S5-115H PS 951. Validate the assigned signals, communication or output behaviour and retain the accepted configuration for 6ES5951-7LB21.
Features:
- Rated mains input: 120/230 V AC
- Permitted mains ranges: 94–132 V / 187–264 V AC
- Input frequency range: 47–63 Hz
The 6ES5951-7LB21 ac rack power supply requires appropriate configuration before system integration and commissioning.
INTERCHANGEABILITY
Verify 6ES5951-7LB21 ac rack power supply
Confirm the complete 6ES5951-7LB21 identity and installed SIMATIC S5-115H PS 951 execution before replacement. Compare the connector arrangement and the technical values required by the existing project.
Record the ac rack power supply connections, project settings and associated accessories. Preserve the accepted configuration and isolate the affected circuits before exchange.
After fitting 6ES5951-7LB21, restore the verified configuration and test every affected function. Retain the identification, diagnostic results and final acceptance record for the SIMATIC S5-115H PS 951 equipment.
Features:
- Rated mains input: 120/230 V AC
- Permitted mains ranges: 94–132 V / 187–264 V AC
- Input frequency range: 47–63 Hz
The 6ES5951-7LB21 ac rack power supply requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: The linked files are Amikong-hosted reference documents. Match their product identity and scope to the supplied assembly, and consult the applicable manufacturer instructions before use. Accessories and additional documents are included only when expressly listed in the quotation.
Features:
- Verify document identity before procurement or installation
- Match the complete order to the manufacturer document scope
- Accessories are supplied only when listed in the quotation
Documentation for the 6ES5951-7LB21 ac rack power supply must be checked for document applicability before installation or commissioning.
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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
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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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 size
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Shipping weight1.60kg
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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 reference8504401990
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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
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Condition checked
Label and appearance -
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Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6ES5951-7LB21
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Which mains ratings can the PS 951 accept?
For 6ES5951-7LB21, the documented rated mains input is 120/230 V AC. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
What supply tolerances are specified for PS 951?
For 6ES5951-7LB21, the documented permitted mains ranges is 94–132 V / 187–264 V AC. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
What frequency range is allowed on the AC input?
For 6ES5951-7LB21, the documented input frequency range is 47–63 Hz. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
How do rated input currents differ at 120 and 230 V?
For 6ES5951-7LB21, the documented rated input currents is 0.55 A at 120 V; 0.33 A at 230 V. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
What maximum inrush multiple should be considered?
For 6ES5951-7LB21, the documented maximum inrush ratio is 15 × rated input current. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
What inrush integral is specified for PS 951?
For 6ES5951-7LB21, the documented inrush integral is 0.135 A²s. Compare this limit with the installed SIMATIC S5-115H PS 951 configuration. -
What identification supports ordering the SIMATIC S5-115H PS 951 spare?
Specify 6ES5951-7LB21, quantity and the installed SIMATIC S5-115H PS 951 arrangement. Include label and connector photographs, and identify any required accessories separately. -
Which incoming checks apply to the ac rack power supply?
Compare the 6ES5951-7LB21 label, connector condition and supplied accessories with the quotation. Verify the accepted SIMATIC S5-115H PS 951 configuration before replacing the installed item.
READY TO VERIFY YOUR PART?
Get a 6ES5951-7LB21 quote with price, lead time and revision check.
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