Product Categories

New Products

Siemens SIMATIC S5-115U/H

6ES5951-7LB21

Price and Availability Inquiry

The Siemens 6ES5951-7LB21 is a PS 951 Power Supply Module in the SIMATIC S5-115U/H family.

Sales SupportDirect specialist contact

QuotationCurrent commercial details

DeliveryDHL · FedEx · UPS

Fast quotation support Send the model and required quantity directly to Lisa Lin using the contact options on the right.

Your AMIKON Contact

LL Lisa LinSales Specialist

WhatsApp +86 18965423501

Email sales7@amikon.cn

Request a Quote on WhatsApp Send Email Inquiry

For faster service, please include the model 6ES5951-7LB21 and required quantity in your inquiry.

SIEMENS 6ES5951-7LB21

Technical Specifications

Model-specific identification and technical data for 6ES5951-7LB21.

01Product IdentityS5-115U/H module identity

ManufacturerSiemens

Article Number6ES5951-7LB21

DesignationPS 951 Power Supply Module

System FamilySIMATIC S5-115U/H

02AC InputInput voltage and frequency

Rated Input Voltage120 / 230 V AC

Permissible Input Voltage94–132 / 187–264 V AC

Permissible Frequency47–63 Hz

Rated Input Current0.55 / 0.33 A

03DC OutputsOutput rails and currents

Main Output5 V DC ±1.5%

Main Output Current0.3–3 A

PG/OP Output5.2 V DC ±1.5%, max. 1 A

Auxiliary Output24 V DC ±5%, max. 0.2 A

04Power CharacteristicsLoad and inrush ratings

Mains Buffering≥20 ms

Active Power44.8 W

Module Power Loss19.8 W typ.

Inrush CurrentMax. 15 × rated input current

SIEMENS 6ES5951-7LB21 PRODUCT SUPPORT

Frequently Asked Questions

PS 951 supply matching, electrical ratings and S5-115U/H ordering checks.

Which SIMATIC S5 racks use this PS 951 supply?

Siemens designates 6ES5951-7LB21 as a PS 951 power supply for S5-115U/H. Check the rack and the installed supply label before replacement.

Which mains ratings must be matched at installation?

The Siemens catalog specifies 120/230 V AC input. Confirm the site supply and the original module variant before energizing the rack.

How much 5 V power can this unit provide?

Its cataloged output is 5 V DC at 3 A. Compare the rack load with that rating when replacing the supply.

Can this version provide backup-battery functionality?

No. Siemens explicitly identifies 6ES5951-7LB21 as the PS 951 version without a backup battery.

Does Siemens identify a direct replacement order number?

No. The official article record says the product was deleted without replacement; a different S5 supply should not be assumed interchangeable.

How should this supply be specified on a spare-part request?

Use the full 6ES5951-7LB21 order number and state PS 951, S5-115U/H, 120/230 V AC input and 5 V DC/3 A output.

Which lifecycle status affects maintenance planning?

Siemens lists the article as discontinued, with end of product lifecycle from 1 October 2022. Check actual stock and the installed system before planning a replacement.

Order Fulfilment

Payment and Worldwide Delivery

AMIKON coordinates product verification, commercial confirmation, packing and international shipment for industrial automation parts. Each order is handled according to the confirmed model, quantity and delivery destination.

Order Confirmation

Model, part number, quantity, availability, lead time and payment terms are confirmed in the formal quotation or proforma invoice.

Product Preparation

The item reference is checked before dispatch. Packaging is selected to protect industrial components during international transport.

International Shipping

Shipment can be arranged through DHL, FedEx or UPS according to the destination, parcel size and confirmed order requirements.

Dispatch and Tracking

Dispatch information and the available tracking reference are shared after the shipment has been collected by the selected carrier.

AMIKON Service Standards

Support at Every Stage of Your Order

Clear assistance from initial product identification through dispatch and after-sales communication.

Product IdentificationThe manufacturer, complete model and part-number details are reviewed before quotation.

Dedicated Sales ContactLisa Lin provides quotation and order communication through email and WhatsApp.

Order DocumentationCommercial, packing and shipment details are supplied according to the confirmed order.

After-Sales CommunicationFor support, provide the order reference, product label, fault description and clear photos.

Pre-Dispatch VerificationThe product label, model reference, quantity and visible condition are checked against the confirmed order before packing.

Global Logistics CoordinationInternational express or freight arrangements are coordinated according to the destination, shipment size and confirmed delivery terms.

Important delivery information

Product availability, dispatch date, freight cost and delivery time depend on the confirmed order and destination. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order. Please contact AMIKON for current commercial and shipping details.

AMIKON Professional Services

Warranty, Sourcing and Global Export Support

With 20 years of experience in industrial automation, AMIKON supplies discontinued and hard-to-find DCS, PLC and TSI spare parts to customers worldwide.

01 · WARRANTY

12-Month Product Warranty

Products supplied by AMIKON include a standard 12-month warranty. Warranty handling is based on the confirmed order, product label, fault information and supporting photos or videos.

02 · SPECIALIST SOURCING

Discontinued and Hard-to-Find Parts

Our sourcing service focuses on industrial automation DCS, PLC and TSI spare parts, including obsolete, discontinued and scarce models required for maintenance and replacement projects.

03 · GLOBAL EXPORT LOGISTICS

One-Stop International Shipping

AMIKON can coordinate domestic export customs procedures and arrange international express or sea freight. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order.

04 · TECHNICAL INFORMATION

Model and Specification Support

We assist customers with model identification, specification review, compatibility checks and Datasheet or manual searches. Support also includes distinguishing earlier and later model versions and checking whether a submitted model reference is complete and correctly written.

05 · PRE-DISPATCH CHECK

Product Verification Before Shipment

The product label, complete model, part number, quantity and visible condition are reviewed against the confirmed order before packing.

06 · INDUSTRIAL PACKAGING

Secure Packing for International Transit

Packaging is selected according to the component type, shipment size and transport method to support safe international handling.

07 · ORDER DOCUMENTATION

Commercial and Shipping Documents

Commercial invoices, packing lists and available origin information can be prepared according to the confirmed order and destination requirements.

08 · AFTER-SALES SUPPORT

Responsive Order Follow-Up

For order support, customers can provide the order reference, product label, issue description and clear photos for review by the AMIKON team.

Need help identifying a spare part?Send the complete manufacturer, model, part number and clear product-label photos to Lisa Lin.

WhatsApp Lisa Email Support

MULTI-BRAND AUTOMATION PARTS

Recommended Industrial Models

Explore selected control, communication and condition-monitoring models for industrial requirements.

Need a quotation?Send the complete model and required quantity to AMIKON.

PRODUCT FAMILYSIEMENS

6SL3353-6TG41-7CA3

6SL3120-1TE21-0AD0

A5E03712588

PRODUCT FAMILYSIEMENS

6SE7026-0HF84-1JC0

A5E00314745

A5E31250567

PRODUCT FAMILYSIEMENS

6SL3352-6TG37-4AA3

6RY1803-0CA11

A5E03712834

PRODUCT FAMILYBENTLY NEVADA

330703-00-80-10-02-00

330704-000-030-10-02-00

330703-000-026-50-01-CN

PRODUCT FAMILYBENTLY NEVADA

330704-000-040-10-02-00

330703-000-026-50-02-CN

330704-000-050-10-01-00

PRODUCT FAMILYBENTLY NEVADA

330703-000-030-10-02-00

330704-000-050-10-01-CN

330703-000-036-10-02-00

PRODUCT FAMILYOTHER BRANDS

VFS3200-5FZ

SY7120-5DZ-02T

PB5322

PRODUCT FAMILYOTHER BRANDS

RPU1006

XT0BXDIND

FS-M2P

PRODUCT FAMILYOTHER BRANDS

RF1V-3A1B-D24

HBL2310SW

FAZ-C7/1-NA-SP

Request model availabilitySend the complete model and required quantity to AMIKON for quotation.

International enquiriesShipping options and lead time are confirmed according to destination and order details.

Hot Tags : 6ES5951-7LB21 Siemens 6ES5951-7LB21 PS 951 Power Supply Module SIMATIC S5-115U/H 6ES5951-7LB21 spare part 6ES5951-7LB21 supplier

Leave A Message

If you have any questions please do not hesitate to contact us, we are 24 hours online for you to answer!

Other Hot-Sellings

Siemens 6ES5951-7LB21 PS 951 Power Supply Module

6ES5951-7LB21

20 Years of Experience in Industrial Automation Supply

6ES5951-7LB21

Technical Specifications

Frequently Asked Questions

Which SIMATIC S5 racks use this PS 951 supply?

Which mains ratings must be matched at installation?

How much 5 V power can this unit provide?

Can this version provide backup-battery functionality?

Does Siemens identify a direct replacement order number?

How should this supply be specified on a spare-part request?

Which lifecycle status affects maintenance planning?

Payment and Worldwide Delivery

Order Confirmation

Product Preparation

International Shipping

Dispatch and Tracking

Support at Every Stage of Your Order

Warranty, Sourcing and Global Export Support

12-Month Product Warranty

Discontinued and Hard-to-Find Parts

One-Stop International Shipping

Model and Specification Support

Product Verification Before Shipment

Secure Packing for International Transit

Commercial and Shipping Documents

Responsive Order Follow-Up

Recommended Industrial Models

Related Products