About Siemens parts sourcing

Siemens is the most common automation brand on production lines, and the category where refurbished and counterfeit parts are most concentrated. We do not hold stock: we verify the full order number, version, firmware, packaging and batch before quoting, and we handle current and discontinued modules alike.

We are not a brand-authorised distributor and we do not rely on owned stock. We confirm part number, condition and availability before quoting; after confirmation we consolidate by project or container and ship with full export documentation.

  • ✓Sourced by part number — version, firmware, coil voltage and interface configuration checked
  • ✓Condition stated upfront — new, refurbished or pulled, declared at quotation stage
  • ✓Consolidated export — multi-brand consolidation, labelling, packing and full documents

Siemens categories we source

Send us a category or a full part number. These are the ranges we handle most often.

PLC & I/O

S7-1200, S7-1500, S7-300 and S7-400 CPUs, I/O modules, ET 200 distributed I/O and communication processors.

HMI & Panels

KTP, TP and Comfort Panels, including older ProTool-era units.

Drives

SINAMICS G120, G130 and S120, plus the discontinued MM4 series.

Instrumentation & Cables

Pressure and temperature transmitters, PROFINET / PROFIBUS cables and connectors.

Common part numbers and sourcing scope

The numbers below are examples only and do not indicate stock. Send any other reference directly.

Part NumberDescription
6ES7214-1AG40-0XB0S7-1200 CPU 1214C DC/DC/DC
6ES7315-2EH14-0AB0S7-300 CPU 315-2 PN/DP
6ES7321-1BL00-0AA0SM 321 digital input, 32 points
6ES7155-6AU01-0BN0ET 200SP interface module
6AV2123-2GB03-0AX0KTP700 Basic touch panel
6SL3210-1KE21-3UF1SINAMICS G120C drive
6XV1840-2AH10PROFINET industrial Ethernet cable
6ES7972-0BA12-0XA0PROFIBUS DP connector

Always confirm against the machine nameplate or your BOM. One part number can have several revisions; we check before quoting.

Siemens obsolete and alternative parts

The S5 family, part of the S7-300 range and the MM4 drives are discontinued and no longer supplied by the manufacturer. We locate parts through channel remaining stock and decommissioned equipment, state new, refurbished or pulled condition on the quotation, and propose parameter-matched alternatives for your engineers to confirm.
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Obsolete part search

Channel remaining stock, regional distributor inventory and decommissioned equipment, with condition confirmed.

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Parameter-matched alternatives

Wiring, parameter and mounting differences documented for your engineers to approve.

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Condition and photos

Photos and inspection records before dispatch. Refurbished or pulled parts are never quoted as new.

How buying works

This brand page is an entry point. Delivery follows the same sourcing process.

1

Send the list

Brand, full part number, quantity and target date.

2

Source each line

Condition, revision and availability checked.

3

Line-item quotation

Reply within 24 hours, obsolete and alternative lines flagged.

4

Verify and inspect

Authenticity checks, visual and functional inspection, photos.

5

Consolidate and document

Packing, labelling and export documentation.

6

Ship and follow up

Courier, air or sea freight tracking with exception handling.

Send us your Siemens part list

Paste part numbers or upload a BOM. You get a line-item quotation and lead-time advice within 24 hours.

Phone:86 13853276901

Email:sales@jointautomation.com

Address:No. 100 Nanjing Road, New 100 Innovation Industrial Park, Qingdao City, Shandong Province, China