Where to Find Siemens Automation Parts Distributors and Suppliers (2026)

Siemens automation parts reach buyers through three channels: Siemens and its authorized distributors for current-production parts, independent suppliers for surplus and discontinued stock, and system integrators when the part is one piece of a larger job. Which one you need depends on whether the part is still in the catalog and how fast your machine has to run again. Automa.Net lists 5,425 companies in 97 countries that work with Siemens (September 2026): 3,329 of them system integrators and 2,773 component suppliers, with many companies registered as both. You can also search Siemens parts in stock directly, by part number.

Three Ways to Buy Siemens Automation Parts

The Siemens name covers a very wide range: SIMATIC PLCs and HMIs, SINAMICS drives, SIRIUS contactors and motor starters, SENTRON circuit protection and SITOP power supplies. For parts still in production, Siemens sells through its own online shop and a network of authorized distributors. Once a product line is phased out, that channel narrows to repairs and a shrinking spare-parts stock, and the independent market takes over.

The difference between an authorized and an independent source is not about quality alone. It decides who stands behind the warranty and whether anyone can still sell you a part Siemens stopped making. We compare the two in detail in independent brokers vs authorized distributors.

Spare Parts for Discontinued Siemens Products

Most searches for Siemens spare parts are not for new equipment. They are for a machine that has run on the same PLC for twenty years. The SIMATIC S7-300 is the clearest example: Siemens moved the S7-300 and ET 200M ranges into phase-out on 1 October 2023, standard deliveries ended on 1 October 2025, and spare parts are guaranteed until 1 October 2033. From here on, every year makes new S7-300 stock harder to find and more expensive. The older S5 generation has been out of production for years and today exists almost entirely on the secondary market.

That is where independent suppliers matter. On Automa.Net, Siemens stock is listed as new surplus, new factory sealed, refurbished, used, used tested and exchange units, so you can decide how much you pay for how much certainty. For a machine you plan to replace in two years, a tested used module may be the sensible choice. For a line you plan to run for ten more, it may be time to plan the migration to S7-1500 instead of buying spares.

Before you order any Siemens replacement part, check three things on the nameplate of the part you are replacing:

• The order number. Siemens order numbers (MLFB), such as 6ES7315-2AH14-0AB0, identify the exact variant. A single character decides the voltage, the interface or the memory.
• The product version. The "E-Stand" or FS (functional state) printed on the label. Two parts with the same order number can differ in hardware revision.
• The firmware. For CPUs, drives and communication modules, ask the supplier to confirm the firmware version before shipping, so the part works with your existing project.

Siemens Suppliers by Country

The companies that work with Siemens are spread unevenly across the world. Germany leads with 873, followed by Poland (511), the United States (453), Italy (326), the United Kingdom (298) and Spain (294). Outside Europe and North America the numbers are smaller, but in some countries the local market has a character of its own.

Turkey (162 companies). Siemens companies in Turkey include 114 component suppliers, 83 system integrators and 27 service providers (a company can list more than one type). Istanbul has the largest cluster, followed by Konya and Bursa, the country's manufacturing centers. Schneider Electric and ABB are the brands Turkish Siemens suppliers most often carry next to it. Riskdeger in Istanbul has supplied industrial spare parts since 2013, and Emiter Elektronik in Çorlu repairs industrial drives. Turkey is also one of 18 countries with more than 1,000 Siemens items listed in stock on Automa.Net.

India (86 companies). Of the Siemens companies in India, 59 are component suppliers, 43 system integrators and 15 service providers. The most unusual cluster is in Bhavnagar, Gujarat: 17 companies, most of them marine automation suppliers. Bhavnagar is next to Alang, one of the world's largest ship-recycling yards, and the Siemens drives, PLCs and switchgear taken out of decommissioned ships are resold from there. Khans Trading and Alvi Marine are two of them. Pune and Ahmedabad follow as industrial centers.

China (41 companies). Siemens suppliers in China are mostly component traders (35 of 41), concentrated in Guangzhou and Shenzhen, with only six system integrators. Labot Automation in Huizhou carries Siemens alongside ABB, Omron and Keyence. China is a large source of Siemens stock, but also the market where it pays most to ask for photos of the actual part, its date code and its packaging before you pay.

Peru (38 companies). Siemens companies in Peru look different: 29 system integrators against 28 component suppliers, and more than half of all companies in Lima. Peru's mining and process industries buy Siemens mostly as projects, not as boxes, and very little Siemens stock is held in the country itself. Global Tek Peru in Lima is one of the integrators. For a single spare part, a Peruvian buyer will often source from stock abroad and use a local integrator for installation.

Siemens System Integrators

When the job is bigger than one part, you need a Siemens system integrator. Automa.Net lists 3,329 of them, most in Germany (597), Poland (273) and the United States (237). Typical projects are migrating an S7-300 program to S7-1500 in TIA Portal, replacing MICROMASTER drives with SINAMICS, retrofitting an ageing line or building new control panels.

Siemens runs its own certification for integrators, the Siemens Solution Partner program, with around 1,600 partners in more than 80 countries. Not every capable Siemens integrator is a Solution Partner, and not every project needs one. If yours is a regulated plant, or you want Siemens' direct support behind the integrator, ask which technologies the company is certified for, not only whether it holds the badge.

How to Choose a Siemens Parts Supplier

• Exact order number in stock. Ask for the full MLFB, a unit count and a photo of the actual nameplate, not a catalog picture.
• Condition stated plainly. New factory sealed, new surplus, refurbished and used tested are different products with different prices. Make sure the offer says which one you get.
• Warranty in writing. Ask for at least 12 months on new and refurbished parts, and know whether Siemens or the seller stands behind it.
• Product version and firmware. A supplier who knows Siemens will check both without being asked.
• Where the stock actually is. "In stock" can mean the supplier's own shelf or a partner's warehouse on another continent. For a stopped machine, that is the difference between tomorrow and next month.
• Repair as an option. For drives and older CPUs, a repair or exchange unit is often faster than any new part and keeps the hardware your machine was commissioned with.

Finding a Specific Part vs. Finding a Partner

If you know the order number, you do not need a supplier list. You need the part. Search it in AutomaSEARCH to see which suppliers hold it, in what condition and at what price, or post it as a request and let suppliers come to you with offers.

If you are looking for a long-term supplier, a repair partner or an integrator for a migration, start from the company side instead. Filter the business directory by country, company type and Siemens, and compare profiles before you send the first request.

Frequently Asked Questions

Where can I buy Siemens automation parts?

For current-production parts, buy from Siemens directly or from an authorized Siemens distributor, which gives you the full manufacturer warranty. For discontinued or hard-to-find parts, independent suppliers that hold surplus, refurbished and used stock are usually the only option. Searching the order number across suppliers shows who holds it and in what condition.

Are Siemens S7-300 spare parts still available?

Yes. Siemens ended standard S7-300 deliveries on 1 October 2025 but guarantees spare parts until 1 October 2033. Independent suppliers also hold new surplus, refurbished and used S7-300 modules. Prices are rising as stock shrinks, so for a line with a long future, plan the migration to S7-1500.

Is it safe to buy used or refurbished Siemens parts?

It can be, if the supplier states the condition clearly, gives a written warranty and sends photos of the actual part. Check the order number, product version and firmware against the part you are replacing. Tested used parts and exchange units are a common, economical choice for machines near the end of their life.

How do I find a Siemens system integrator?

Filter a business directory by company type and brand, then by your country, and compare integrators by the Siemens technologies and industries they list. For projects that need Siemens' direct backing, ask whether the integrator is a Siemens Solution Partner and for which technologies.

What is a Siemens MLFB number?

MLFB is the Siemens machine-readable order number, for example 6ES7315-2AH14-0AB0. Each position encodes part of the product's specification, so two numbers that differ by one character can be different parts. Always search and order by the full MLFB from the nameplate.

Can I buy Siemens parts from suppliers in another country?

Yes, and for obsolete parts it is often necessary, because the unit you need may only be in stock on the other side of the world. Check delivery time, import duties and who handles a warranty claim before you order. For regular purchases, a local supplier or integrator is usually simpler.