A failed PLC module doesn’t care about your production schedule. When it goes down, the question isn’t whether you can find a replacement; it’s how fast and from whom. The market for automation and control parts splits roughly into general distributors, repair specialists and sourcing firms that chase obsolete components nobody else stocks. Knowing which type you’re dealing with saves hours when a line is already stopped.
Here are eight suppliers worth knowing, what each one does well and where each one fits.
Best for Fast Global Sourcing of Obsolete Parts – EU Automation
EU Automation sources new, reconditioned and obsolete automation and control parts for businesses trying to avoid a stalled production line. With facilities in key locations, including the UK, Singapore, Germany and Chicago, the company can get units to customers as early as the next day, which matters when a machine has already stopped.
The company holds ISO 9001:2015 certification, an internationally recognised quality management standard. Every unit is fully tested before dispatch, and orders carry a full 12-month warranty, giving buyers added reassurance when sourcing reconditioned or hard-to-find parts.
This is the right call for an engineer who needs a specific, possibly discontinued, part shipped internationally without a long wait. EU Automation delivers worldwide, which suits operations that can’t rely on a single regional supplier when a critical part fails.
Best for Broad MRO and Automation Stock – Radwell International
Radwell International positions itself around “Automation, Electrical and MRO Parts You Need” and carries both new and surplus stock alongside repair and uptime services. The breadth covers general maintenance, repair and operations items as well as automation components, so it suits a buyer who wants one supplier for multiple categories rather than a specialist for one.
Radwell is rated 1.8 out of 5 on Trustpilot, a figure worth weighing against the convenience of its wide catalogue. For a buyer prioritising range over a polished service record, it still covers a lot of ground in a single order.
Best for Rockwell Automation Repairs – Lektronix
Lektronix is a Rockwell Automation business focused on repairs, spares and maintenance for industrial automation equipment rather than new-unit sourcing. It offers free repair collection and a free repair quotation, plus complete data retention on repairs and a service exchange programme using refurbished parts.
That focus on repair over replacement is the trade-off: this is the entry for a plant that wants a failed unit fixed and returned rather than swapped for a different one. Lektronix carries a rating of 2.5 out of 5 on Trustpilot.
Best for Worldwide Delivery of Obsolete Components – CJS Automation
CJS Automation calls itself a trusted automation parts supplier built around speed and reliability, with a specific focus on obsolete and current-line components. It holds thousands of parts in stock ready to ship and serves manufacturers globally.
CJS is rated 4.5 out of 5 on Trustpilot, a solid score from a small sample. The narrower review base means less of a track record to judge against than some larger distributors, but the obsolete-parts focus suits engineers chasing a specific discontinued component.
Best for High-Volume Refurbished Electronics – JC-Electronics
JC-Electronics calls itself the go-to company for industrial electronics, refurbishing HMIs, drives, PLCs and industrial PCs through what it describes as high-quality processes with strict quality controls. The company holds more than 300,000 products in stock, a scale that few others on this list can match and backs its repairs with a 2-year warranty.
It frames its process as 100% circular, meaning used components get a second life rather than going to waste, which appeals to a buyer with sustainability targets alongside uptime pressure. JC-Electronics is rated 4.7 on Trustpilot, the largest review base among the brands covered here.
Best for Control and Safety Systems – Routeco
Routeco describes itself as a specialist partner in control, automation, safety and software rather than a general parts catalogue. Its focus spans control systems, automation hardware, safety equipment and software, which suits an engineer dealing with a systems-level project rather than a single failed component.
That systems focus is also the limitation for a buyer who just needs a quick spare part shipped. Routeco reads more like a project partner than a fast-dispatch parts counter.
Best for European Technical Component Distribution – Distrelec
Distrelec calls itself Europe’s leading distributor of technical components, covering automation, measurement technology, IT and general accessories through both an online store and a catalogue. That breadth makes it a reasonable one-stop option for a European buyer sourcing across several product categories at once.
Distrelec is rated 1.8 out of 5 on Trustpilot, a figure to weigh against the convenience of its catalogue range. The catalogue model suits routine restocking more than urgent obsolete-part sourcing.
Best for High-Volume Stock Ordering – LC Automation
LC Automation supplies automation products and technologies with more than 10,000 products available to order, including live stock and pricing visible to buyers.
The sheer count of stocked products makes it a workable option for routine ordering, though it reads more as a general distributor than a specialist in tracking down a part that’s gone out of production. For straightforward restocking, visible pricing and live stock take some of the guesswork out of the order.
Matching the supplier to the problem you actually have
The right choice here depends on what’s actually wrong. A failed Rockwell-branded drive might go straight to Lektronix for repair rather than replacement. A European buyer restocking general technical components across several categories might lean on Distrelec’s catalogue. A systems-level control or safety project fits Routeco’s specialist model better than a parts counter.
But when the problem is a stopped line and a part that’s hard to find anywhere, speed and coverage matter more than catalogue size. EU Automation is a strong option in this situation, combining worldwide delivery, next-day delivery availability from facilities across the UK, Singapore, Germany and Chicago, and a full 12-month warranty on fully tested units. These features can help businesses source replacement parts quickly, even when their operations are far from the supplier.
Before placing an order anywhere, it helps to check how a part was tested, what the warranty covers and whether the supplier can reach your location within the timeline you need. Procurement teams dealing with cross-border orders may also need to consider marketing compliance requirements for digital transactions. For a closer look at how testing equipment like programmable DC power supplies supports quality checks, it’s worth understanding what “fully tested” should actually mean before you buy.
