Siemens SIMATIC S7-300 and ET 200 parts

The SIMATIC S7-300 has been one of the most widely used Siemens controllers for decades, usually together with ET 200 distributed I/O in the field. Siemens has moved the S7-300 and ET 200M into its phase-out: they are no longer sold as regular products, and Siemens plans to supply spare parts until 1 October 2033. Plants that run on S7-300 will need replacement modules for years to come, and existing stock is becoming the main source.

GWS Parts has 149 different S7-300 and ET 200 parts in stock, 946 pieces in total, each listed with its full Siemens order number (6ES73... and 6ES71...). For the S7-300 we stock CPUs and digital and analog input and output modules. For ET 200 we mainly stock ET 200S electronic and power modules and terminal/base units, as well as ET 200M interface modules.

Many of these parts come from printing presses, such as the Goss Sunday 3000 and KBA Comet. Where we know which machine a part was used in, it is shown with the part.

When you look for a replacement, compare the complete order number and, where given, the product version (for example E-stand or firmware version). A different version can matter for configuration in STEP 7 or TIA Portal. If you are not sure, send us a photo of the module label and we will check it for you.

The condition of each part is stated on its product page: new, used or reconditioned. Can't find the part you need? Send us the order number. We check our full stock and our network, and come back to you with a quote. We ship worldwide from the Netherlands.