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S7-300 Accessories for SIEMENS SIMATIC S7-300

Accessories are designed to complement the PLC station and must be compatible with a specific type of CPU or module.

Typical Uses and Proper Selection

S7-300 accessories include connectors, mounting rails, bus components, MMC cards, batteries, and other components. Depending on the type of CPU, module, or ET 200M, we will verify that the configuration is correct and compatible.

Please send us the full order number, a photo of the label, and, if possible, information about the wiring or project. Based on this information, we will verify compatibility, the availability of a new or refurbished part, whether a repair is possible, and a suitable replacement.

How do you choose the right model?

The most reliable method is to select the part based on the complete SIEMENS part number. When replacing a part, we also recommend verifying the hardware and firmware versions, the part’s function, the station configuration, and compatibility in TIA Portal.

• the complete order number and the quantity requested,
• the function and technical specifications of the original part,
• compatibility with the CPU, expansion modules, and the project in question.

New and refurbished parts from our warehouses

For current S7-300 parts, we primarily check the availability of new, genuine SIEMENS parts. We have access to an extensive network of industrial parts warehouses in Europe and around the world, so we can also verify refurbished, discontinued, and hard-to-find options.