Siemens automation product category

S7-400 Automation

SIMATIC S7-400 CPUs, racks, power supplies and I/O modules for established control systems, maintenance shutdowns and legacy hardware sourcing.

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S7-400 Automation products

Compare model references and available product information, then use Request a Quote to send the exact item to our team.

Category guidance

Selecting Siemens S7-400 Automation for your project

We organise S7-400 Automation by product family and model so you can compare the entries that match your control, visualisation, communication or maintenance requirement.

Send us the complete model or MLFB, quantity and destination when you need a quotation. For an installed or legacy unit, include a nameplate photo or any available system information so we can identify the product correctly.

  • Complete Siemens model or MLFB.
  • Quantity and delivery destination.
  • Reason for the request and relevant system details.
  • Nameplate photo and current system context for replacement requests.

Quote checklist

Details for Your Quote

Send the information below so we can identify the requested Siemens product and prepare the quotation.

  1. 01Product model

    Send the complete Siemens model or MLFB. Add a clear nameplate photo if the identifier is incomplete.

  2. 02Technical requirements

    Include the required interfaces, hardware version, expansion, mounting and software details when relevant.

  3. 03Order details

    Add the quantity, required condition, delivery country and target date for each item.

  4. 04Equipment context

    Tell us whether the part is for new equipment, maintenance, retrofit or an installed unit.

Multiple models

Request a Quote for Multiple Models

You can include several Siemens model numbers in one inquiry. Add the quantity and destination for each item, then describe any replacement, interface or installation requirements.

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