S7-400 CPUs
Central processing units for SIMATIC S7-400 programmable controllers. Match your existing CPU model and firmware version before requesting a replacement.
Find Your Siemens Spare Part by Product Family
This catalog groups Siemens automation spare parts by major product families—S7-400 CPUs, PCS 7 Single AS bundles, and ET 200 SMART remote I/O modules. Select a family below to view recorded parts and prepare a part-specific inquiry using the exact order number.
PCS 7 Systems
Pre-configured PCS 7 Single AS bundles containing CPU, power supply, and mounting hardware. Specify the full bundle order number to ensure compatibility.
Remote I/O Modules
ET 200 SMART interface modules for distributed I/O systems. Verify the IM model and connected I/O configuration when identifying replacements.
Frequently Asked Questions
Are these genuine Siemens parts?
This catalog contains recorded order numbers for reference only. We do not claim to supply genuine, original, or authorized Siemens products. Confirm sourcing details during inquiry.
Can I search by partial order number?
For accurate matching, use the full 14-character order number. Partial searches may yield ambiguous results.
Do you stock all listed parts?
Availability is not guaranteed. Include your required delivery timeline in the quote request for confirmation.
Ready to Request a Quote?
Provide the exact Siemens order number and your system context to receive a part-specific offer.