Siemens S5 Spare Parts: Power Supplies, CPUs and I/O You Can Still Buy

Keep a SIMATIC S5 system running with tested power supplies, CPUs and I/O modules.

A SIMATIC S5 that has run for decades is worth protecting, and the right spares make all the difference.

Highest priority spares

  1. Power supply, for example 6ES5951-7LB12
  2. CPU and memory modules
  3. Digital and analogue I/O cards
  4. Interface modules in distributed racks

Practical advice

  • Back up the program before you swap anything.
  • Replace backup batteries before they fail.
  • Keep a list of every module in the rack.

See the full SIMATIC S5 range, or ask us to source a module you cannot see.

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