Siemens Sizer is a software tool used by electrical engineers, panel builders, and system integrators for selecting and sizing Siemens industrial control products — including contactors, circuit breakers, motor starters, cables, and power supplies. Version 3.23 is a specific release from the pre‑cloud era (approximately 2015–2017), before Siemens migrated to web‑based tools like Sizer 2022 or Siemens Technical Support Portal.

SIZER is provided by Siemens; some releases are free to download for product selection, while certain advanced features or catalogs may require registration or a commercial license. Always check the specific license terms in the installer or Siemens documentation.

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