The internal architecture of the Siemens BSM B3 is noted for its relative ease of maintenance compared to Delphi versions, as it features command drivers mounted directly on the motherboard.

: For railway-specific applications (interlocking or wayside components), documentation is often provided as part of a project-specific technical binder. Siemens Rail Infrastructure Portfolio Important Safety Warning

Common terminals on such modules:

For more information on the Siemens BSM B3 schematic and related topics, consult the following resources: