Components for low-voltage energy distribution, namely adapted switchgear cabinets, racks, housings, preferably for industry, installation, electronics; assembly carriers for plug-in assemblies having electronic circuits (insofar as contained in this class), signaling devices for monitoring and safeguarding switchgear cabinets; power distribution components (insofar as contained in this class), more especially busbar holders, rider safeguarding means, conductor connection terminals, connection and equipment adapters as well as load separators; modules and system components for main energy distribution, secondary energy distribution according to IEC 60439, power supply units, namely power packs, electrical accumulators; structurally divided switching systems; power supplying equipment, also interruption-free power supplying equipment (USV), also in modular construction; power converters, power inverters; overload protection for sensitive electronic equipment and computers, namely safety devices and monitoring units; electrical access checking equipment and systems comprising such; electrical and electronic control equipment and systems comprising such, electrical and electronic apparatuses and instruments (insofar as contained in this class), namely for command posts, watch-towers, console workstations, motor controls; current collecting rails, electrically conductive cables; cabling aids for electrical purposes formed from metal or plastics material, namely modules for cable management comprising cable guide ducts, cable diversion ducts, cable securing means, namely cable supporting rails, cable inserts, busbar holders, connection terminals; cable leads for switchgear cabinets accommodating electrical components; rubber terminal profiles; slide-in units for assembly carriers