Electrical, electrotechanical and electronic devices, apparatuses, instruments, namely analogue input/output modules, triac modules, transistor modules, multi-function time relays, change over contacts, power supply units, solid-state relays, module boards, electronic reversing contactors, DC-motor driven relays, interface modules, multi-function modules, interface converters, multi-function power transformers, power supply units, fixed-voltage regulators; software products and installation material, namely, terminal blocks, rail terminal blocks, multiple tier blocks and series terminals using the cutting and clamping technique; luminaire terminals, appliance terminals, terminal strips, terminal housings, connector system, multi-pole connectors, modular connectors, covered blocks, distribution boards, distribution strips, mounting rails, spring clamp terminals, insulating base terminals, fuse holders, screw clamps, cable screen clamps, all aforesaid goods as well in connection with printed circuit boards for monitoring, regulation, controlling, switching, distributing and connecting purposes; industrial networks using processors and field bus technology