Scientific, nautical, surveying, measuring, signalling, supervisory apparatus and instruments, namely, intelligent bus systems comprised of power modules, electrical circuit breakers, cables, converter connector cables, voltage supply, software, and touch panels based on CAN-Technology and Multiplexing technique for the protection and control of electrical installations in recreational and work boats and vehicles, electrical protection devices, namely, electronic and mechanical protection relays and switchgears for electrically measurable physical dimensions like current, voltage, temperature, frequency, pressure, resistance, power, energy; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electronic circuits, microcircuits, circuit boards, circuit breakers, miniature circuit breaker (MCBs), residual current circuit breakers (RCDs), residual current operated circuit breakers with overcurrent protection (RCBOs), molded-case circuit breakers (MCCBs), remote-controlled circuit breakers, [ arc fault detection and protection devices for AC and DC distribution and generation networks, namely, arc fault circuit breakers (AFCBs), arc fault circuit interrupters (AFCIs), arc fault monitors (AFMs) and related technologies in the nature of arc fault sensors and integrated circuits incorporating arc fault detection algorithms for installation in conventional and renewable energy grids operated by AC or DC including smart grid applications; ] data processing apparatus, computers; computer software for configurating, programming and controlling power distribution systems based on CAN-Technology and Multiplexing technique; computer software for preventing fires by arc fault detection in photovoltaic systems, electric and hybrid vehicles, aircraft on-board electrical systems, and in data processing centers; software for overcurrent and shortcircuit detection in automatic circuit breakers, smart power relays; electrical and electronic apparatus and instruments and parts thereof, in particular circuit breakers for equipment protection, flow-rate meters and current monitors, and electric sensors; electrical and electronic switching, protecting, controlling and measuring devices, namely, electric cut-off switches, disconnectors in the nature of cut-out switches, voltage surge protectors, electric control panels, ohmmeters; electrically remote-controlled switching devices, namely, automatically operated switches, electrically remote-controlled manually operated switches, electrically remote-controlled rocker switches, electrically remote-controlled toggle switches, electrically remote-controlled push button switches, electrically remote-controlled circuit breakers; electric relays; electronic and mechanical switching relays as well as switching amplifiers; electronic, mechatronics-based overcurrent protection, namely, surge protectors, circuit breakers, automatic circuit breakers, electronic circuits; overcurrent circuit breakers; residual current circuit breakers; thermal, thermal-magnetic, magnetic and magnetic-hydraulic circuit breakers for equipment protection; electric circuit breakers and start-up power switches with thermal and electromagnetic triggering; electrical and electronic circuit breakers for land vehicles, aircraft and watercraft; electrical and electronic circuit breakers for motor vehicles, airplanes and ships; motor protection circuit breakers; power circuit breakers; electric overcurrent switches; automatic cut-out switches; high-frequency switches; overvoltage cut-out switches; temperature switches; electric flasher switches; remote controlled power switches; power disconnectors, namely, trip units for circuit breakers and cut-out switches; circuit fuses for motor vehicles, telephone and telegraph systems; devices and systems for the distribution of electrical energy, namely, power transformers, uninterruptible power supplies, electrical conductors for transformers, power distribution units; electric voltage regulators; BUS-controlled shipboard wiring systems, in particular consisting of electric circuit breakers, electric microcontrollers, modules for BUS-coupling; integrated circuits, integrated semiconductor circuits and thick film hybrid circuits; electrical and electronic monitoring equipment, namely, electrometers, digital and analog multimeters; current monitors; voltage monitors; [ flow measuring devices in the nature of flow meters for gaseous, liquid and solid media; ] electric voltmeters