Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking or supervisory, life-saving and teaching 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, electrical power distribution and control units, 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; apparatus for recording, transmission or reproduction of sound or images; mechanisms for coin-operated apparatus; cash registers; calculating machines; data processing equipment; computers; recorded and downloadable computer software for configuring, programming and controlling power distribution; recorded and downloadable computer software for parameterising, control and data logging of load circuits; recorded and downloadable computer software for preventing fires by arc fault detection in electrical systems, and data processing centers; recorded and downloadable software for overcurrent and shortcircuit detection in automatic circuit breakers and smart power relays; fire-extinguishing apparatus; electrical and electronic apparatus and instruments and parts thereof, in particular circuit breakers for equipment, flow-rate meters and flow monitors, electric sensors; electrical and electronic switching, protecting, controlling and measuring devices, namely, electric switches, electric controllers, electric cut-off switches, disconnectors in the nature of cut-out switches, voltage surge protectors, electric control panels, ohmmeters, electric microcontrollers, modules for BUS-coupling, bus terminal controllers, electric and electronic controls for machines, engines or motors; 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 and mechatronics-based overcurrent protection devices, namely, surge protectors, circuit breakers, automatic circuit breakers, electronic circuits; overcurrent circuit breakers; fault current circuit breakers; thermal, thermomagnetic, magnetic and magnetic-hydraulic circuit breakers for equipment; electric circuit breakers and electric start-up 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; electric protective motor switches; circuit breakers; electric overcurrent switches; automatic circuit breakers; electric automatic installation switches; heavy-current disconnectors, namely, cut-out switches; electric overvoltage switches; electric temperature switches; electric flash switches; electric remote control switches; power disconnectors, namely, trip units for circuit breakers and cut-out switches; electric circuit fuses for motor vehicles, telephone and telegraph systems; devices for the distribution of electrical energy, namely, electrical distribution boxes, power distribution units, power transformers, uninterruptible power supplies, electrical conductors for transformers; systems for the distribution of electrical energy, in particular in the low voltage range, comprised of electrical distribution boxes, power distribution units, power transformers, uninterruptible power supplies, and electrical conductors for transformers; voltage regulators, electric; BUS-controlled electrical control systems for ships, in particular consisting of electric circuit breakers, electric microcontrollers, modules for BUS-coupling; microcomputer electrical controls; integrated circuits, integrated semiconductor circuits and thick film hybrid electronic circuits; electrical and electronic monitoring equipment, namely, electrometers, digital and analog multimeters; electrical current monitors; electrical voltage monitors; flow meters for gaseous, liquid and solid media; electric voltmeters