Scientific, measuring, signaling, checking, supervising apparatus and instruments, namely, testing and control devices for electrical energy, namely, ammeters, voltmeters, frequency meters, watt meters, [ ohmmeters, ] and counting devices for electrical energy, namely, monitors of energy consumption; measuring apparatus for electrical energy, apparatus, instruments and equipment for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical switches, electrical disconnector switches, electrical fuse switches, [ isolators, ], namely, disconnector switches, [ circuit breakers, ] fuses, fuse carriers, namely, fuse clips and panel-mounted fuse holders for use with electronic glass and ceramic fuses, disconnectors, namely, electrical plug devices enabling connection and disconnection of power and/or control cables, [ contact circuit breakers ] and remote control switches, [ electrical components in the nature of electric contactors, ] electric connectors, [ electric relays, ] commutators, charger rectifiers, electronic or electric power rectifiers and voltage regulators, converters, frequency converters, in particular for [ aeronautics, ] current, voltage and frequency converters and transformers, static inverters, electrical and electronic inverters, sensors, namely, current, tension and electrical power sensors, electric meters, panel meters, namely, an electronic instrument that displays an input signal in either a digital or analog form, electric hour meters, housings for electrical equipment, namely, cabinets, electrical enclosures, cases, casings; cables and connectors for electric cables, batteries, battery chargers, converters with batteries, [ accumulators, electrical cells, ] cell components, namely, battery components, [ electrical outlets, ] electric insulators for circuit protection, namely, electrically insulated housings for electrical apparatus made from synthetic plastic material and lightning arrester electric insulators, thermal regulation devices, namely, thermostats, charge transfer units, namely, power supply changeover switches, inverters, voltage regulators, active filters, namely, low pass inductor filter used in high power electrical applications, rephasing capacitors, analyzer electrical controllers, electrical programmable controllers to supervise and protect circuits, persons and property; instruments and apparatus to measure electrical quantities and parameters, electrical computer terminals; [ electrical circuit boards and electric distribution consoles for electronic display, and for distribution of electricity, ] electric boards of integrated circuits, electric switchboards, electric panels to switch, control and cut off electricity, namely, electrical distribution systems, namely, power distribution panels, namely, electrical cabinets, electrical enclosures, casings; electric enclosures to connect, protect and cut off electricity, namely, assembly profiles and plates; supports for boards, for printed circuits and for electronic circuit cards, namely, circuit-mounting brackets; power supplies, namely, uninterruptible static electric power supply circuits, remote-controlled electrical circuits; circuit testers and monitors for monitoring electric current and electrical signals, electric insulation voltage monitors, detectors and insulators, namely, voltage detector and isolation cut off electricity, namely, electrical distribution systems, namely, power distribution panels, namely, electrical cabinets, electrical enclosures, casings; electric enclosures to connect, protect and cut off electricity, namely, assembly profiles and plates; supports for boards, for printed circuits and for electronic circuit cards, namely, circuit-mounting brackets; power supplies, namely, uninterruptible static electric power supply circuits, remote-controlled electrical circuits; circuit testers and monitors for monitoring electric current and electrical signals, electric insulation voltage monitors, detectors and insulators, namely, voltage detector and isolation devices; protection devices, namely, [ fusible voltage protectors and ] circuits for uninterruptible static electric power supply, namely, changeover switches of power supplies [, wireless radio transmission devices using carrier current ] ; electrical systems and equipment, namely, electrical distribution, and control protection systems and equipment, systems for distribution, for connection and connecting electrical circuits, namely, distribution blocks, switches, changeover switches, [ motor start-up and automation systems and automated equipment, namely, control units for regulating start-up electrical motors, ] compensation system, namely, current compensation devices, namely, uninterruptible power supply (PS), current filters, batteries of capacitors; uninterruptible power supply systems, namely, changeover power supply switches [ ; information processing equipment, namely, monitoring devices and computers, computer peripheral devices, computer networks, namely, cables, monitors, servers, modems and network cards, data gathering stations, namely, monitoring devices, programmable logic controllers, calculators, data processing accessories for calculators, namely, printers, memory modules, interface circuits, calculator software, electronic and electrical components for computers and electrical control devices; monitoring and warning devices, namely, computers, microcomputers, micro calculators, microorganisers and microcontrollers, their peripheral devices and their elements, namely, screens, keyboards, printers, scanners, digital display tables, memory circuits, graphics cards, sound cards, mother boards, memory cards, telecommunication interface cards, power supply, connecting and telecommunication cables, panels of industrial automata, namely, digital display panels for automates, computer programs, namely, software for the treatment of electrical data issued from electrical devices for use in database management, use as a spreadsheet, use in word processing, software packages for use in database management, use as a spreadsheet, word processing, blank data and magnetic recording carriers, namely, computer discs, floppy computer discs, magnetic computer tapes, audio cassettes, optical discs ]