Ключевые слова:
Circuit-breakers, Marking, Signal devices, Control switches, Mechanical testing, Electromagnetic radiation, Classification systems, Circuits, Switches, Indicator lights, Low-voltage equipment, Performance, Electromechanical devices, Ratings, Electric contacts, Pressure switches, Low voltage, Pushbutton switches, Electric control equipment, Approval testing, Dielectric properties, Electromagnetic fields, Environmental testing, Control devices, Rated voltage, Electrical equipment, Electrical testing, Switchgear