Ключевые слова: ac, alternating current, background, closeup, concept, contacts, cost, current, design, device, electric power, electrical, electrical circuit, electrical connector, electrical energy, electrical product, electricity, electrotechnical, energy saving, macro, many, modern, plastic, plugs, power, power socket, price, products, quality, rate, rise, rosette, safe, socket, sockets, tariff, voltage,