CEE series of industrial plug and socket comply with the International Electrotechnical Commission IEC309-1, IEC39-2 standard and GB/T11918-2001, GB/T11919-2001. Suitable for industrial three-phase line or single-phase line power plug device, then new generation of industrial plug and socket. CEE series industrial plug and socket design is reasonable, firm structure, fast assembly and disassembly, have good protective properties, impact resistance, splash-proof, reliable contact, the outdoors, moisture, dust, ambient temperature -25 ° C to +40 ℃, non-corrosive and explosive gases and non-conductive dust and other environmental work. The AC rated voltage does not exceed 660V, 440V DC does not exceed the current does not exceed 125A, rated frequency of not more than 400 Hz, the relative air humidity: ≤ 98%. Industrial plugs and sockets and connectors are widely applicable to construction sites and construction machinery, oil exploration, ports, iron and steel smelting, chemical, mining, airport, subway, production plants, industrial assembly line, laboratories, power configuration, sewage treatment works, as well as car manufacturing all kinds of industrial and mining enterprises has been successfully applied. Second, the performance characteristics: 1) Safe and reliable: the charged body exposure protection against electric shock. 2) Impact resistance: No shell is made of high strength PA66 engineering plastics. 3) Protection class: closed structure, IP44; splash-proof IP67. 4) access to reliable: internal latch stainless steel sleeve with elastic lasting