![]() ![]() IEC 60309-2 "Dimensional interchangeability requirements for pin and contact-tube accessories" applies to plugs and socket-outlets, cable couplers and appliance couplers with pins and contact tubes of standardized configurations. The red three-phase versions are used for three-phase portable equipment.Ħ3 A, IP67 mated connection IEC 60309-1 "Plugs, socket-outlets and couplers for industrial purposes" specifies general functional and safety requirements. The yellow fittings are used to provide transformer isolated 110 V supplies for UK construction sites to reduce the risk of electric shock, and this use spills over into uses of power tools outside of the construction site environment. In camping situations, the large 32 A blue fittings provide power to static caravans, whilst the smaller blue 16 A version powers touring caravans and tents. The blue fittings are often used for providing weather-proofed exterior sockets for outdoor apparatus. The cable connectors and sockets are keyed and colour-coded, according to the voltage range and frequency used common colours for 50–60 Hz AC power are yellow for 100–130 volts, blue for 200–250 volts, and red for 380–480 volts. ![]() They are also sometimes used in situations where their special capabilities (such as high current rating or three-phase facilities) are not needed, to discourage potential users from connecting domestic appliances to the sockets, as 'normal' domestic plugs will not fit. The fittings are popular in open-air conditions, as the connectors have a minimum IP44 weather-proofing rating. Connectors generally are specified by the voltage and current ratings, general configuration (number of pins), and rotational alignment ("keying"). There is a range of plugs and sockets of different sizes with differing numbers of pins, depending on the current supplied and number of phases accommodated. The ambient temperature range is −25 ☌ to 40 ☌. The maximum voltage allowed by the standard is 1000 V DC or AC the maximum current, 800 A and the maximum frequency, 500 Hz. ![]() They are also used in the entertainment industry where they are commonly referred to as "CeeForm" connectors. IEC 60309 (formerly IEC 309 and CEE 17, also published by CENELEC as EN 60309) is a series of international standards from the International Electrotechnical Commission (IEC) for "plugs, socket-outlets and couplers for industrial purposes". (optional) last-make, first-break to control arcing When mated, the spring-loaded cover on the socket hooks over the lug visible on top of the plug to lock the two together.Ģ00–250 VAC (blue) 16/20 A 2P+E 6h socket for single-phase AC power. The female socket has two additional divots which are not required by the standard, but provide access to screws to disassemble the socket. The round plug shroud has an alignment key that mates with a matching slot in the socket. ![]()
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