Series II preferred current ratings (in amps) are: 20, 30, 60, 100, 200, 300, 350, 500 and 600, with wire gauges specified as AWG and circular mil.Įnvironmental protection IP67 plug and receptacle Series I preferred current ratings (in amps) are: 16, 32, 63, 125, 250, 400, 630 and 800, with wire gauges specified as mm 2. The standard includes preferred current ratings and wire gauges for both International (deemed Series I) and North American (deemed Series II) applications. Preferred current ratings and wire gauges (This is the same body that produced the "CEE 7" series of domestic AC plugs.) The industrial sockets were standardized in the 1960s in the CEE 17 series that was adopted in the UK as BS 4343, and which are now the IEC 60309 standard. The standardization was originally done by the CEE ( Commission internationale de réglementation en vue de l'approbation de l'équipement électrique), which became IECEE in 1985 ( International Commission on the Rules for the Approval of Electrical Equipment) and is now part of the IEC. IEC 60309-5 "Dimensional compatibility and interchangeability requirements for plugs, socket-outlets, ship connectors and ship inlets for low-voltage shore connection systems (LVSC)" applies to a single type of plug, socket-outlet, ship connector and ship inlet, intended to connect ships to dedicated shore supply systems described in IEC/IEEE 80005–3. IEC 60309-4 "Switched socket-outlets and connectors with or without interlock" applies to self-contained products that combine within a single enclosure, a socket-outlet or connector according to IEC 60309-1 or IEC 60309-2 and a switching device, with a rated operating voltage not exceeding 1000 VDC or VAC and 500 Hz, and a rated current not exceeding 800 A. IEC 60309-3 "Particular requirements for plugs, socket-outlets, connectors and appliance inlets for use in explosive gas atmospheres". 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. ![]() Standardization 63 A, IP67 mated connection IEC 60309-1 "Plugs, socket-outlets and couplers for industrial purposes" specifies general functional and safety requirements. The red three-phase versions are used for three-phase portable equipment. 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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