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» Economics » Electricity » Topics begins with T » Type of plug I

Page modified: Wednesday, July 13, 2011 12:02:19

Australian plug connector (type I) "Australian 2/3-pin"

Defined in the standards AS 3112 (Australia); CPCS CCC (China)


This plug connector, which is used in Australia, New Zealand and Papua Neguinea, is three-core, has earthing contact and is appropriate for rated current intensity of 10 A. The earthing contact is a perpendicular flat contact. Neutrally and phase are in form of a turned V over it. They are rotated around 30"° against the Schuzkontakt in each case and have a nominal distance of 13.7 mm. Such plug sockets have usually a tension of 240 V with 50 cycles per second. Since 2005 finger-safe isolation of the energized contacts is mandatory.


The following countries use plug systems compatibly to type i:

  • Australia - relevant standard: AS/NZS 3112
  • New Zealand - relevant standard: AS/NZS 3112
  • Papua new Guinea - relevant standard: AS/NZS 3112
  • China (partial) - relevant standard: CPCS CCC
  • Argentina - relevant standard: IRAM 2073
  • Uruguay - relevant standard: Standard IRAM 2073


For the type I plug there are several standards, which define very in each case similar plug systems. The most relevant and oldest is the Australian standard AS 3112.

AS 3112 (Australia)

Originally 1937/1938 in Australia as standard C112 defined, was replaced the standard 1990 by the standard AS 3112. Since beginning standard in Australia, New Zealand and Papua new Guinea is today AS 3112 the relevant standard for these countries. The standard defines a polarized plug, with which the phase is related to the plug socket left. Right neutral is and in the center down earth. The contacts are flat at the ends rounded off metal pins with that masses 6.5 mm 1.6 mm. The energized ones of contacts are 33 mm long and in a angle of 30"° inversely to protective grounding rotated and have a nominal distance of 13.7 mm. Protective grounding is somewhat longer and thus with 37 mm hurrying ahead. When putting in the earth contact before the river is manufactured and separated when plugging off as the latter again. Since 2003 the standard covers also finger security, which is realized by 9 mm broad isolation of the two energized leaders. The last and relevant standard of 2003 is AS/NZS 3112:2000. It prescribes the isolated contacts with beginning 2005.

IRAM 2073 (Argentina)

In Argentina and Uruguay a similar plug connector-most important difference exists is that neutral leaders and phase are exchanged. With devices after newer standards should be however all the same, since both ladder with the same care are treated there.

CPCS CCC (China)

In China a very similar and mechanically compatible standard exists. Most important difference is that the plug sockets 180"° are turned. The earthing contact is thus above and not down. Besides the vorherschende tension is in China 220 V and not 240 V. is insignificant usually this difference of potential.


Apart from the 10 aversion exists also a variant, which is certified for a rated current intensity of 15 A. It has a somewhat thicker, longer and higher earthing contact. These plug sockets are downwardcompatible to the 10A plugs. Besides still another aversion, with which all contacts are more thickly, longer and higher, exists to 20 25 and 32 a A-variant, with which the contact pins are increased just like with the 20 A-variant. Protective grounding is with the 25 A-variant in form of a reflected L, in the 32 A-variant has it the form of an angular And all Steckosen is downwardcompatible. They take up thus in each case plugs of smaller rated current intensity, not however in reverse.

For doubly isolated class II - devices exists a two-pole variant of the 10A-Steckers. It fits into all plug socket variants, offers however for lack of earthing contact a worse stop. It is to be found usually, where into Europe of the euro plugs would be used. Devices with high requirements of electric current fall back the better stop because of usually to the three pole plug version.


The users of this plug form can be general to peace with its standard. A three pole plug sticks, is and the upward-compatibility of the plugs to the respective plug sockets with higher amperages is a good thing. 10 ampere are sufficient for very most applications, are however in case of a case too few (13 A would be better). However there are the 15 A plug sockets, but are not those not as far common as the 10 A. finger security by partial isolation of the leader contacts was later introduced. Production becomes more thereby, but it functions in such a way also well. Better would be to be planned been from the outset sunk doses (similar protected plug) and so inherent finger security and better stop free of charge to be gotten. However the partial isolation of the leaders is the correct way for an additional implementation. The polarization of the leaders remains insignificant, since all devices are appropriate for symmetrical plug systems and one itself so or thus on it should not leave. Here it, by accompanying asymmetry, leads it to a certain Fummelfaktor, that makes the plug more difficult correctly turned to put in. The three contact contacts give a safe up to good stop and are torsionally stiff enough over not to be bent. With two-pole plugs, without long and thus well sitting protective grounding, the stop is not convincing. Particularly since missing protective grounding the "fixing emphasis" from the plug center away, between which shifts leader contacts.


In addition the Australian standard AS 3112 specifies multiple plugs in different versions as well as plugs for the self assembly.


See also

  • Land overview plug types, mains voltages and - frequencies

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