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CEE Plug Connectors and Code Colours
CEE Plug Connectors according to EN60309-2:1992
VDE0100 Section 6N requires measures to make it impossible for a plug to be inserted in a socket for a higher voltage. This requirement is met by specific positions of the plug insert in the case which are vary according to the voltage, type of current and frequency. The positions are defined by the hours of the clock based on the position of the earthing contact tube of the socket insert relative to the polarizing slot in the outlet shroud. Holding the socket with the slot point to 6 o'clock it is possible to determine the rated voltage of the socket from the position of the earthing contact tube.
Code colours
If the operating voltage is to be colour coded in addition to the markings, it is preferable to use the following colour coding scheme (according to Draft PREN60309 Part 1:1992)::
| Operating voltage or frequency | Code colour |
|---|---|
| 20 - 25 V |  violet |
| 40 - 50 V |  white |
| 100 - 130 V |  yellow |
| 200 - 250 V |  blue |
| 380 - 480 V |  red |
| 500 - 690 V |  black |
| over 60 - 500 Hz |  green |
| no code colour |  grey |
| Rated currents |
Pole number in A |
Frequency in Hz |
Operating voltage in V |
Position of earting contact tube in dial |
Code colour of plug-and-socket device |
Notes |
|---|---|---|---|---|---|---|
16, 32, 63 and 125 |
3 (2P+E) | 50 and 60 | 110 - 130 | 4h | yellow | |
| 200 - 250 | 6h | blue | ||||
| 380 - 415 | 9h | red | ||||
| 480 - 500 | 7h | black | ||||
| supply after a transformer | 12h | black | not standardized |
|||
| direct current | 50 - 250 | 3h | blue | |||
| 250 | 8h | black | ||||
| 4 (3P+E) | 50 and 60 | 100 - 130 | 4h | yellow | ||
| 200 - 250 | 9h | blue | ||||
| 380 - 415 | 6h | red | ||||
| 60 | 440 - 460 | 11h | red | for ships | ||
| 50 and 60 | 480 - 500 | 7h | black | |||
| 600 - 690 | 5h | black | ||||
| 380 - 415/440 | 3h | red | for containers, not standardized |
|||
| 5 (3P+N+E) | 50 and 60 | 57/100 - 75/130 | 4h | yellow | ||
| 120/208 - 144/250 | 9h | blue | ||||
| 200/346 - 240/415 | 6h | red | ||||
| 277/480 - 288/500 | 7h | black | not standardized |
|||
| 347/600 - 400/690 | 5h | black | ||||
| 60 | 250/400 - 265/460 | 11h | red | for ships | ||
| 50 and 60 | 220/380 - 240/415, 250/440 | 3h | red | for containers, not standardized |