TYPE J / EXPLAINED
How to recognize Type J
Type J has two round power pins and an earth pin offset from their centre line. Its compact arrangement can resemble Type N at a glance. The small offset and the shape of the surrounding recess are useful recognition clues.
- Common regions
- Switzerland and Liechtenstein
- Contact arrangement
- Three compact round pins; earth pin slightly offset
- Common current variants
- Common round-pin version: 10 A; 16 A system differs
- Typical supply voltage
- Usually 220–240 V
- Standard family
- SN 441011 family
- Socket accepts
- J and suitable C plugs in the matching 10 A interface
Earthing, compatibility & common mix-ups
Swiss 10 A and 16 A configurations need separate identification; the higher-current system is not simply the same round-pin plug with a larger number printed on it. Do not assume compatibility with Type N or Schuko from a photograph. Confirm the Swiss plug designation and socket rating.
What the type letter tells you
The letter describes a recognizable connection family. It does not specify the complete wall plate, mounting box, shutters, terminal design or approval for a destination market. A plug's rated voltage is also different from the actual supply voltage at a location. An adapter changes the physical connection; it does not convert voltage or frequency.
Choosing a Type J socket for your market
Start with the destination country and the appliance connection you need to support. Then identify the exact national version within SN 441011 family, its marked current and voltage, and its earthing arrangement. The figures above describe common configurations; the supplied product's marking and technical documents define the actual model.
- Compare the complete contact pattern with the reference image, including the earth contact.
- Confirm the local supply voltage and frequency against the appliance input label.
- For a buying enquiry, include mounting format, current variant, quantity and required market documents.
Does physical fit mean the connection is suitable?
No. The earth connection, contact pressure, current rating, supply voltage and approved configuration all matter. Do not force a plug into a socket or remove an earth contact.
Reference image and initial type data: supplied global plug-and-socket workbook. Country context checked against Bel's World Plug and Input Voltage Guide. For South African configurations, see Interpower's SANS 164-2 guide. These recognition notes do not replace the applicable national standard or product documentation.