TYPE D / EXPLAINED
How to recognize Type D
Type D has three round pins arranged in a triangle. The earth pin is larger than the live and neutral pins. Its smaller overall pin pattern separates it from Type M, which can look very similar in a photograph.
- Common regions
- India, Nepal and selected neighbouring markets
- Contact arrangement
- Three round pins in a triangle; larger earth pin
- Common current variants
- 5 A BS 546 family; Indian versions commonly 6 A
- Typical supply voltage
- Usually 220–240 V
- Standard family
- BS 546 family; Indian national requirements apply
- Socket accepts
- Matching Type D configuration
Earthing, compatibility & common mix-ups
Older British-derived versions and current Indian versions should not be reduced to one universal current rating. A loose fit from an unrelated two-pin plug is not evidence of safe compatibility. Confirm the local national standard and the marked current of both components.
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 D socket for your market
Start with the destination country and the appliance connection you need to support. Then identify the exact national version within BS 546 family; Indian national requirements apply, 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.