TYPE A / EXPLAINED
How to recognize Type A
A Type A socket has two narrow slots. A polarized version makes one slot wider so the matching plug has a defined orientation. The absence of a third contact is the quickest way to distinguish it from Type B.
- Common regions
- North America, Central America and Japan
- Contact arrangement
- Two parallel flat blades; no earth contact
- Common current variants
- 15 A
- Typical supply voltage
- 100–127 V
- Standard family
- NEMA 1-15 family
- Socket accepts
- Type A only
Earthing, compatibility & common mix-ups
A two-pin connection cannot provide protective earth. It should not be used as a substitute for an earthed connection required by an appliance. Japan commonly uses 100 V, while North American supplies are commonly 120 V; the similar shape does not settle the voltage question.
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 A socket for your market
Start with the destination country and the appliance connection you need to support. Then identify the exact national version within NEMA 1-15 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.