Type O Power Plug & Socket
Type O plugs have three round pins and are used exclusively in Thailand. Similar in appearance to Type F but with a third grounding pin.
Standard: TIS 166-2549
Pin Configuration: Three round pins in triangular pattern (4.8mm diameter power pins, 4mm grounding pin)
Usage: Thai outlets often accept multiple plug types including Type A, B, C, and O. Type O provides grounding which Types A and C lack.
Plug
Type O Power Plug
Plug & Socket
Complete Type O Set
Socket
Type O Wall Outlet
Countries Using Type O Plugs
Asia (1)
About Type O Plugs and Sockets
Type O plugs have three round pins and are used exclusively in Thailand. Similar in appearance to Type F but with a third grounding pin.
Technical Specifications
- Standard Name: TIS 166-2549
- Number of Pins: 3
- Grounding: Yes
- Amperage Rating: 16A
- Voltage Range: 220-240V
- Countries Using: 1
Where Type O is Used
Type O plugs are primarily used in Thailand. This plug type is found in 1 countries and territories. Check the country list below for the complete list of locations using Type O outlets.
Important Usage Notes
Thai outlets often accept multiple plug types including Type A, B, C, and O. Type O provides grounding which Types A and C lack.
Travel Tips
If you're traveling to a country that uses Type O outlets and your devices use a different plug type, you'll need a travel adapter. Make sure to also check the voltage compatibility - most modern electronics are dual-voltage (100-240V), but appliances like hair dryers may need a converter.