Before you pack: the Dominican Republic uses Types A and B, 120 V and 60 Hz. The grid in the Dominican Republic delivers 120 V. Dual-voltage gear copes; single-voltage 230 V devices do not. 60 Hz rather than 50 Hz matters only for motors and timers, not for power supplies.
Handy for multi-stop trips: the Cayman Islands, Bermuda, El Salvador and Aruba use the same plug types. Travelling further to Dominica, Grenada and Greenland means a different adapter. In North and Central America, 24 of 31 recorded destinations use exactly this combination.
Protective earth
Grounded and ungrounded sockets may occur
Mixed supply: Type A without earth, Type B with earth. Which one is in your room only shows on arrival.
At 120 V a 230 V-only hair dryer will not work properly; dual-voltage chargers will. Frequency is 60 Hz; timers and simple motors run differently. Check your own device →
Yes. UK plugs do not fit the sockets in the Dominican Republic.
Which plug type does the Dominican Republic use?
The records list Types A and B; the grid supplies 120 V at 60 Hz.
Will my hair dryer work in the Dominican Republic?
the Dominican Republic supplies 120 V. Dual-voltage chargers are fine; 230 V-only appliances need a converter.
An adapter changes the plug shape only, not voltage or frequency. the Dominican Republic supplies 120 V at 60 Hz – check the rating plate on your device. How to read a rating plate →
If a socket gets hot, crackles or smells burnt, unplug the device straight away.