Sockets in Cuba: Types A and B, supplied with 120 V at 60 Hz. At 120 V the supply sits well below the 230 V used across Europe. Power supplies marked “100–240 V” are fine; 230 V-only appliances are not. The grid runs at 60 Hz. Chargers do not care; mains-synchronised clocks and simple motors do.
The same socket system is used in Jamaica, U.S. Virgin Islands, Belize and Panama, so one adapter covers all of them. Nearby but different: Grenada, Saint Lucia and Dominica – an adapter for Cuba will not fit there. 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.
120 V is the catch here, not the plug – bring dual-voltage gear. The 60 Hz supply matters for motors and mains clocks, not for chargers. Check your own device →
The records list Types A and B; the grid supplies 120 V at 60 Hz.
Do I need a voltage converter for Cuba?
Cuba 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. Cuba 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.