Travelling in Colombia you will meet Types A and B sockets, fed with 110 V at 60 Hz. 110 V instead of 230 V: check the rating plate before you plug in a hair dryer. An adapter does not change voltage. The grid runs at 60 Hz. Chargers do not care; mains-synchronised clocks and simple motors do.
The same socket system is used in Venezuela, Suriname, Guyana and Ecuador, so one adapter covers all of them. Travelling further to Uruguay, Argentina and the Falkland Islands means a different adapter. Across South America this setup is common: 5 of 14 countries.
Protective earth
Grounded and ungrounded sockets may occur
Not every socket in Colombia is earthed: Type B yes, Type A no. Class I appliances belong in an earthed outlet.
110 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 →
Types A and B – that is what you will find in Colombia (110 V, 60 Hz).
Do I need a voltage converter for Colombia?
At 110 V it depends on the rating plate: “100–240 V” is fine, single-voltage gear is not.
An adapter changes the plug shape only, not voltage or frequency. Colombia supplies 110 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.