In Nicaragua, the standard voltage is 120V and the frequency is 60Hz. The commonly used plug types are A and B. Most devices from North America can be used directly without a voltage converter, but a plug adapter may be needed. What power plug types are used in Nicaragua? Plug type A is commonly. In Nicaragua, types A & B are the official standard. All of North and Central America, including the Caribbean, use U. For more information, select the country you live in at the top of this page.