Type J vs. Type L

Type J is Switzerland's own standard -- three round pins in a small hexagonal-bodied plug, in 10A and 16A variants. Its design directly influenced Brazil's and South Africa's later Type N standards, though reversed polarity during adaptation broke compatibility with its own descendants.

Type L, Italy's standard, uses three round pins in a straight line rather than a triangle, in two incompatible sizes (10A and 16A). Chile and Uruguay use the same physical design, though no independently confirmed national standard document defines it in either country.