Type G vs. Type J

Type G, the British standard (BS 1363, 1947), is the only common plug type with a fuse built into every single plug -- protecting the appliance's cord, not just the household circuit. It's used across the UK, Ireland, Hong Kong, Singapore, Malaysia, and much of the Gulf.

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.