ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Will an American 2-pole brkr function properly if wired to a European 220v 50h sys ?

I keep thinking about that too, but there are definitely 1N and 2P breakers available. 127/220V was used here until about 1975, so the 2 fuses of the old wiring make sense. Probably this was just kept until today. It definitely makes tracing of neutreal-to-ground faults much easier since you can isolate each circuit by just turning off the breaker.