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 ?

We used to have double-pole fusing in Britain back in the 1930s. Nowadays, the regulations permit a circuit breaker to be inserted in the neutral, so long as it simultaneously breaks all phases. Double-pole isolation switches are quite common for ranges, fixed heating units, etc.

Even though the "regs" permit a C/B to open the neutral, it's not common in the U.K., except for RCDs (GFIs).