ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades looking for miniature circuit breaker

JCM,
In this particular case, I don't think that voltage comes into it.
As long as the voltage of the unit is above the voltage of the system in use.
3 pole breakers are generally supposed to trip if one of the poles break.
It shouldn't really matter what sort of system that this is done under!.