... and is mainly used in AC 50Hz/60Hz single-pole 230V , two, three, four-pole 400V circuit overload, short-circuit protection5.As well ... means frame degree rated currentThe main technical parameters:1, poles : single-pole, two, three, four pole.2, rated current : 1A, 3A, 6A, 10A, ... 63A.3, rated voltage: 230/400V ( 230V for single pole, 230/400V for 2 pole, 400V).4, instantaneous trip points: C-type, D ...