... 630A 1 Use HR17 series fuse type isolating switch,rated insulating voltage AC 800V,rated operating ... 160A-630A,mainly used as power switch,isolating switch and emergency switch with function of protection in the ... 5 Kind of usege400V:AC-20B, AC-21B, AC-22B, AC-23B; 690V: AC-20B ,AC-21B, ... 15kV2.8 Rated limiting short current:When the switch installed with standard fuse, the rated withstanding short ...