... series fuse type isolating switch rated operating voltage 690V 400V rated frequency 5HZ rated current 160A-630A 1 Use HR17 series fuse type ... isolating switch,rated insulating voltage AC 800V,rated operating voltage 690V,400V ... 315A, 425A2.5 Kind of usege400V:AC-20B, AC-21B, AC-22B, AC-23B; 690V: AC-20B ,AC-21B, AC-22B2.6 Fuse link installed: The ...