YCHR17 series fuse switch-disconnector is a new product, it's rated insulation ... (V) 800 Rated current (A) 400V AC20 160 250 400 630 400V AC21 160 250 400 630 400V AC22 160 250 400 630 ... NT00 NT1 NT2 NT3 Rated current of matched fuse in 400V (breaking capacity ) 20,25,32,35,40,50,63,80, ... ,355,400,425,500,630(≥100kA) Rated current of matched fuse in 690V (breaking capacity ) 20,25,32,35,40,50 ...