Product Details  1.It conforms to IEC60947-3 2.rated operational current 63-630A 3.isolating switch fuse,isolating switch,switch fuse  Used to cabinet and drawer electrical controlling sets of equipment. Used as power switch isolating switch and emergency switch to protect circuit in distrbution circuit and motor circuit, particularly the high-short circuit of AC 50-60Hz, the rated operational current 63-630A, rated operational volatage 660V below, current voltage 220V or 440V. Conformed to AC-21, AC-22, AC-23. It conforms to IEC60947-3. Rated insulation voltage: 1000V Rated operational voltage: 380VAC, 660VAC, 220VDC, 440VDC Rated conventional thermal current lth: 80A, 160A, 400A, 800A Rated enclosed thermal current lth: 63A, 125A, 160A, 250A, 400A, 630A Max Fuse-link: 160A, 400A, 630A isolating switch fuse,isolating switch,switch fuse