a. Usage: For NT and NH fuse links According to IEC60269, DIN43620, GB13539 and CE Safety, RoHS certificate Rated Voltage: AC500V/AC690V or for semiconductor-protecting-insert-part AC1000V b. Low voltage types of ceramic fuse holder for NH3(NT3) fuse links Type: NH3 fuse holder Rated Current: 630A Single-pole for double busbar terminal connection Weight: 800g Material: Ceramic.