We recommend fuse protection through the use of properly selected I2t fusing (semiconductor fuses). Devices such as circuit breakers and general purpose fuses, while sufficient and necessary for load and installation protection, do not provide adequate protection for the semiconductor device.

Part Numbers

The part number shows the physical size of the fuse (14 mm or 22 mm diameter) and the amperage of the fuse. The FUSE-HLDR fuse holders are finger safe, din rail units.

Ferrule style fuses: (installs inside the finger safe fuse block shown below)

FUSE-EXT-14-25, marked FWP-25A14Fa Bussmann, I²T Fuse, 14 mm x 51 mm, 25 amp
FUSE-EXT-14-30, marked FWP-30A14Fa Bussmann, I²T Fuse, 14 mm x 51 mm, 30 amp
FUSE-EXT-14-40, marked FWP-40A14Fa Bussmann, I²T Fuse, 14 mm x 51 mm, 40 amp
FUSE-EXT-22-80, marked FWP-80A22F Bussmann, I²T Fuse, 22 mm x 58 mm, 80 amp
FUSE-EXT-22-100, marked FWP-100A22F Bussmann, I²T Fuse, 22 mm x 58 mm, 100 amp

Finger-Safe Fuse Blocks for Ferrule Style Fuses:

FUSE-HLDR-14-01, marked CH141D Bussmann, Fuse holder, 14 mm, 1 position
FUSE-HLDR-22-01, marked CH221D Bussmann, Fuse holder, 22 mm, 1 position
FUSE-HLDR-14-03, marked CH143D Bussmann, Fuse holder, 14 mm, 3 position

L Bracket Style Fuses (installs inside the DDA-6V50, DDA-6V75, DDA-100 or DAA-6V50, DAA-6V75, DAA-6V100). Marked 63FE or 100FE.

FUSE-SEMIBR-63A, marked 63FE Bussmann, I²T Fuse, L bracket style, 63 amp
FUSE-SEMIBR-100, marked 100FE Bussmann, I²T Fuse, L bracket style, 100 amp

Large I²T Fuses and Terminal Blocks:

100 Amp I2T FUSE -- FWP-100B
175 Amp I2T FUSE -- FWP-175A
Free Standing Thermal Block for Large Fuses

For a printable copy of the data bulletin including the complete specifications: I²T fuses, fuse blocks and I2T fuse accessories

Finger-Safe Fuse Blocks and ferrule style fuse

L Bracket Fuse

Large 125-200 Amp Fuses

Large Fuse Holders