120FEE stock datasheet bussmann fuse

CT, ET, FE, EET, FEE BS88 

690 Vac/500 Vdc (IEC), 700 Vac/500 Vdc (UL), 6 to 200 A 

BS88 style bolted tags high speed fuses for the protection of DCcommon bus, DC drives, power converters /rectifiers and reducedrated voltage starters. Ratings • Volts• 690 Vac/500 Vdc (IEC) • 700 Vac/500 Vdc (UL) • Amps 6-200 A • IR • CT: IEC — 90 kA RMS Sym., 40 kA at 500 Vdc,UL — 200 kA RMS Sym., 50 kA at 500 Vdc • ET, EET, FE and FEE: 200 kA RMS Sym.,50 kA at 500 Vdc Operating class aR Agency information • Designed and tested to BS88 part 4 and IEC 60269 Part 4 • UL Recognized* • CCC for ET, FE, EET, FEE • CE * Consult your Bussmann series product representative for UL Recognized status.

Where high speed fuses used?

Fast fuses are commonly used to protect semiconductor devices and rectifier diodes and thyristors in power frequency rectifier circuits.

In which condition, Fuse cannot be used?

For other power electronic devices, such as fast thyristor, high frequency thyristor, high power transistor, power field effect transistor, etc., the fusing time of fast fuse is still too long, generally can not be directly used to protect the fast fuse.