328 and 688 Series Surge-Tolerant Fuses

By Littelfuse Inc 132

328 and 688 Series Surge-Tolerant Fuses

Littelfuses' 328 and 688 series fuses offer protection superior to that of circuit breakers, providing short-circuit and overload protection and ensuring long-term reliability for outdoor applications that operate at high-surge-exposure levels. They also reduce the level of nuisance fuse tripping caused by indirect lightning surges. The 328 series fuse is optimized for outdoor LED lighting applications to protect surge protection devices (SPDs) and luminaries. Both series can be used in power distribution equipment used in wireless telecommunication base transceiver stations (BTS).

  • High-surge-withstanding capability: can withstand 20 hits of 10 kA 8/20 µs surge current without wear-out
  • High breaking capacity
  • Compact form-factors with cartridge and axial-lead (pigtail) package options
  • Operating temperature range: -55°C to +125°C
  • Enhances overcurrent and short-circuit protection; reduces power downtime caused by nuisance activation caused by indirect lightning surge
  • Suitable for high-temperature outdoor LED lighting or radio antenna applications
  • Small fuse body makes it easier to place in outdoor luminaire and telecom equipment in BTS and ISP datacenters
  • Ensures the fuse will open safely under high fault conditions