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Amphenol HelioFuseAmphenol Industrial Global Operations now offers a molded in-line fuse that helps to protect photovoltaic (PV) systems from ground fault current damage. Used by PV system engineers, EPCs, solar contractors and design engineers, Amphenol's HelioFuse is rugged and easy to install.

This new fuse was developed to address the need for a cost-effective solution to ground fault protection in PV systems without the need for a combiner box that houses the solar panel's fuse links. Its molded construction provides weather tight housing that prevents moisture from getting into the fuse and further protects it from harsh weather.

The UL and IP68 rated HelioFuse is offered in two configurations, a connector version that plugs into an industry standard solar connector like the Helios H4 connector and a wire overmold version for custom harnesses.


  • Rugged, low cost solution
  • Patent-pending design
  • Fully intermateable with industry standard connectors
  • 1A to 20A current rating
  • 600V and 1000V versions
  • 10,000A withstand rating
  • IP68 protection degree
  • Meets UL 94 V-0 flammability rating
  • UL approved

See also:
HelioFuse (.pdf)- for more product information, specifications, applications and ordering information.

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