An innovative pioneer, Mersen’s Ferraz Shawmut product line of fuse technology has provided state-of-the-art protection for over 129 years. Its many innovations include the widely known and respected Amp-Trap® current-limiting fuse, Amp-Trap 2000® time-delay fuses, Protistor® fuses semiconductor protection, Limitor® high voltage fuse-links, Tri-Onic® current-limiting, time-delay fuses, the ground-breaking SmartSpot® open-fuse indicator technology, and the new HelioProtection® solar power protection fuse line