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Current-limiting power fuses are widely used in industrial plants, shopping centers, hospitals, schools, office buildings and underground residential service because they afford excellent over-current protection and noiseless operation, and because they can be used in confined spaces.

The Sure Guard ETP back-up current-limiting fuses are designed to protect overhead distribution systems and are used in series with another protective device (such as an expulsion fuse). This combination limits the high-fault current to a safe level, thus providing protection through the complete range.

Designed specifically for Mersen’s HP6J and HP10J series of photovoltaic fuses, Mersen’s HPJ fuse holders are certified for use with 90°C temperature rated conductors, an industry first. Fuse holders are available with box connectors, stud connectors or a combination of the two in order to meet various customer requirements. Insulators are either molded glass-filled polycarbonate or phenolic with verified dielectric strength in excess of 2500V. All fuse clips are made of high conductivity tin-plated copper.