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Mersen DC offers provide a very high performant protection for railway power and auxiliary circuits. Mersen DC Semiconductor fuse-links were developed to provide improved performance required by today's new DC equipment. These fuse-links are typically operated at more elevated temperature than other fuse type, have lower I²t to minimize damage to protected components on short circuits, lower watts loss and longer life.

Extremely high breaking capacity fuses:
Protection of power semiconductors
Complying with standard IEC 60269-1 and -4
600-690VAC voltage rating
aR class according to IEC 60269-4 and VDE 636-23

The 800VAC Protistor® BS88-4 fuse-link provides maximum flexibility in equipment design and ultimate protection for small power conversion equipment. These fast acting gR fuses have been engineered to provide full range protection to eliminate all overloads and semiconductor fault. They are assembled with die-cut elements embedded in solidified sand, which helps control arcing characteristics for a lower I²t and high interrupting rating level. Each fuse-link is embedded with a trip-indicator.