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A30QS Amp-Trap® high speed fuses are intended for the protection of Power Semiconductors such as diodes, phase control SCRs and other power semiconductor devices. The A30QS is recommended for new applications providing solutions for your critical protection needs at 300V and less semiconductors.

A60X Amp-Trap® Form 101 high speed fuses are popular for the protection of higher voltage heavy rectifiers such as traction rectifiers. They can carry long sustained overloads common with heavy duty apparatus. 700A through 2000A sizes are of compact, hockey-puck design, able to provide high power protection in a small space.

Mersen DC high performance power fuses were developed to provide superior protection for railway power circuits.
These fuses are typically operated at more elevated temperatures than other fuse types.
They have lower I2t to minimize damage to components in case of short circuits, and have lower watts loss and longer life.