Why Choose the Mersen P080421 High-Speed Semiconductor Fuse?
The Mersen P080421 is a high-performance Protistor® high-speed cylindrical fuse-link designed to protect sensitive power semiconductor devices in demanding high-voltage DC systems. Identified by manufacturer reference FD36GC150V63T, it forms part of Mersen’s 36 × 190 mm gR (gRC) fuse range developed for railway power, auxiliary circuits and modern DC equipment.
This semiconductor fuse-link provides rapid, current-limiting fault interruption with a low I²t value, helping to minimise the energy reaching protected components during a short circuit. Its reduced power losses and long operating life support dependable protection in equipment that may operate at higher temperatures than conventional fuse applications.
With a rated current of 63 A, an IEC voltage rating of 1500 V DC and a robust 36 × 190 mm cylindrical format, the Mersen P080421 is suitable for railway systems, high-voltage power converters and industrial DC installations. Its integrated striker provides clear fuse-operation indication for easier inspection and maintenance.
Key Advantages
- High-speed fuse-link designed for semiconductor protection.
- 63 A rated current for demanding DC power circuits.
- 1500 V DC IEC voltage rating.
- Low I²t performance helps minimise damage to protected components.
- Reduced watt losses support efficient operation and longer service life.
- Integrated mechanical striker simplifies fuse-status identification.
Key Features
- Mersen Protistor® semiconductor fuse range.
- FD36GC150V63T manufacturer reference.
- 63 A rated current.
- 1500 V DC rated voltage.
- gR high-speed semiconductor protection operating class.
- gRC cylindrical fuse design.
- Robust 36 × 190 mm fuse-link format.
- Fast, current-limiting short-circuit protection.
- Integrated mechanical striker indication.
- Designed for elevated operating temperatures.
Reliable Protection for High-Voltage DC Equipment
Power semiconductor devices can be permanently damaged by short-circuit currents that develop within milliseconds. High-speed fuse-links such as the Mersen P080421 interrupt these faults rapidly, limiting the electrical energy reaching sensitive diodes, thyristors, rectifiers and power conversion assemblies.
The Mersen Protistor® DC range is engineered to meet the protection requirements of modern high-voltage equipment. Its low I²t characteristics, reduced power losses and suitability for elevated operating temperatures support reliable performance in railway, industrial conversion and auxiliary power systems.
Typical Applications
- Railway traction power systems.
- Railway auxiliary electrical circuits.
- High-voltage DC power converters.
- Industrial rectifiers and inverters.
- Semiconductor protection circuits.
- Battery energy storage and charging equipment.
