Why Choose the Mersen J089501 Protistor® High-Speed Fuse?
The Mersen J089501 is a high-performance Protistor® cylindrical semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment operating on high-voltage DC systems. Rated at 63 A and 1000 V DC, it rapidly clears fault currents to minimise damage to expensive semiconductor devices while improving system reliability.
Part of the trusted Mersen Protistor® Size 36 × 127 mm gR (gRC) series, the J089501 features low I²t characteristics, reduced power dissipation and excellent performance at elevated operating temperatures. It incorporates an integrated striker indication system for local or remote indication after fuse operation.
Designed for railway power circuits, industrial converters, UPS systems and renewable energy applications, this high-speed fuse provides dependable semiconductor protection where rapid fault clearance is essential for protecting IGBTs, thyristors, rectifiers and other power electronic components.
Key Advantages
- High-speed gR (gRC) semiconductor protection fuse.
- 63 A current rating for demanding DC power systems.
- 1000 V DC rating for high-voltage applications.
- 100 kA DC breaking capacity for reliable fault interruption.
- Low I²t characteristics reduce stress on protected semiconductors.
- Integrated striker supports remote fuse status indication.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 36 × 127 gR (gRC).
- Part number: J089501.
- Catalogue number: FD36GC100V63T.
- Rated current: 63 A.
- Rated voltage: 1000 V DC.
- Fuse characteristic: gR (gRC).
- 36 × 127 mm cylindrical construction.
- Integrated striker indication.
- RoHS, REACH and UKCA compliant.
Reliable Protection for Modern Power Electronics
Semiconductor devices require exceptionally fast fault protection because conventional fuses may not operate quickly enough to prevent irreversible damage. The Mersen J089501 is specifically engineered to interrupt fault currents rapidly, reducing thermal stress and extending the service life of valuable power electronic equipment.
Its high interrupting capacity, low power losses and robust ceramic construction make it suitable for demanding industrial environments including railway systems, renewable energy installations, battery storage equipment and industrial DC converters where dependable semiconductor protection is essential.
Typical Applications
- Railway traction and auxiliary circuits.
- Industrial DC power converters.
- UPS systems.
- Renewable energy systems.
- Battery energy storage installations.
- Reduced-voltage motor starters.
- Protection of IGBTs, SCRs, rectifiers and semiconductor modules.
