Why Choose the Mersen W082405 Protistor High-Speed Fuse?
The Mersen W082405, catalogue number FD36GB200V50, is a high-speed cylindrical semiconductor fuse engineered to protect sensitive DC power electronic equipment against overloads and short-circuit faults. As part of the Mersen Protistor® 36 × 250 mm gR (gRB) 2000 V DC series, it is specifically designed for railway power systems, auxiliary circuits and demanding industrial DC applications requiring rapid fault interruption and dependable semiconductor protection.
Developed with low let-through energy and excellent current-limiting characteristics, the W082405 helps minimise thermal and mechanical stress on semiconductor devices during fault conditions. Its ceramic body and silver-plated ferrule terminals provide dependable long-term performance for high-voltage DC power conversion equipment operating in demanding environments.
With a rated current of 50 A, a 2000 V DC IEC voltage rating and a high DC breaking capacity, the W082405 is ideal for protecting converters, inverters, rectifiers, battery energy storage systems and railway auxiliary equipment operating in high-voltage DC installations.
Key Advantages
- High-speed gR semiconductor fuse for full-range DC protection.
- 50 A rated current for demanding power electronic applications.
- 2000 V DC IEC voltage rating.
- Low I²t helps minimise semiconductor damage.
- Designed for demanding railway and industrial DC systems.
- Low power dissipation improves operating efficiency.
- Robust ceramic construction for reliable long-term service.
- Suitable for high-voltage power conversion equipment.
Key Features
- Mersen Protistor® high-speed fuse series.
- Manufacturer item number W082405.
- Catalogue number FD36GB200V50.
- 50 A rated current.
- 2000 V DC IEC rated voltage.
- gR (gRB) utilisation characteristic.
- 36 × 250 mm cylindrical fuse format.
- Ferrule terminal construction.
- Clip mounting installation.
- Designed for semiconductor protection.
- RoHS compliant.
Reliable Protection for High-Voltage DC Equipment
High-speed semiconductor fuses are engineered to interrupt fault currents before excessive thermal energy can damage expensive semiconductor components. Their rapid response helps reduce equipment downtime while extending the service life of converters, rectifiers, inverters and other power electronic assemblies.
The Mersen W082405 combines a very high 2000 V DC rating with a compact cylindrical design, making it suitable for railway equipment, renewable energy installations, industrial DC converters and battery energy storage applications operating on high-voltage DC systems.
Typical Applications
- Railway traction and auxiliary circuits.
- Industrial DC converters.
- Power semiconductor protection.
- Rectifiers and inverters.
- Battery energy storage systems.
- Renewable energy power conversion.
- Industrial automation equipment.
- High-voltage DC distribution systems.
