Why Choose the Mersen E089474 Protistor® High-Speed Fuse?
The Mersen E089474 is a premium Protistor® high-speed cylindrical semiconductor fuse designed to provide rapid fault protection for sensitive power electronic equipment operating on high-voltage DC systems. Rated at 20 A with a 1500 V DC capability, this fuse helps safeguard semiconductor devices by clearing fault currents before costly damage can occur.
As part of the proven Mersen Protistor® 20 × 190 mm gR (gRC) series, the E089474 offers extremely low let-through energy, low power dissipation and excellent thermal cycling performance. It is specifically developed to protect IGBTs, thyristors, diodes and other semiconductor components used in demanding industrial DC applications.
Manufactured to IEC standards, this cylindrical semiconductor fuse is widely used within renewable energy systems, railway auxiliary circuits, battery energy storage systems, UPS installations and industrial power converters where reliable protection is essential for maximising equipment uptime.
Key Advantages
- Ultra-fast gR (gRC) semiconductor protection fuse.
- 1500 V DC rating for demanding high-voltage DC applications.
- 20 A current rating for reliable semiconductor protection.
- Low I²t characteristics reduce stress on protected components.
- Low power losses improve overall system efficiency.
- Designed specifically for modern power electronic equipment.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 20 × 190 gR (gRC).
- Part number: E089474.
- Catalogue number: FD20GC150V20.
- Rated current: 20 A.
- Rated voltage: 1500 V DC.
- Fuse characteristic: gR (gRC).
- 20 × 190 mm cylindrical construction.
- Silver-plated copper ferrule terminals.
- RoHS compliant.
Reliable Protection for High-Power DC Systems
High-speed semiconductor fuses are engineered to interrupt fault currents in milliseconds, limiting thermal and electrical stress on expensive semiconductor devices. Their exceptionally fast operation helps prevent catastrophic failures and extends the service life of power electronic equipment.
The Mersen Protistor® range is trusted by equipment manufacturers worldwide for protecting inverters, rectifiers, UPS systems, railway auxiliary circuits, battery storage systems and renewable energy installations where dependable DC protection is essential.
Typical Applications
- Industrial power converters.
- Solar photovoltaic inverters.
- Battery energy storage systems.
- Railway traction auxiliary circuits.
- UPS systems.
- Reduced voltage motor starters.
- Protection of IGBT, SCR and diode modules.
