Why Choose the Mersen N085204 High-Speed Semiconductor Fuse?
The Mersen N085204 (D120GC75V160EF) is a Protistor® Size 120 square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive semiconductor devices used in railway traction systems, industrial DC converters, battery energy storage systems and renewable energy applications. Designed specifically for demanding DC installations, it delivers rapid fault interruption to minimise damage to expensive power electronic components.
Rated at 160 A with a 750 V DC (IEC) voltage rating, the N085204 features a gR operating characteristic, providing both overload and short-circuit protection for semiconductor devices. It incorporates an integrated striker indicator together with open slot blade terminals for secure installation and simplified maintenance.
As part of the renowned Mersen Protistor® range, the N085204 is designed for high-performance DC equipment operating at elevated temperatures, offering low I²t characteristics, reduced power losses and dependable protection for modern power conversion systems.
Key Advantages
- High-speed gR semiconductor protection for overload and short-circuit faults.
- 160 A current rating with 750 V DC IEC operation.
- Designed for railway, industrial DC and renewable energy systems.
- Low I²t helps minimise semiconductor damage during faults.
- Integrated striker indicator for quick fuse status identification.
- Open slot blade terminals simplify installation and replacement.
Key Features
- Mersen Protistor® Size 120 semiconductor fuse.
- Manufacturer reference: N085204.
- Catalogue number: D120GC75V160EF.
- Square body ceramic construction.
- Open slot blade terminals.
- Integrated striker indication.
- DC semiconductor protection.
- RoHS compliant.
Designed for Modern Power Electronics
High-speed semiconductor fuses are specifically developed to protect IGBTs, thyristors, diodes and other sensitive semiconductor devices from damaging fault currents. Their rapid current-limiting performance helps improve equipment reliability, reduce repair costs and minimise downtime in critical electrical systems.
The Protistor® Size 120 series is particularly suited to railway auxiliary circuits, industrial power conversion equipment, battery storage installations and renewable energy systems where dependable semiconductor protection is essential.
Typical Applications
- Railway traction and auxiliary power systems.
- Industrial DC drives and converters.
- Battery energy storage systems (BESS).
- Renewable energy power conversion.
- Protection of IGBTs, thyristors and diodes.
- High-power semiconductor equipment.
