Why Choose the Mersen R085207 Protistor® High-Speed Fuse?
The Mersen R085207 (D120GC75V63EF) is a premium Protistor® square body high-speed semiconductor fuse designed to deliver rapid and reliable protection for sensitive power electronic equipment. Engineered specifically for demanding DC applications, it safeguards semiconductors including IGBTs, thyristors, diodes and rectifiers against damaging short-circuit currents while helping maximise equipment uptime and reliability.
As part of the proven Mersen Protistor® Size 120 gR 750 VDC series, the R085207 features exceptionally low let-through energy (I²t), low power dissipation and extended service life. The fuse incorporates open slot blade terminals with an integrated striker, providing secure installation and convenient remote fuse indication for critical DC protection systems.
Rated at 63 A with a 750 V DC (IEC) voltage rating, the R085207 is ideally suited to railway power systems, industrial DC drives, battery energy storage systems, UPS equipment and renewable energy installations where fast semiconductor protection is essential.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 63 A current rating.
- 750 V DC IEC rated voltage.
- Protects IGBTs, thyristors, diodes and rectifiers.
- Very low I²t minimises semiconductor damage.
- Integrated striker for remote fuse indication.
- Open slot blade terminals for secure installation.
Key Features
- Mersen Protistor® Size 120 gR series.
- Manufacturer part number: R085207.
- Catalogue number: D120GC75V63EF.
- 63 A rated current.
- 750 V DC IEC rated voltage.
- Square body high-speed semiconductor fuse.
- Open slot blade terminals.
- Integrated striker indication.
Reliable Protection for Critical Power Electronics
High-speed semiconductor fuses are specifically developed to protect sensitive power electronic devices against destructive short-circuit currents. Their extremely fast operating characteristics reduce thermal and electrical stress, helping maximise equipment reliability while minimising downtime and maintenance costs.
The Mersen Protistor® DC range has been developed for railway power and auxiliary circuits together with other demanding industrial DC applications requiring dependable semiconductor protection and long service life.
Typical Applications
- Railway power and auxiliary circuits.
- Industrial DC drives.
- Battery energy storage systems.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy installations.
- Protection of IGBTs, thyristors and power semiconductor devices.
