Why Choose the Mersen R085253 Protistor® High-Speed Fuse?
The Mersen R085253 (D120GC75V160TF) is a premium Protistor® square body high-speed semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment operating in demanding DC applications. Specifically designed for railway power systems, industrial drives and power conversion equipment, it delivers rapid fault interruption to protect IGBTs, thyristors, diodes and rectifiers from damaging short-circuit currents.
As part of the proven Mersen Protistor® Size 120 gR 750 VDC series, the R085253 combines very low let-through energy (I²t), reduced power dissipation and long service life. Its robust square body construction features flush-end metric threaded terminals and an integrated striker, making installation straightforward while allowing remote fuse indication for critical protection systems.
Rated at 160 A with a 750 V DC (IEC) voltage rating and a 100 kA DC breaking capacity, the R085253 is ideally suited to railway auxiliary systems, battery energy storage systems, industrial DC drives, UPS installations and renewable energy equipment where dependable semiconductor protection is essential.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 160 A current rating.
- 750 V DC IEC rated voltage.
- 100 kA DC breaking capacity.
- Very low I²t reduces stress on semiconductor devices.
- Integrated striker for remote fuse indication.
- Flush-end metric threaded terminals for secure installation.
Key Features
- Mersen Protistor® Size 120 gR series.
- Manufacturer part number: R085253.
- Catalogue number: D120GC75V160TF.
- 160 A rated current.
- 750 V DC IEC rated voltage.
- Square body high-speed semiconductor fuse.
- Flush-end metric threaded terminals.
- Integrated striker indicator.
Reliable Protection for Critical Power Electronics
High-speed semiconductor fuses are specifically developed to protect expensive power electronic devices from destructive fault currents. Their extremely fast operation limits thermal and electrical stress, helping extend equipment life while reducing maintenance costs and downtime.
The Mersen Protistor® DC range is widely specified for railway power and auxiliary circuits together with industrial DC systems where high-performance semiconductor protection is required.
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 other semiconductor devices.
