Why Choose the Mersen H093157 Protistor® High-Speed Fuse?
The Mersen H093157 is a high-performance Protistor® cylindrical semiconductor fuse designed to protect sensitive power electronic components in demanding high-voltage DC systems. Rated at 10 A and 2000 V DC, it provides rapid fault interruption to help minimise thermal and electrical damage to semiconductor devices during short-circuit conditions.
Part of the Mersen Protistor® 36 × 250 mm gR (gRB) series, the H093157 has been developed for the improved protection requirements of modern DC equipment. Its low I²t performance limits the energy transferred to protected components, while reduced power losses and dependable operation at elevated temperatures help support long service life.
The fuse offers a maximum rated breaking capacity of 30 kA DC and features a robust ceramic body with silver-plated copper ferrule terminals. Its clip-mounted cylindrical format is particularly suitable for railway power and auxiliary circuits, industrial converters and other high-voltage DC installations requiring dependable semiconductor protection.
Key Advantages
- High-speed gR semiconductor protection characteristic.
- 10 A rated current for sensitive power electronic circuits.
- 2000 V DC voltage rating for high-voltage DC systems.
- 30 kA DC breaking capacity for reliable fault interruption.
- Low I²t performance helps minimise damage to protected components.
- Reduced power dissipation supports efficient, long-term operation.
Key Features
- Mersen Protistor® high-speed fuse series.
- 10 A rated current.
- 2000 V DC rated operating voltage.
- gR operating class with gRB design characteristics.
- 36 × 250 mm cylindrical fuse format.
- Clip mounting for compatible cylindrical fuse holders.
- Silver-plated copper ferrule terminals.
- Durable ceramic insulating body.
- 12 W power dissipation at rated current.
- RoHS compliant.
High-Speed Protection for Critical DC Equipment
Power semiconductor devices can be permanently damaged by fault energy before conventional protective devices have time to respond. The Mersen H093157 is engineered to interrupt damaging DC fault currents rapidly, reducing the electrical and thermal stress imposed on diodes, thyristors, IGBTs, rectifiers and other sensitive semiconductor assemblies.
Its 2000 V DC rating, low let-through energy and robust ceramic construction make it particularly suitable for modern railway and industrial power systems. By limiting fault energy and reducing power losses, the fuse helps improve equipment reliability, extend component service life and reduce the risk of costly damage or unplanned downtime.
Typical Applications
- Railway power and auxiliary circuits.
- High-voltage industrial DC converters.
- Traction and transportation equipment.
- DC rectifiers and inverter systems.
- Battery energy storage equipment.
- High-voltage DC distribution systems.
- Protection of diodes, thyristors, IGBTs and semiconductor modules.
