Why Choose the Mersen S076307 Protistor High-Speed Fuse?
The Mersen S076307, catalogue number FD27GB66V110T, is a high-speed cylindrical semiconductor fuse developed to provide reliable protection for sensitive DC power electronic equipment against overloads and short-circuit faults. As part of the Mersen Protistor® 27 × 60 mm gR (gRB) 660 V DC series, it is specifically designed for railway power systems, auxiliary circuits and demanding industrial DC applications.
Designed with low let-through energy and reduced power losses, this Protistor® fuse helps minimise thermal and mechanical stress on semiconductor devices during fault conditions. Its robust ceramic construction, silver-plated copper ferrule terminals and integrated striker provide dependable long-term performance in high-reliability power conversion equipment.
With a rated current of 110 A, a 660 V DC IEC voltage rating and a 50 kA breaking capacity, the S076307 is ideally suited for protecting converters, inverters, rectifiers, UPS equipment and railway auxiliary power systems requiring fast semiconductor protection.
Key Advantages
- High-speed gR semiconductor fuse for full-range DC protection.
- 110 A rated current for high-power semiconductor applications.
- 660 V DC IEC voltage rating.
- Low I²t performance helps minimise semiconductor damage.
- 50 kA DC breaking capacity.
- Integrated striker indicator for remote fuse monitoring.
- Low power dissipation improves operating efficiency.
- Designed for demanding railway and industrial DC installations.
Key Features
- Mersen Protistor® high-speed fuse series.
- Manufacturer item number S076307.
- Catalogue number FD27GB66V110T.
- 110 A rated current.
- 660 V DC IEC rated voltage.
- gR utilisation characteristic.
- gRB design for semiconductor protection.
- Integrated striker indication.
- 27 × 60 mm cylindrical fuse.
- Silver-plated copper ferrule terminals.
- Clip mounting installation.
- RoHS compliant.
Reliable Protection for High-Power DC Equipment
Semiconductor fuses are engineered to interrupt fault currents before excessive thermal energy can damage sensitive electronic components. The Mersen S076307 provides rapid fault clearance, helping protect IGBTs, thyristors, diodes and other power semiconductor devices used in industrial DC systems.
Its combination of a high current rating, compact cylindrical design and integrated striker makes it an excellent choice for railway applications, industrial converters, UPS equipment and renewable energy installations requiring dependable high-speed circuit protection.
Typical Applications
- Railway traction and auxiliary circuits.
- Industrial DC converters.
- Power semiconductor protection.
- Rectifiers and inverters.
- UPS systems.
- Battery energy storage systems.
- Renewable energy power conversion.
- Industrial automation equipment.
