Why Choose the Mersen FR14GR69V63 Protistor® Semiconductor Fuse?
The Mersen FR14GR69V63 is a high speed gR semiconductor fuse designed to provide dependable protection for sensitive power semiconductor devices. Part of the established Mersen Protistor® 14×51 gR series, it rapidly interrupts damaging overcurrents to help protect components such as IGBTs, thyristors, diodes and rectifiers used in industrial power electronic systems.
This cylindrical fuse combines an extremely high interrupting rating with effective current limitation, helping reduce thermal and mechanical stress during electrical faults. Its compact ceramic body and standard ferrule terminals allow straightforward installation in compatible 14×51 mm fuse holders and clips.
With a rated current of 63 A, a 690 V AC IEC voltage rating and a breaking capacity of 160 kA, the FR14GR69V63 is suitable for variable frequency drives, power converters, inverters, UPS equipment and other applications requiring fast and reliable semiconductor protection.
Key Advantages
- High speed gR fuse designed for semiconductor protection.
- 63 A current rating for industrial power electronic equipment.
- 690 V AC IEC voltage rating for demanding electrical systems.
- 160 kA breaking capacity for reliable fault interruption.
- Low I²t performance helps limit energy transmitted to protected components.
- Compact 14×51 mm cylindrical format for convenient installation.
Key Features
- Mersen Protistor® high speed fuse series.
- 63 A rated current.
- 690 V AC IEC rated voltage.
- gR operating class for full-range semiconductor protection.
- 160 kA maximum AC breaking capacity.
- 14×51 mm ceramic cylindrical body.
- Silver-plated copper ferrule terminals.
- Clip mounting for compatible fuse holders.
Reliable Protection for Power Electronics
High speed gR fuses are engineered to provide protection against overload and short-circuit currents throughout their operating range. Their rapid response and current-limiting characteristics help reduce the electrical energy passed into sensitive semiconductor components during a fault.
The Mersen FR14GR69V63 is manufactured for use in industrial systems where fast interruption, high breaking capacity and consistent electrical performance are essential. Its cylindrical design also supports efficient replacement and maintenance within compatible protection assemblies.
Typical Applications
- Variable frequency drives and motor control systems.
- Industrial inverters and power converters.
- Uninterruptible power supply equipment.
- Rectifier and thyristor circuits.
- Industrial automation equipment.
- Renewable energy and energy conversion systems.
