Why Choose the Mersen FR10GR69V4 Semiconductor Fuse?
The Mersen FR10GR69V4 is a genuine Protistor® ultra-fast semiconductor fuse engineered to provide full-range protection for sensitive power electronic equipment. Rated at 4 A and 690 V AC, this gR-class fuse is specifically designed to protect semiconductor devices from both overload and short-circuit faults, making it ideal for demanding industrial applications.
Manufactured in the internationally recognised 10 × 38 mm cylindrical format, the FR10GR69V4 is suitable for use in compatible fuse holders and is widely specified for inverter systems, UPS installations, variable speed drives and other semiconductor-based power conversion equipment. Its low let-through energy (I²t) helps minimise thermal stress on expensive electronic components during fault conditions.
As part of the Mersen Protistor® range, the FR10GR69V4 offers exceptional current limitation, rapid fault clearance and excellent cycling capability, helping improve equipment reliability while reducing maintenance costs and downtime.
Key Advantages
- Genuine Mersen Protistor® semiconductor fuse.
- 4 A rated current.
- 690 V AC IEC rated voltage.
- gR full-range semiconductor protection.
- Ultra-fast current-limiting operation.
- Low clearing I²t for improved semiconductor protection.
- Compact 10 × 38 mm cylindrical body.
- Excellent thermal cycling performance.
- Suitable for worldwide IEC applications.
Key Features
- Mersen FR10GR69V4.
- Protistor® semiconductor fuse.
- Rated current: 4 A.
- Rated voltage: 690 V AC.
- Utilisation category: gR.
- 10 × 38 mm cylindrical ceramic construction.
- Ultra-fast fault interruption.
- Current-limiting characteristics.
- No striker indication.
- IEC 60269-4 compliant.
The FR10GR69V4 has been developed specifically for protecting modern semiconductor devices where extremely rapid fault clearance is essential. Its gR operating characteristic provides full-range protection against overloads and short circuits while limiting the energy delivered to IGBTs, diodes, thyristors and other power semiconductors.
The compact 10 × 38 mm format allows straightforward installation into compatible fuse holders, making the fuse suitable for OEM equipment, industrial automation systems and maintenance applications requiring dependable semiconductor protection.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Motor drives.
- Semiconductor protection circuits.
- Industrial automation equipment.
- OEM electrical control panels.