Why Choose the Mersen FR14AR69V25 High-Speed Semiconductor Fuse?
The Mersen FR14AR69V25 is a high-performance Protistor® high-speed cylindrical semiconductor fuse designed to provide dependable short-circuit protection for power semiconductor devices. Manufactured by Mersen, this fuse is engineered to protect sensitive electronic components used in industrial power conversion and motor control systems by rapidly interrupting fault currents.
As part of the proven Mersen Protistor® 14 × 51 mm aR series, the FR14AR69V25 delivers partial-range semiconductor protection in accordance with IEC 60269-4. Its extremely fast operating characteristics help minimise damage to expensive semiconductor devices while reducing equipment downtime and maintenance costs.
With a 25 A current rating, 690 V AC voltage rating and 14 × 51 mm cylindrical body, the FR14AR69V25 is ideally suited for protecting inverters, variable speed drives, UPS systems and other industrial power electronic equipment.
Key Advantages
- Ultra-fast aR semiconductor fuse for short-circuit protection.
- 25 A current rating for industrial semiconductor applications.
- 690 V AC rated voltage suitable for demanding installations.
- Current-limiting design reduces fault energy.
- Low I²t characteristics help protect sensitive semiconductor devices.
- Compact 14 × 51 mm cylindrical construction for straightforward installation.
Key Features
- Mersen Protistor® series.
- Model: FR14AR69V25.
- Rated current: 25 A.
- Rated voltage: 690 V AC.
- aR partial-range semiconductor protection.
- 14 × 51 mm cylindrical fuse.
- High interrupting capacity.
- Manufactured in accordance with IEC 60269-4.
Reliable Protection for Power Semiconductor Equipment
High-speed semiconductor fuses are specifically developed to protect devices such as IGBTs, thyristors and diodes from damaging short-circuit currents. Their rapid operation and low let-through energy help prevent catastrophic component failures while improving equipment reliability.
The Mersen Protistor® range is widely used throughout industrial automation and power electronics, providing dependable protection for variable speed drives, inverters, UPS systems and other semiconductor-based equipment requiring fast fault interruption.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Motor control equipment.
- Industrial automation systems.
