Why Choose the Mersen FR14AR69V6T High-Speed Semiconductor Fuse?
The Mersen FR14AR69V6T is a high-performance Protistor® high-speed cylindrical semiconductor fuse engineered to provide fast and dependable short-circuit protection for sensitive power semiconductor devices. Manufactured by Mersen, this fuse is designed to safeguard industrial power electronics by rapidly interrupting fault currents before costly damage can occur.
Part of the trusted Mersen Protistor® 14 × 51 mm aR series, the FR14AR69V6T features an integrated striker indicator for fuse operation indication and complies with IEC 60269-4. Its ultra-fast current-limiting characteristics help minimise let-through energy, improving equipment reliability while reducing maintenance costs and production downtime.
With a 6 A current rating, 690 V AC voltage rating and compact 14 × 51 mm cylindrical construction, the FR14AR69V6T is ideal for protecting inverters, variable speed drives, UPS systems, converters and other industrial power electronic equipment.
Key Advantages
- Ultra-fast aR semiconductor fuse for short-circuit protection.
- 6 A current rating for sensitive semiconductor applications.
- 690 V AC rated voltage suitable for industrial installations.
- Integrated striker indicator for fuse status monitoring.
- Current-limiting design reduces fault energy reaching protected equipment.
- Compact 14 × 51 mm cylindrical body for simple installation.
Key Features
- Mersen Protistor® series.
- Model: FR14AR69V6T.
- Rated current: 6 A.
- Rated voltage: 690 V AC.
- aR partial-range semiconductor protection.
- Integrated striker indicator.
- 14 × 51 mm cylindrical fuse.
- Manufactured in accordance with IEC 60269-4.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically developed to protect sensitive power semiconductors such as IGBTs, thyristors and diodes from destructive short-circuit currents. Their extremely fast response limits fault energy, helping to extend equipment life and reduce repair costs.
The Mersen Protistor® range is widely used in industrial automation, renewable energy systems and power conversion equipment where dependable semiconductor protection is essential for safe and continuous operation.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Motor control equipment.
- Industrial automation systems.
