Why Choose the Mersen FR22AR69V63 Protistor® High-Speed Fuse?
The Mersen FR22AR69V63 is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power semiconductor devices. Featuring an aR operating characteristic, it is specifically designed to protect components such as IGBTs, thyristors, SCRs, diodes and rectifiers used in industrial power electronic systems.
Manufactured in accordance with IEC 60269-4, the FR22AR69V63 combines a compact 22 × 58 mm cylindrical design with an exceptionally high interrupting capacity. Its low let-through energy and extremely fast operation help minimise semiconductor damage during fault conditions while reducing maintenance costs and equipment downtime.
Rated at 63 A with a 690 V AC IEC voltage rating, this fuse is ideally suited for protecting variable speed drives, UPS systems, industrial inverters, converters and other high-performance power electronic equipment operating in demanding industrial environments.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 63 A current rating for industrial power electronics.
- 690 V AC IEC rated voltage.
- Very low I²t values for superior semiconductor protection.
- 160 kA breaking capacity for demanding fault conditions.
- Compact 22 × 58 mm cylindrical format for straightforward installation.
Key Features
- Mersen Protistor® 22 × 58 aR series.
- 63 A rated current.
- 690 V AC IEC rated voltage.
- aR operating class for semiconductor short-circuit protection.
- 160 kA AC breaking capacity.
- Fast-acting current-limiting design.
- Silver-plated copper ferrule terminals.
- High-strength ceramic body construction.
Reliable Protection for Power Electronics
The Mersen FR22AR69V63 is specifically designed to provide short-circuit protection for power semiconductor devices. Its fast interruption characteristics reduce thermal stress and limit fault energy, helping protect expensive electronic components before permanent damage can occur.
Protistor® semiconductor fuses are widely specified by machine builders, panel manufacturers and industrial engineers for protecting motor drives, UPS systems, renewable energy equipment and industrial automation systems where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- UPS systems.
- Motor control equipment.
- Industrial automation and control panels.