Why Choose the Mersen FR22AR69V32T Protistor® High-Speed Fuse?
The Mersen FR22AR69V32T is a premium Protistor® high-speed cylindrical semiconductor fuse designed to provide rapid short-circuit protection for sensitive power semiconductor devices. Featuring an aR operating characteristic, it is specifically engineered to protect IGBTs, thyristors, SCRs, diodes and rectifiers used in industrial power electronic equipment. The integrated striker indicator enables quick identification of an operated fuse and can be used with compatible monitoring systems for improved maintenance efficiency.
Manufactured in accordance with IEC 60269-4, the FR22AR69V32T combines a compact 22 × 58 mm cylindrical design with an exceptionally high interrupting capacity. Its low I²t characteristics and current-limiting design minimise fault energy, helping to protect expensive semiconductor components and reduce equipment downtime.
Rated at 32 A with a 690 V AC IEC voltage rating, this fuse is ideally suited for protecting variable frequency drives, UPS systems, industrial inverters, power converters and other semiconductor-based equipment operating in demanding industrial environments.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 32 A current rating for industrial power electronics.
- 690 V AC IEC rated voltage.
- Integrated striker indication for rapid fault identification.
- 160 kA breaking capacity for demanding industrial applications.
- Low I²t performance provides enhanced semiconductor protection.
Key Features
- Mersen Protistor® Size 22 × 58 aR series.
- 32 A rated current.
- 690 V AC IEC rated voltage.
- aR operating class for semiconductor short-circuit protection.
- 160 kA AC breaking capacity.
- Integrated striker indication system.
- Fast-acting current-limiting design.
- Ceramic body with silver-plated copper ferrules.
Reliable Protection for Power Electronics
High-speed semiconductor fuses such as the Mersen FR22AR69V32T interrupt fault currents before excessive thermal energy can damage sensitive semiconductor devices. Their fast operating characteristics help improve equipment reliability while reducing maintenance costs and production downtime.
The Protistor® range is widely specified for industrial automation, renewable energy systems, motor drives, UPS installations and power conversion equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters and rectifiers.
- UPS systems.
- Motor control equipment.
- Industrial automation panels.
