Why Choose the Mersen C221446 Protistor® High-Speed Fuse?
The Mersen C221446 (FR27GB80V80T) is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide reliable full-range protection for sensitive power semiconductor devices. Featuring a gR (gRB) operating characteristic, it protects against both overloads and short-circuit faults, making it ideal for demanding industrial power conversion applications.
Manufactured in accordance with IEC 60269-1 and IEC 60269-4, the FR27GB80V80T features a robust 27 × 60 mm cylindrical design with an integrated trip indicator (striker). Its low I²t characteristics and high interrupting capacity minimise fault energy reaching valuable semiconductor components, helping improve equipment reliability and reduce maintenance costs.
Rated at 80 A with an 800 V AC IEC voltage rating, this Protistor® fuse is ideally suited for protecting industrial drives, UPS systems, inverters, converters and renewable energy equipment where dependable semiconductor protection is essential.
Key Advantages
- High-speed gR (gRB) semiconductor protection fuse.
- 80 A current rating for industrial power electronics.
- 800 V AC IEC rated voltage.
- Provides full-range protection against overloads and short circuits.
- Integrated trip indicator (striker) for rapid fuse status identification.
- 90 kA AC breaking capacity for demanding fault conditions.
Key Features
- Mersen Protistor® Size 27 × 60 gR (gRB) series.
- Catalogue number: FR27GB80V80T.
- 80 A rated current.
- 800 V AC IEC rated voltage.
- gR operating class providing full-range semiconductor protection.
- Integrated striker / trip indicator.
- Low I²t current-limiting design.
- High-strength ceramic body with silver-plated contacts.
Reliable Protection for Power Electronics
High-speed semiconductor fuses such as the Mersen FR27GB80V80T rapidly interrupt fault currents before excessive thermal energy damages sensitive power semiconductor devices. Their low let-through energy helps maximise equipment reliability while reducing costly repairs and production downtime.
The Protistor® range is widely specified by OEMs and industrial engineers for variable speed drives, UPS systems, renewable energy installations, industrial converters and other power electronic systems requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy equipment.
- Industrial automation and control panels.
