Why Choose the Mersen FR27GB80V20T High-Speed Semiconductor Fuse?
The Mersen FR27GB80V20T is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide full-range protection for power semiconductor devices used in industrial power conversion equipment. Part of the Mersen Protistor® 27 × 60 mm gR (gRB) series, this fuse incorporates an integrated trip indicator (striker) for rapid fault indication and simplified maintenance. It is rated at 20 A and 800 V AC (IEC), making it ideal for demanding industrial applications.
Designed to protect IGBTs, SCRs, diodes and other sensitive semiconductor devices, the FR27GB80V20T offers exceptional current-limiting performance and a high interrupting capacity. Its solidified sand construction and precision die-cut fuse elements help minimise let-through energy, improving equipment protection and system reliability.
The compact 27 × 60 mm cylindrical body enables installation in compatible fuse holders within drives, converters, UPS systems and industrial automation equipment. The integrated striker allows straightforward connection to monitoring systems for fast identification of operated fuses.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 20 A current rating for industrial power electronics.
- 800 V AC IEC rated for demanding applications.
- Integrated striker for remote fuse indication.
- Excellent current-limiting performance reduces semiconductor damage.
- Compact 27 × 60 mm cylindrical design.
Key Features
- Mersen Protistor® 27 × 60 gR (gRB) series.
- 20 A rated current.
- 800 V AC IEC rated voltage.
- gR utilisation category for full-range semiconductor protection.
- Integrated trip indicator (striker).
- Rated breaking capacity of 90 kA AC.
- Low clearing I²t for enhanced semiconductor protection.
- RoHS compliant.
Reliable Protection for Industrial Power Electronics
The FR27GB80V20T rapidly interrupts fault currents before they can damage expensive semiconductor devices. Its high interrupting capacity and low let-through energy improve equipment reliability while helping minimise maintenance costs and production downtime.
The integrated striker provides clear indication when the fuse has operated and allows connection to compatible monitoring systems, making the fuse well suited to modern industrial automation and power conversion applications.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- UPS systems.
- Servo drives.
- Industrial automation equipment.
