Why Choose the Mersen F080942 Protistor® High-Speed Fuse?
The Mersen F080942, catalogue designation 2.5 URGG36T50, is a high-speed semiconductor protection fuse engineered to safeguard sensitive power electronic devices against short-circuit faults. As part of the trusted Mersen Protistor® range, this fuse is designed for applications requiring extremely fast fault interruption to protect IGBTs, thyristors, diodes and other semiconductor components used in industrial power conversion equipment.
Manufactured to British Standard dimensions, the fuse features a compact 36 × 27 mm body with an integrated trip indicator (T) for convenient remote signalling or visual indication after operation. Its high breaking capacity and low let-through energy help reduce equipment damage and minimise downtime in demanding industrial environments.
With a 50 A current rating and a 690 V AC operating voltage, the F080942 is ideally suited to variable speed drives, UPS systems, rectifiers, inverters, DC drives and other power electronic systems where reliable semiconductor protection is essential.
Key Advantages
- High-speed semiconductor protection fuse.
- 50 A current rating for industrial power electronics.
- 690 V AC IEC rating.
- Integrated trip indicator for remote monitoring.
- High breaking capacity for reliable fault protection.
- Suitable for industrial drives, converters and UPS equipment.
Key Features
- Mersen Protistor® series.
- Catalogue designation: 2.5 URGG36T50.
- Reference number: F080942.
- 50 A rated current.
- 690 V AC IEC rated voltage.
- gR semiconductor protection characteristic.
- 36 × 27 mm British Standard size.
- Built-in trip indicator for fuse status indication.
Reliable Protection for Semiconductor Equipment
High-speed semiconductor fuses are specifically designed to interrupt fault currents before excessive thermal energy can damage sensitive semiconductor devices. Their fast operating characteristics provide superior protection compared with conventional industrial fuses, helping extend equipment life and reduce repair costs.
The Mersen Protistor® series is widely used throughout industrial automation, renewable energy, power conversion and motor control applications where dependable protection of expensive power electronics is critical.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS and backup power systems.
- Power converters and inverters.
- Soft starters.
- Industrial automation and process control equipment.
