Why Choose the Mersen P300554 Protistor® High-Speed Fuse?
The Mersen P300554 is a premium Protistor® Size 72 high-speed semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment. Designed for demanding industrial applications, it protects diodes, thyristors, IGBTs and other semiconductor devices from damaging short-circuit and overcurrent conditions while helping maximise equipment reliability and minimise downtime.
As part of the advanced Mersen Protistor® Size 72 series, the P300554 combines a high interrupting capacity with exceptionally low let-through energy. Its robust square ceramic body, silver-plated contacts and integrated striker indicator make it ideal for variable speed drives, UPS systems, industrial power converters, renewable energy systems and other high-performance power electronic equipment.
Rated at 280 A with a 1250 V AC IEC / 1300 V AC UL voltage rating, the P300554 features DIN 110 blade terminals with an integrated striker, providing secure installation and dependable protection for industrial semiconductor applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 280 A current rating for industrial power electronics.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- High 126 kA breaking capacity.
- Integrated striker indicator for simplified maintenance.
Key Features
- Mersen Protistor® Size 72 series.
- Catalogue number: PC72UD13C280D1A.
- 280 A rated current.
- 1250 V AC IEC / 1300 V AC UL operating voltage.
- aR ultra-fast semiconductor protection characteristic.
- DIN 110 blade terminals.
- Integrated striker indicator.
- Silver-plated contacts with ceramic square body construction.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range delivers exceptionally low I²t values and rapid fault clearance, helping extend equipment life while reducing maintenance costs and production downtime.
The P300554 is widely specified for protecting industrial drives, UPS systems, renewable energy converters, rectifiers, inverters and other high-power electronic equipment operating in demanding industrial environments.
Typical Applications
- Variable speed drives (VSDs).
- Industrial power converters.
- Renewable energy inverter systems.
- Uninterruptible power supplies (UPS).
- Rectifiers and inverters.
- Industrial automation and power distribution equipment.
