Why Choose the Mersen P300738 Protistor® High-Speed Fuse?
The Mersen P300738 is a heavy-duty Protistor® Size 2×73 high-speed semiconductor fuse engineered to provide exceptional protection for high-power semiconductor equipment operating in demanding industrial environments. Designed for critical power conversion applications, it protects diodes, thyristors, GTOs and IGBT devices against damaging short-circuit faults while helping maximise equipment uptime and reliability.
Manufactured as part of the Mersen Protistor® 2×73 series, the P300738 features a square ceramic body with TTF threaded terminals and ultra-fast aR operating characteristics. Precision silver fuse elements embedded in solidified sand provide low let-through energy, excellent current limitation and high interrupting performance for demanding power-electronic installations.
Rated at 2000 A with a 1000 V AC IEC voltage rating, the P300738 is ideally suited to high-power converters, renewable energy systems, industrial drives, UPS installations and heavy-duty power distribution equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 2000 A current rating for very high-power applications.
- 1000 V AC IEC operating voltage.
- Protects diodes, thyristors, GTOs and IGBT devices.
- 120 kA AC breaking capacity.
- Designed for demanding industrial power-conversion equipment.
Key Features
- Mersen Protistor® Size 2×73 series.
- Catalogue number: PC273UD10C20CTF.
- 2000 A rated current.
- 1000 V AC IEC rated voltage.
- aR ultra-fast semiconductor protection characteristic.
- TTF threaded terminal configuration.
- Square ceramic body construction.
- Silver-plated contacts for reliable electrical performance.
Reliable Protection for High-Power Electronics
The Mersen P300738 has been specifically developed for modern high-power semiconductor systems where rapid fault interruption is essential. Its advanced fuse technology provides excellent current limitation, helping minimise thermal stress and reduce the risk of costly damage to valuable semiconductor assemblies.
Its combination of a 2000 A current rating, high interrupting capacity and ultra-fast response makes it suitable for demanding industrial power conversion systems where reliable semiconductor protection is critical to operational continuity.
Typical Applications
- High-power variable speed drives.
- Industrial power converters.
- Renewable energy inverter systems.
- Large UPS installations.
- Traction and heavy industrial equipment.
- High-current power distribution systems.
