Why Choose the Mersen E300522 Protistor® High Speed Fuse?
The Mersen E300522, catalogue number PC71UD13C450TF, is a premium square body high speed semiconductor fuse engineered to provide ultra-fast protection for modern high-voltage power electronic equipment. As part of the trusted Mersen Protistor® Size 71 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short circuits and fault currents.
Designed for demanding industrial applications, the E300522 combines outstanding current limiting performance with low let-through energy to help minimise damage to expensive equipment and maximise system uptime. Precision die-cut fuse elements embedded in solidified sand, silver-plated contact surfaces and non-magnetic hardware provide dependable long-term protection for critical power conversion systems.
With a 450 A current rating, a 1250 V AC IEC rating and a 1300 V AC UL rating, the Mersen E300522 is ideally suited for high-voltage drives, renewable energy converters, UPS systems, battery energy storage systems and industrial automation equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 450 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Provides dependable protection for IGBTs, thyristors and diode modules.
- Low I²t characteristics help minimise equipment damage.
- Flush end metric threaded terminals enable secure bolted installation.
Key Features
- Mersen Protistor® Size 71 series.
- 450 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Flush end terminals with metric threaded holes.
- Integrated striker indicator for remote fuse monitoring.
- High breaking capacity.
- Silver-plated contacts with non-magnetic hardware.
- RoHS compliant.
Reliable Protection for High-Voltage Power Electronics
High speed semiconductor fuses are engineered to interrupt fault currents before sensitive semiconductor devices can be damaged. The Mersen Protistor® Size 71 range delivers exceptionally fast fault clearing with low I²t values, making it ideal for protecting modern high-voltage power conversion equipment while improving system reliability and reducing costly downtime.
The E300522 is widely used in renewable energy systems, industrial drives, high-power converters, UPS installations and energy storage applications where dependable semiconductor protection is essential.
Typical Applications
- High-voltage variable frequency drives.
- Renewable energy inverter systems.
- Battery energy storage systems (BESS).
- Industrial power converters.
- UPS and standby power equipment.
- Heavy industrial automation systems.
