Why Choose the Mersen E300568 Protistor® High Speed Fuse?
The Mersen E300568, catalogue number PC73UD13C500D1A, 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 73 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short circuits and fault currents. Featuring DIN 110 blade terminals with an integrated striker indicator, it offers outstanding performance in demanding industrial applications.
Designed for maximum flexibility in equipment design, the E300568 incorporates precision die-cut fuse elements embedded in solidified sand, together with silver-plated contact surfaces and non-magnetic hardware. This construction delivers exceptionally low let-through energy (I²t), high interrupting capability and reliable long-term protection for critical semiconductor devices.
With a 500 A current rating, 1250 V AC IEC rating and 1300 V AC UL rating, the Mersen E300568 is ideally suited for renewable energy systems, industrial motor drives, UPS installations, battery energy storage systems and high-power converters requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 500 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.
- DIN 110 silver-plated blade terminals for secure installation.
Key Features
- Mersen Protistor® Size 73 series.
- 500 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- DIN 110 blade terminals.
- Integrated striker indicator for remote fuse monitoring.
- 126 kA AC 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 73 range provides exceptionally fast fault clearing with low I²t values, making it ideal for protecting high-voltage power conversion equipment while improving reliability and reducing costly downtime.
The E300568 is widely used in renewable energy systems, industrial motor drives, power converters, battery energy storage systems, UPS installations and heavy-duty automation equipment 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 systems.
- Heavy industrial automation equipment.
