Why Choose the Mersen E300545 Protistor® High Speed Fuse?
The Mersen E300545, catalogue number PC71UD13C200D1A, is a premium square body high-speed semiconductor fuse designed to provide ultra-fast protection for modern power electronic equipment. As part of the trusted Mersen Protistor® Size 71 series, this fuse is specifically engineered to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short circuits and fault currents. Featuring DIN 110 blade terminals and an integrated striker indicator, it offers reliable performance in demanding industrial applications.
Engineered for high-performance semiconductor protection, the E300545 combines precision die-cut fuse elements embedded in solidified sand with silver-plated contact surfaces and non-magnetic hardware. This construction delivers exceptionally low let-through energy (I²t), helping to minimise damage to expensive equipment while maximising system uptime and operational reliability.
With a 200 A current rating, 1250 V AC IEC rating and 1300 V AC UL rating, the Mersen E300545 is ideally suited for high-voltage variable speed drives, renewable energy systems, UPS installations, power converters and industrial automation equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 200 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Designed to protect IGBTs, thyristors and diode modules.
- Low I²t characteristics help minimise equipment damage.
- DIN 110 silver-plated blade terminals for secure bolted installation.
Key Features
- Mersen Protistor® Size 71 series.
- 200 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 71 range delivers exceptionally fast fault clearing with low I²t values, making it ideal for protecting modern high-voltage power conversion equipment while improving reliability and reducing costly downtime.
The E300545 is widely used in renewable energy systems, industrial motor drives, power converters, UPS installations and heavy-duty automation equipment where dependable semiconductor protection is essential for safe and continuous operation.
Typical Applications
- High-voltage variable frequency drives.
- Industrial motor control systems.
- Renewable energy inverter systems.
- Battery energy storage systems (BESS).
- Power converters and rectifiers.
- UPS and standby power systems.
