Why Choose the Mersen N300622 Protistor® High-Speed Fuse?
The Mersen N300622, catalogue number PC72UD13C450EF, is a Protistor® Size 72 square body high-speed semiconductor protection fuse designed to provide ultra-fast short-circuit protection for modern power electronic equipment. Featuring an aR operating characteristic, it is specifically engineered to protect IGBTs, thyristors, diodes and other sensitive semiconductor devices used in demanding industrial applications.
Rated at 450 A, with a 1250 V AC IEC and 1300 V AC UL voltage rating, the N300622 delivers exceptional current limitation and dependable fault interruption. Its square body construction with open slot blade terminals and integrated striker provides flexible installation and reliable status indication in high-power electrical systems.
Manufactured using precision die-cut silver fuse elements embedded in solidified sand, the Protistor® design provides low let-through energy (I²t), helping minimise damage to expensive semiconductor devices while maximising equipment reliability and reducing downtime.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 450 A continuous current rating.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Integrated striker for remote fuse indication.
- Open slot blade terminals for straightforward installation.
- Low I²t helps protect valuable semiconductor devices.
- High 126 kA breaking capacity.
- Designed for demanding industrial power conversion applications.
Key Features
- Mersen Protistor® Size 72 series.
- Catalogue number PC72UD13C450EF.
- 450 A rated current.
- 1250 V AC IEC / 1300 V AC UL.
- aR ultra-fast operating characteristic.
- Open slot blade terminals.
- Silver-plated contact surfaces.
- Integrated striker indicator.
- RoHS compliant.
Engineered for High-Voltage Semiconductor Protection
Protistor® high-speed semiconductor fuses are designed to interrupt fault currents before excessive thermal energy can damage expensive semiconductor devices. Their low energy let-through and high interrupting capability help maximise equipment reliability while reducing maintenance costs and unplanned downtime.
The Mersen N300622 is widely used in high-voltage industrial drives, renewable energy converters, UPS systems and other power conversion equipment requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- Renewable energy inverters.
- UPS systems.
- Battery energy storage systems.
- Industrial motor drives.
- Traction and transportation equipment.
- Semiconductor protection installations.
