Why Choose the Mersen L300620 Protistor® High-Speed Fuse?
The Mersen L300620, catalogue number PC72UD13C350EF, is a Protistor® Size 72 square body high-speed semiconductor fuse engineered to provide exceptional protection for high-power semiconductor equipment. Featuring an ultra-fast aR operating characteristic, it delivers outstanding short-circuit protection for IGBTs, thyristors, diodes and other sensitive semiconductor devices used in modern power conversion systems.
Designed for demanding industrial environments, the L300620 combines low let-through energy with high interrupting capacity to minimise semiconductor damage during fault conditions. Precision die-cut fuse elements embedded in solidified sand provide controlled arc extinction, while silver-plated contacts and non-magnetic hardware ensure dependable long-term performance. The fuse features EF open-slot blade terminals with an integrated striker for optional remote indication.
Rated at 350 A, with 1250 V AC (IEC) and 1300 V AC (UL) voltage ratings, the Mersen L300620 is ideally suited to industrial drives, renewable energy converters, UPS systems, traction equipment and other high-power semiconductor applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 350 A current rating for high-power industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Low I²t characteristics minimise semiconductor damage.
- High interrupting capacity for demanding fault conditions.
- Open-slot EF blade terminals for secure installation.
- Integrated striker supports optional remote indication.
Key Features
- Mersen Protistor® Size 72 series.
- Catalogue number: PC72UD13C350EF.
- 350 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- EF open-slot blade terminals.
- Integrated low-voltage striker indicator.
- Silver-plated contact surfaces.
- Square body ceramic construction.
Advanced Protection for High-Power Electronics
Protistor® semiconductor fuses are specifically engineered to interrupt high fault currents before expensive semiconductor devices suffer catastrophic damage. Their ultra-fast response and low energy let-through characteristics maximise equipment reliability while reducing maintenance costs across demanding industrial power conversion systems.
The robust square body construction, precision fuse elements, silver-plated contacts and integrated striker make the Mersen L300620 an excellent choice for protecting high-power converters, industrial drives and renewable energy systems requiring dependable semiconductor protection.
Typical Applications
- High-power variable speed drives.
- Industrial power converters.
- Renewable energy inverters.
- Large UPS systems.
- Traction and transportation power electronics.
- Industrial rectifiers.
- IGBT, thyristor and diode protection.
