Why Choose the Mersen B300565 High-Speed Semiconductor Fuse?
The Mersen B300565 is a premium square body high-speed semiconductor fuse engineered to provide maximum protection for sensitive power electronic equipment. Part of the renowned Mersen Protistor® Size 73 series, this fuse is specifically designed to protect semiconductors including IGBTs, thyristors, diodes and rectifiers used in industrial power conversion applications.
Designed for demanding industrial environments, the B300565 delivers ultra-fast fault interruption to minimise damage caused by short circuits while reducing costly downtime. Its robust square body construction, silver-plated contact surfaces and integrated striker indicator ensure dependable performance throughout its service life.
With a rated current of 350 A and a 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen B300565 is ideal for protecting variable frequency drives, UPS systems, industrial converters, renewable energy equipment and other high-performance semiconductor applications.
Key Advantages
- High-speed aR semiconductor protection fuse for critical power electronics.
- 350 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Ultra-fast operation protects IGBTs, thyristors, diodes and rectifiers.
- Integrated striker indicator for remote fuse indication.
- Silver-plated contacts provide excellent conductivity and long operational life.
Key Features
- Mersen Protistor® Size 73 series.
- Catalogue Number: PC73UD13C350D1A.
- 350 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body Size 73 construction.
- DIN 110 blade terminals.
- Integrated striker indicator for status monitoring.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before they can damage expensive power electronic components. Their low let-through energy helps extend equipment life while reducing maintenance costs and improving overall system reliability.
The Mersen Protistor® Size 73 range has been developed for modern industrial power conversion systems, offering dependable protection for drives, converters, UPS equipment and renewable energy installations where semiconductor protection is critical.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy equipment.
- Industrial semiconductor protection.
