Why Choose the Mersen B300519 High-Speed Semiconductor Fuse?
The Mersen B300519 is a premium square body high-speed semiconductor fuse engineered to provide reliable protection for sensitive power electronic components. Manufactured as part of the trusted Mersen Protistor® range, this fuse is specifically designed to safeguard semiconductors including IGBTs, thyristors, diodes and rectifiers used in demanding industrial power conversion systems.
Designed for high-performance applications, the B300519 delivers ultra-fast fault interruption, helping minimise damage caused by short circuits while reducing equipment downtime. Its robust square body construction, silver-plated contacts and striker indicator provide dependable operation in critical industrial environments.
With a 315 A current rating and a 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen B300519 is ideally suited for drives, UPS systems, renewable energy equipment, industrial converters and other semiconductor protection applications requiring rapid fault clearance.
Key Advantages
- High-speed aR semiconductor protection fuse for sensitive electronic equipment.
- 315 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Ultra-fast operation helps protect IGBTs, SCRs, diodes and power semiconductors.
- Integrated striker indicator for fuse status indication.
- Silver-plated contacts provide excellent conductivity and long service life.
Key Features
- Mersen Protistor® High-Speed Fuse.
- Catalogue Number: PC71UD13C315TF.
- 315 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body size 71 construction.
- Flush end terminals with metric threads.
- Built-in striker indicator for remote indication options.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect sensitive electronic power devices from damaging fault currents. Their ultra-fast operating characteristics help minimise energy let-through, reducing the risk of costly failures and extending equipment service life.
The Mersen Protistor® range is widely used in industrial automation, renewable energy systems and power conversion equipment where dependable semiconductor protection is essential. The B300519 offers proven performance for modern electrical installations operating under demanding conditions.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy equipment.
- Semiconductor and power electronics protection.
