Why Choose the Mersen G300547 Protistor® High-Speed Fuse?
The Mersen G300547 (PC71UD13C315D1A) is a premium square body high-speed semiconductor fuse engineered to provide fast and reliable protection for sensitive power electronic equipment. As part of the renowned Mersen Protistor® Size 71 aR series, it is specifically designed to safeguard semiconductor devices including IGBTs, thyristors, diodes and power conversion systems operating at high voltages.
Designed for demanding industrial applications, this ultra-fast acting fuse helps minimise damage caused by short circuits by rapidly interrupting fault currents before they can reach critical semiconductor components. Its robust square body construction, silver-plated contacts and solidified sand arc-quenching technology deliver exceptional performance and reliability in modern electrical systems.
With a 315 A current rating, 1250 V AC IEC / 1300 V AC UL voltage rating and integrated striker indicator, the G300547 is ideally suited for use in drives, inverters, UPS systems, renewable energy equipment and industrial power conversion installations where dependable semiconductor protection is essential.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for sensitive power electronics.
- 315 A current rating for high-power industrial applications.
- 1250 V AC IEC and 1300 V AC UL voltage ratings.
- Designed to protect IGBTs, SCRs, thyristors and diodes.
- Integrated striker indicator for fuse operation indication.
- High breaking capacity with low let-through energy (I²t).
Key Features
- Mersen Protistor® Size 71 aR series.
- Catalogue number: PC71UD13C315D1A.
- 315 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- Square body fuse with DIN 110 blade contacts.
- Built-in striker mechanism for status indication.
- Silver-plated contact surfaces for excellent conductivity.
- Designed for semiconductor and power conversion protection.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically engineered to protect sensitive electronic components from destructive short-circuit currents. Unlike conventional industrial fuses, they operate extremely quickly, limiting fault energy and helping prevent expensive damage to power semiconductors.
The Mersen Protistor® range is widely specified for industrial drives, renewable energy systems, UPS installations and power conversion equipment where dependable overcurrent protection is critical to maintaining system reliability and reducing downtime.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy installations.
- Protection of IGBT, SCR and diode modules.
