Why Choose the Mersen Q300509 Protistor® High-Speed Fuse?
The Mersen Q300509 (PC73UD13C630TF) is a high-performance square body semiconductor protection fuse engineered to provide exceptional protection for sensitive power electronic devices. Part of the renowned Mersen Protistor® Size 73 series, this ultra-fast acting aR fuse is specifically designed to safeguard diodes, thyristors, IGBTs and other semiconductor components in demanding industrial power conversion applications.
Designed for reliability and rapid fault interruption, the Q300509 delivers outstanding current limitation and low let-through energy, helping to minimise damage to expensive semiconductor equipment. Its silver-plated contacts, robust ceramic body and high breaking capacity ensure dependable operation in challenging industrial environments.
With a 630 A current rating and 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen Q300509 is ideally suited for high-power drives, UPS systems, renewable energy equipment, DC drives and industrial power converters where fast semiconductor protection is essential.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for sensitive electronic equipment.
- 630 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Low I²t performance helps minimise equipment damage during faults.
- Robust square body construction for long service life and reliable operation.
Key Features
- Mersen Protistor® Size 73 series.
- Catalogue number: PC73UD13C630TF.
- 630 A rated current.
- 1250 V AC (IEC) / 1300 V AC (UL).
- Ultra-fast aR operating characteristic.
- Square body fuse with flush ends and metric threaded connections.
- Integrated striker indicator.
- Silver-plated contact surfaces for excellent conductivity.
Reliable Protection for Power Electronics
Semiconductor protection fuses are specifically engineered to interrupt high fault currents before sensitive electronic components can be damaged. Their ultra-fast operating characteristics provide significantly lower let-through energy than conventional industrial fuses, making them ideal for protecting high-value power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, UPS systems and motor drive applications, delivering dependable protection for critical semiconductor devices while reducing costly downtime.
Typical Applications
- Variable speed drives (VSDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy equipment.
- Protection of IGBTs, thyristors and power semiconductors.
