Why Choose the Mersen D300015 Protistor® High-Speed Semiconductor Fuse?
The Mersen D300015 is a premium Protistor® Size 31 square body high-speed semiconductor fuse designed to provide ultra-fast protection for sensitive power electronic equipment. Engineered for demanding industrial applications, this aR class fuse delivers partial-range semiconductor protection for diodes, thyristors, IGBTs and other power semiconductor devices operating on 690 V AC (IEC) and 700 V AC (UL) systems.
Manufactured by Mersen, the D300015 features a robust square body construction with DIN 80 silver-plated blade terminals and an integrated striker indicator for rapid fault indication and simplified maintenance. Its low let-through energy (I²t) and high breaking capacity provide exceptional protection for modern power conversion equipment.
With a 500 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and an impressive 200 kA breaking capacity, the D300015 is ideally suited for variable speed drives, UPS systems, industrial inverters, converters and renewable energy installations.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 500 A rated current for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL operation.
- Integrated striker indicator for quick fault identification.
- High 200 kA breaking capacity provides exceptional fault protection.
- Silver-plated DIN 80 blade terminals ensure reliable electrical connections.
Key Features
- Mersen Protistor® Size 31 semiconductor fuse.
- Catalogue number: PC31UD69V500A.
- 500 A current rating.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR operating class for semiconductor protection.
- Integrated striker indication system.
- DIN 80 silver-plated blade terminals.
- Square body bolted mounting design.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to minimise damage caused by overloads and short circuits in sensitive electronic equipment. Their ultra-fast operating characteristics significantly reduce fault energy, helping extend the service life of expensive semiconductor devices while improving equipment reliability.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, motor control and power conversion industries for delivering consistent protection, low I²t performance and outstanding interrupting capacity.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters and converters.
- Power semiconductor protection.
- UPS systems.
- Renewable energy power conversion equipment.
- Industrial automation and motor control systems.
