Why Choose the Mersen N300714 High-Speed Semiconductor Fuse?
The Mersen N300714, catalogue number PC70UD12C280TF, is a premium Protistor® square body high-speed semiconductor fuse designed to provide exceptional protection for sensitive power electronic equipment. Engineered for demanding industrial applications, this ultra-fast acting fuse safeguards semiconductors including IGBTs, thyristors, diodes and power modules against damaging short circuits and overcurrent conditions.
As part of the trusted Mersen Protistor® Size 70 series, the N300714 combines excellent current-limiting characteristics with a high breaking capacity, helping minimise equipment damage and reduce costly downtime. Its compact square body design, silver-plated contacts and integrated striker indicator make it an ideal solution for modern power conversion and automation systems.
With a rated current of 280 A and a 1200 V AC IEC / 1300 V AC UL voltage rating, the Mersen N300714 is ideally suited for protecting industrial motor drives, converters, UPS systems, renewable energy inverters and other high-power electronic equipment.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 280 A current rating for demanding industrial applications.
- 1200 V AC IEC / 1300 V AC UL voltage capability.
- Excellent current limiting performance to protect valuable semiconductor devices.
- Integrated striker for remote fuse indication.
- Reliable square body construction with silver-plated terminals.
Key Features
- Mersen Protistor® Size 70 series.
- Item number: N300714.
- Catalogue number: PC70UD12C280TF.
- 280 A rated current.
- 1200 V AC IEC / 1300 V AC UL rated voltage.
- Ultra-fast acting aR semiconductor protection.
- Flush-end metric threaded terminals.
- Integrated striker indication for monitoring fuse status.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically engineered to protect sensitive power electronic components by rapidly clearing fault currents before permanent damage occurs. The Mersen Protistor® range delivers low let-through energy and high interrupting capacity, helping maximise equipment reliability and minimise maintenance costs.
The N300714 is widely used in high-power industrial applications where dependable semiconductor protection is essential. Its advanced construction ensures reliable performance in demanding electrical environments while supporting long-term operational safety.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and power control equipment.
