Why Choose the Mersen D300659 Protistor® High-Speed Fuse?
The Mersen D300659 is a premium Protistor® square body high-speed semiconductor fuse engineered to provide exceptional protection for modern power electronic equipment. Designed for rapid fault interruption, this aR ultra-fast fuse protects sensitive semiconductor devices including IGBTs, diodes, thyristors and GTOs against damaging short-circuit currents, helping maximise equipment reliability and minimise costly downtime.
Part of the renowned Mersen Protistor® Size 70 series, the D300659 combines low let-through energy, silver-plated contacts and a robust square body construction to deliver dependable protection in demanding industrial environments. An integrated striker indicator allows quick identification of fuse operation, simplifying maintenance and reducing service times.
With a 315 A current rating, 1200 V AC IEC / 1300 V AC UL voltage rating and 150 kA breaking capacity, the D300659 is ideally suited for industrial drives, renewable energy systems, UPS equipment, motor control centres and high-power converters requiring reliable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 315 A current rating for demanding industrial applications.
- 1200 V AC IEC / 1300 V AC UL voltage capability.
- 150 kA breaking capacity for outstanding fault interruption.
- Integrated striker indicator simplifies maintenance.
- Silver-plated contacts ensure excellent conductivity and long service life.
Key Features
- Mersen Protistor® Size 70 series.
- Catalogue number: A130UD70LI315.
- 315 A rated current.
- 1200 V AC (IEC) / 1300 V AC (UL).
- aR ultra-fast acting characteristic.
- Square body construction.
- Slotted blade terminals (long).
- Integrated striker indicator.
Reliable Protection for Industrial Power Electronics
Semiconductor protection fuses are specifically designed to interrupt high fault currents before sensitive electronic components can be damaged. Their ultra-fast operating characteristics help reduce thermal stress, extend equipment life and minimise expensive downtime within industrial power systems.
The Mersen Protistor® Size 70 range is widely specified for variable speed drives, renewable energy systems, UPS installations, industrial automation and power conversion equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- Renewable energy inverters.
- UPS and backup power equipment.
- Industrial automation and process control systems.
