Why Choose the Mersen D300728 Protistor® High-Speed Fuse?
The Mersen D300728 is a high-performance Protistor® square body semiconductor protection fuse developed to provide rapid protection for high-power semiconductor devices operating in demanding industrial environments. Designed with an aR ultra-fast operating characteristic, it safeguards IGBTs, diodes, thyristors and other sensitive power electronic components against damaging short-circuit currents.
As part of the Mersen Protistor® Size 2x72 series, this fuse offers excellent current limiting performance, low let-through energy and high breaking capacity. Its square body construction incorporates silver-plated contacts, an integrated striker indicator and Omega connection with flush metric threaded terminals, providing reliable installation and simplified maintenance.
With a 1400 A current rating, 1100 V AC IEC rated voltage and 100 kA breaking capacity, the D300728 is ideally suited for protecting industrial drives, renewable energy converters, UPS systems, rectifiers and other high-power power conversion equipment.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 1400 A current rating for demanding industrial applications.
- 1100 V AC IEC rated voltage.
- 100 kA breaking capacity for outstanding fault protection.
- Integrated striker indicator for simplified maintenance.
- Omega connection with flush metric threaded terminals for secure installation.
Key Features
- Mersen Protistor® Size 2x72 series.
- Catalogue number: PC272UD11C14CTF.
- 1400 A rated current.
- 1100 V AC IEC rated voltage.
- aR ultra-fast acting characteristic.
- Square body fuse construction.
- Omega connection with flush metric threaded terminals.
- Integrated striker indicator.
Reliable Protection for High-Power Electronics
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before they can damage expensive power electronic components. Their extremely fast operation reduces thermal stress, minimises equipment downtime and improves the reliability of industrial power systems.
The Mersen Protistor® Size 2x72 range is widely specified for heavy-duty industrial drives, renewable energy systems, UPS equipment and power conversion installations where dependable semiconductor protection is essential.
Typical Applications
- High-power variable frequency drives.
- Industrial motor control systems.
- Power converters and rectifiers.
- Renewable energy inverters.
- UPS and energy storage systems.
- Heavy industrial power electronic equipment.
