Why Choose the Mersen D300498 Protistor® High-Speed Semiconductor Fuse?
The Mersen D300498 is a genuine Protistor® Size 72 square body high-speed semiconductor fuse designed to provide ultra-fast protection for high-power semiconductor equipment operating on medium-voltage AC systems. Manufactured as an aR class semiconductor fuse, it is specifically engineered to protect diodes, thyristors, IGBTs and other power semiconductor devices used in demanding industrial power conversion applications. The fuse is rated at 1250 V AC (IEC), 1300 V AC (UL) and 500 A.
Manufactured by Mersen, Catalogue Number PC72UD13C500TF, the D300498 features flush-end metric threaded terminals, an integrated striker indicator and silver-plated contact surfaces. Its robust ceramic square body construction and low I²t characteristics provide exceptional protection against short-circuit faults while helping minimise damage to expensive semiconductor devices.
With a high interrupting capacity, rugged construction and proven Protistor® technology, the D300498 is ideally suited for protecting industrial drives, medium-voltage converters, renewable energy equipment, UPS systems and other critical power electronic installations requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 500 A rated current.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Integrated striker indicator for rapid fault indication.
- Flush-end metric threaded terminals for secure bolted installation.
- Very low I²t and current-limiting performance.
Key Features
- Mersen Protistor® Size 72 semiconductor fuse.
- Catalogue number: PC72UD13C500TF.
- 500 A rated current.
- 1250 V AC IEC / 1300 V AC UL.
- aR operating class.
- Integrated striker indication.
- Flush-end metric threaded terminals.
- Square body bolted mounting.
Engineered for High-Voltage Power Electronics
Protistor® Size 72 semiconductor fuses are specifically designed for high-voltage power conversion equipment where extremely fast fault interruption is essential. Their low let-through energy helps minimise thermal and mechanical stress on semiconductor devices, improving equipment reliability and reducing costly downtime.
The Mersen D300498 combines high-voltage capability, excellent current limiting and rugged construction to deliver dependable protection for industrial drives, converters, UPS installations and renewable energy systems operating at up to 1250 V AC.
Typical Applications
- Medium-voltage industrial drives.
- Power converters and rectifiers.
- Renewable energy converters.
- UPS systems.
- Motor drive protection.
- High-power semiconductor protection circuits.
