Why Choose the Mersen H300824 Protistor® High-Speed Fuse?
The Mersen H300824 (Catalogue No. 12,5 URD 71 ESF 0450) is a Protistor® Size 71 aR square body high-speed semiconductor fuse designed to provide exceptional protection for power semiconductor devices in demanding industrial applications. This model is rated at 450A and 1250VAC, making it suitable for protecting converters, drives, UPS systems and other power electronic equipment.
Featuring a partial-range aR operating characteristic, the H300824 rapidly clears short-circuit faults while minimising thermal and mechanical stress on sensitive semiconductor components such as IGBTs, thyristors and diodes. It incorporates an integrated striker (ESF) indicator to simplify maintenance and remote indication.
Manufactured by Mersen, the H300824 forms part of the internationally recognised Protistor® range, offering dependable protection, excellent reliability and high interrupting performance for modern industrial power conversion systems.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- Ultra-fast aR characteristic for semiconductor protection.
- 450A continuous current rating.
- 1250VAC operating voltage.
- Integrated ESF striker indication.
- High breaking capacity for industrial power electronics.
- Designed to minimise semiconductor damage during fault conditions.
- Suitable for demanding industrial environments.
Key Features
- Manufacturer: Mersen
- Series: Protistor® Size 71
- Manufacturer Part Number: H300824
- Catalogue Number: 12,5 URD 71 ESF 0450
- Square body high-speed semiconductor fuse.
- aR ultra-fast operating class.
- Integrated ESF striker indicator.
- Designed for semiconductor and converter protection.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- UPS systems.
- Renewable energy converters.
- Battery energy storage systems.
- Motor control centres.
- Industrial rectifiers.
- Power conversion equipment.
