Why Choose the Mersen A076429 Protistor® High-Speed Fuse?
The Mersen A076429, catalogue number DN00UC10C280L, is a Protistor® square body high-speed semiconductor fuse designed to provide rapid short-circuit protection for sensitive power semiconductor devices in demanding industrial power electronic systems. Classified as an aR semiconductor fuse, it is manufactured in accordance with IEC 60269-4 and is specifically engineered to protect IGBTs, thyristors, diodes and rectifiers from damaging fault currents.
Manufactured by Mersen, the A076429 features an NH00 square body with DIN 80 silver-plated blade terminals and an integrated striker indicator. The striker provides positive mechanical indication after fuse operation and can actuate an optional microswitch for remote signalling, reducing maintenance time and improving system availability.
With a 280 A current rating, 1000 V AC IEC voltage rating and a high 120 kA breaking capacity, the DN00UC10C280L offers dependable protection for high-power converters, drives and industrial power electronics where maximum semiconductor protection is essential.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 280 A rated current.
- 1000 V AC IEC voltage rating.
- Integrated striker indicator for rapid fault identification.
- 120 kA interrupting capacity.
- NH00 square body with DIN 80 silver-plated blade terminals.
Key Features
- Mersen Protistor® Series.
- Item number: A076429.
- Catalogue number: DN00UC10C280L.
- aR utilisation category.
- 280 A rated current.
- 1000 V AC IEC rated voltage.
- NH00 square body design.
- Integrated striker indication system.
High-Performance Protection for Industrial Power Electronics
The Mersen A076429 is engineered to interrupt high fault currents before they can damage expensive semiconductor devices. Its low let-through energy and ultra-fast operating characteristics minimise thermal and electrical stress, helping maximise equipment reliability and extend the service life of power electronic systems.
The integrated striker provides immediate visual and mechanical indication following fuse operation and can actuate a compatible microswitch for remote monitoring, simplifying maintenance and reducing system downtime in critical industrial installations.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters.
- UPS systems.
- Industrial inverters.
- Protection of IGBTs, thyristors, rectifiers and other semiconductor devices.
