Why Choose the Mersen N302692 Protistor® High-Speed Fuse?
The Mersen N302692 (D72GB60V250EF) is a high-performance Protistor® square body semiconductor protection fuse designed to provide fast and reliable protection for sensitive power electronic equipment. Engineered for demanding DC applications, this high-speed fuse delivers exceptional protection for semiconductors including diodes, thyristors, GTOs and IGBT devices used in modern power conversion systems.
As part of the trusted Mersen Protistor® Size 72 gR series, the N302692 combines rapid fault interruption with high breaking capacity, helping minimise damage to expensive semiconductor components during short-circuit conditions. Its silver-plated contacts, precision-manufactured fuse elements and robust square body construction ensure dependable long-term performance in industrial environments.
Rated at 250 A with a 600 V DC (IEC) / 650 V DC (UL) voltage rating, this fuse is ideal for protecting DC drives, UPS systems, battery energy storage, renewable energy installations and industrial power converters. The fuse features open slot blade connections with an integrated striker for straightforward installation and enhanced system monitoring.
Key Advantages
- High-speed gR semiconductor protection fuse for sensitive electronic equipment.
- 250 A current rating for demanding industrial applications.
- 600 V DC IEC / 650 V DC UL voltage rating.
- Protects diodes, thyristors, IGBTs and other semiconductor devices.
- Low I²t characteristics help minimise damage during fault conditions.
- Integrated striker for fuse indication and auxiliary switch operation.
- Robust square body design with silver-plated contacts.
Key Features
- Mersen Protistor® Size 72 gR series.
- Catalogue number: D72GB60V250EF.
- 250 A rated current.
- 600 V DC (IEC) / 650 V DC (UL).
- Square body high-speed semiconductor fuse.
- Open slot blade terminals.
- Integrated striker indicator.
- Suitable for semiconductor and power converter protection.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect sensitive electronic power devices from damaging fault currents. Their extremely fast response time reduces thermal and electrical stress, helping to extend the service life of costly semiconductor assemblies while reducing downtime.
The Mersen Protistor® range is widely used throughout industrial automation, renewable energy, transportation and power conversion industries where reliable semiconductor protection is essential for system safety and operational continuity.
Typical Applications
- Industrial DC drives.
- Variable frequency drives and inverters.
- Power converters and rectifiers.
- UPS and critical power systems.
- Battery energy storage systems.
- Renewable energy installations.
- Semiconductor protection within industrial control equipment.
