Why Choose the Mersen L330175 Protistor® High-Speed Fuse?
The Mersen L330175 (Description: 6.9 gRB 000 DO8L/032) is a Protistor® NH Size 000 high-speed semiconductor fuse designed to provide reliable full-range protection for sensitive power electronic equipment. Rated at 32 A and 690 V AC, it is engineered to protect semiconductor devices against both overloads and short-circuit faults in demanding industrial applications.
Manufactured using precision silver fuse elements embedded in high-grade silica sand, the L330175 delivers excellent current limitation and very low let-through energy to minimise damage to expensive semiconductor devices such as IGBTs, thyristors and diode modules. Its NH Size 000 construction allows straightforward installation into compatible NH fuse bases and switch disconnectors.
The gRB operating characteristic provides comprehensive semiconductor protection, making this fuse an excellent choice for industrial drives, converters, UPS systems, renewable energy equipment and other power conversion applications where dependable protection is essential.
Key Advantages
- Full-range gRB semiconductor protection.
- 32 A rated current.
- 690 V AC rated voltage.
- Ultra-fast current-limiting performance.
- Protects semiconductor devices against overload and short-circuit faults.
- Standard NH Size 000 DIN construction.
Key Features
- Mersen Protistor® L330175.
- Description: 6.9 gRB 000 DO8L/032.
- NH Size 000 square-body fuse.
- 32 A current rating.
- 690 V AC voltage rating.
- gRB utilisation category.
- DIN 80 blade terminals.
- Ultra-fast semiconductor protection.
- Ceramic square-body construction.
- Industrial-grade reliability.
Designed for Reliable Semiconductor Protection
Protistor® semiconductor fuses are specifically engineered to interrupt fault currents extremely quickly, reducing thermal and mechanical stress on power semiconductor devices. Their current-limiting characteristics help improve equipment reliability while reducing maintenance costs and downtime in industrial installations.
The NH Size 000 design enables installation into compatible DIN NH fuse holders and switch disconnectors commonly used throughout industrial power conversion and distribution systems.
Typical Applications
- Variable frequency drives.
- Industrial converters.
- UPS systems.
- Renewable energy inverters.
- Servo drives.
- Industrial rectifiers.
- Protection of IGBTs, thyristors and diode modules.
- Power electronic equipment.
