Why Choose the Mersen J330173 Protistor® High-Speed Fuse?
The Mersen J330173, catalogue reference DN000GB69V20L, is a Protistor® NH size 000 high-speed semiconductor fuse designed to provide dependable protection for power semiconductor devices in demanding industrial applications. Featuring a gRB operating characteristic, this fuse delivers both overload and short-circuit protection for sensitive equipment such as IGBTs, thyristors and power diodes.
Rated at 20 A and 690 V AC, the J330173 is manufactured in a compact NH000 square body format with DIN 80 blade terminals and a separate blown fuse trip indicator (D08L). It offers excellent current-limiting performance and a high interrupting capacity of 200 kA, helping minimise damage to valuable semiconductor equipment during fault conditions.
The J330173 is suitable for industrial drives, rectifiers, inverters, UPS systems, renewable energy equipment and other power conversion applications where reliable semiconductor protection is essential.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 20 A current rating.
- 690 V AC rated voltage.
- gRB full-range semiconductor protection.
- Separate blown fuse trip indicator (D08L).
- High 200 kA interrupting capacity.
Key Features
- Manufacturer: Mersen
- Item number: J330173
- Catalogue reference: DN000GB69V20L
- Series: Protistor®
- NH size 000 square body fuse.
- gRB operating class.
- DIN 80 blade terminals.
- Separate trip indicator (D08L).
Engineered for Semiconductor Protection
The Protistor® gRB range is specifically developed to protect modern semiconductor devices against overloads and short-circuit faults. Fast current limitation and low let-through energy help reduce stress on expensive power electronic components while improving overall system reliability.
Its NH000 design allows straightforward installation into compatible NH fuse bases used throughout industrial power distribution and power conversion systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- Rectifiers.
- UPS systems.
- Renewable energy equipment.
- Industrial automation systems.
