Why Choose the Mersen A330050 Protistor® High-Speed gRB Fuse?
The Mersen A330050 is a genuine Protistor® high-speed gRB fuse designed to provide reliable protection for semiconductor devices and associated electrical equipment. Manufactured to the BS88 size 000 standard, it combines high interrupting capacity with excellent current-limiting characteristics, helping to minimise damage during overload and short-circuit conditions.
Part of the trusted Mersen Protistor® British Standard range, the A330050 is suitable for industrial power electronics, motor drives, converters, rectifiers and other demanding electrical installations requiring dependable semiconductor protection. The gRB operating characteristic provides protection for both semiconductor devices and associated cabling in suitable applications.
Rated at 63 A with a 690 V AC voltage rating, the Mersen A330050 is supplied in a BS88 size 000 format without an open fuse indicator, making it suitable for installation in compatible BS88 fuse holders and switchgear.
Key Advantages
- Genuine Mersen Protistor® high-speed fuse.
- 63 A current rating.
- 690 V AC voltage rating.
- gRB operating characteristic for semiconductor and cable protection.
- Excellent current-limiting performance.
- BS88 size 000 construction for industrial installations.
Key Features
- Manufacturer: Mersen.
- Manufacturer reference: A330050.
- Description: 6.9 gRB 000 BS88/063.
- Rated current: 63 A.
- Rated voltage: 690 V AC.
- Operating characteristic: gRB.
- Fuse size: BS88 Size 000.
- Open fuse indicator: No.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before sensitive electronic devices can be damaged. Their fast operation limits thermal and mechanical stress, helping to improve equipment reliability while reducing costly downtime.
The Mersen Protistor® range is widely specified by OEMs, machine builders and electrical engineers for industrial drives, converters, UPS systems, renewable energy equipment and other power electronic applications requiring dependable circuit protection.
Typical Applications
- Variable speed drives.
- Power converters.
- Rectifiers.
- Industrial automation equipment.
- UPS systems.
- Power electronic control equipment.
