Why Choose the Mersen B302658 PC71GB69V125D1A High-Speed Fuse?
The Mersen B302658 PC71GB69V125D1A is a premium square body high-speed semiconductor fuse engineered to provide full-range protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® Size 71 gR 690 VAC series, it is specifically designed to protect semiconductor devices including IGBTs, thyristors, diodes and rectifiers against overloads and short-circuit faults.
Manufactured using pure silver fuse elements embedded in solidified silica sand, this fuse delivers outstanding current-limiting performance, low let-through energy and high breaking capacity. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term operation in demanding industrial environments.
With a 125 A current rating and a 690 V AC IEC voltage rating, the B302658 is ideally suited for variable speed drives, industrial converters, UPS systems and power electronics requiring reliable semiconductor protection. The integrated striker indicator enables simple fuse monitoring and maintenance.
Key Advantages
- High-speed gR semiconductor fuse providing full-range protection.
- 125 A rated current for industrial power conversion equipment.
- 690 V AC IEC rated voltage.
- High 150 kA breaking capacity.
- Integrated striker indicator for remote status indication.
- Silver-plated DIN 110 blade terminals provide reliable electrical connections.
Key Features
- Mersen Protistor® Size 71 gR series.
- 125 A rated current.
- 690 V AC IEC operating voltage.
- Square body ceramic fuse construction.
- DIN 110 blade terminals.
- Integrated striker indication system.
- Pure silver fuse elements with solidified silica sand.
- Designed for semiconductor protection applications.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before expensive semiconductor devices can be damaged. Their extremely fast operation reduces thermal stress, limits fault energy and helps maximise the reliability of industrial power conversion equipment.
The Mersen Protistor® range is widely specified by OEMs, machine builders and industrial engineers for use in drives, converters, renewable energy systems and other critical power electronic applications requiring dependable circuit protection.
Typical Applications
- Variable frequency drives.
- Industrial power converters.
- UPS systems.
- Motor control centres.
- Renewable energy inverters.
- Industrial automation equipment.
