Why Choose the Mersen B301347 PC73GB69V700TF High-Speed Fuse?
The Mersen B301347 PC73GB69V700TF is a premium square body high-speed semiconductor fuse engineered to provide full-range protection for power electronic equipment. Part of the renowned Mersen Protistor® Size 73 gR 690 VAC series, it is specifically designed to safeguard sensitive semiconductor devices including diodes, thyristors, IGBTs and rectifiers from damaging overloads and short-circuit faults.
Manufactured using high-purity silver fuse elements embedded within solidified silica sand, this fuse delivers exceptional current-limiting performance, low let-through energy and high breaking capacity. Its robust construction, silver-plated contact surfaces and integrated striker indicator provide dependable protection for demanding industrial power conversion systems.
With a 700 A current rating and a 690 V AC IEC voltage rating, the B301347 is ideally suited for variable speed drives, UPS systems, industrial inverters, converters and renewable energy installations where reliable semiconductor protection is essential for maximising equipment uptime.
Key Advantages
- High-speed gR semiconductor fuse providing full-range protection.
- 700 A current rating for demanding industrial applications.
- 690 V AC IEC voltage rating for power conversion equipment.
- Extremely high breaking capacity for enhanced fault protection.
- Integrated striker indicator for convenient fuse status monitoring.
- Silver-plated contacts reduce resistance and improve long-term reliability.
Key Features
- Mersen Protistor® Size 73 gR series.
- 700 A rated current.
- 690 V AC IEC rated voltage.
- Square body high-speed fuse with flush-end metric threaded terminals.
- Integrated mechanical striker indicator.
- High-speed protection for semiconductor devices.
- Pure silver fuse elements with solidified sand arc control.
- Suitable for industrial power conversion and motor drive systems.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect sensitive electronic components by rapidly interrupting fault currents before damage can occur. Unlike conventional industrial fuses, gR semiconductor fuses provide both overload and short-circuit protection, making them ideal for modern power conversion equipment.
The Mersen Protistor® range is widely specified by OEMs, panel builders and maintenance engineers due to its exceptional current limiting performance, consistent reliability and compatibility with industrial drives, converters and renewable energy systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control centres.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and process control equipment.
