Why Choose the Mersen B301071 High-Speed Semiconductor Fuse?
The Mersen B301071 is a premium Protistor® Size 32 square body high-speed semiconductor fuse engineered to provide exceptional protection for modern power conversion equipment. Designed specifically for semiconductor applications, it safeguards sensitive devices including IGBTs, thyristors, diodes and rectifiers against damaging short-circuit currents. The fuse features an ultra-fast aR operating characteristic, making it ideal for demanding industrial applications.
Manufactured using precision die-cut fuse elements embedded in solidified sand, the B301071 delivers low let-through energy (I²t) and a high interrupting capacity. Silver-plated contact surfaces and non-magnetic hardware provide excellent electrical performance and long-term reliability, while the integrated striker indicator enables remote fuse status indication when used with an appropriate microswitch.
Rated at 1100 A with a 600 V AC IEC / 650 V AC UL voltage rating, the Mersen B301071 is ideally suited for industrial motor drives, UPS systems, power converters, renewable energy installations and other high-power semiconductor applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 1100 A current rating for high-power industrial applications.
- 600 V AC IEC / 650 V AC UL voltage rating.
- Designed specifically for protecting IGBTs, thyristors and power semiconductors.
- Low I²t limits damaging fault energy.
- Silver-plated contacts provide excellent conductivity and corrosion resistance.
- Integrated striker indicator for remote fuse indication.
- Manufactured by Mersen, a global leader in electrical protection.
Key Features
- Mersen Protistor® Size 32 semiconductor fuse.
- Catalogue Number: A065UD32LI1100.
- Square body high-speed fuse construction.
- 1100 A rated current.
- 600 VAC IEC / 650 VAC UL rated voltage.
- aR ultra-fast operating characteristic.
- Long slotted blade terminals.
- Integrated striker indicator.
- Silver-plated contact surfaces.
- High interrupting capacity up to 200 kA.
Reliable Protection for Industrial Power Electronics
The Mersen B301071 has been engineered to minimise the damaging effects of short-circuit faults in semiconductor equipment. Its low-energy let-through characteristics help protect expensive power electronic components while reducing downtime and maintenance costs.
Protistor® semiconductor fuses are widely used by equipment manufacturers worldwide thanks to their high interrupting capacity, consistent performance and compliance with international standards for semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- Industrial inverters.
- UPS and backup power systems.
- Renewable energy installations.
- Battery energy storage systems.
- Industrial automation equipment.
