Why Choose the Mersen B301163 High-Speed Semiconductor Fuse?
The Mersen B301163 is a Protistor® Size 71 square body high-speed semiconductor fuse engineered to provide superior 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. This model corresponds to Catalogue Number PC71UD13C250PA and features an ultra-fast aR operating characteristic.
Constructed using precision die-cut fuse elements embedded in solidified silica sand, the B301163 delivers low let-through energy (I²t) and high interrupting performance. Silver-plated contact surfaces and non-magnetic hardware ensure long service life and dependable electrical performance, while the integrated striker indicator allows remote fuse indication when used with a compatible microswitch.
Rated at 250 A with a 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen B301163 is ideally suited for industrial drives, converters, UPS systems, renewable energy installations and other high-power semiconductor applications requiring reliable protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 250 A current rating for industrial power conversion equipment.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and rectifiers from damaging fault currents.
- Low I²t design minimises damaging energy let-through.
- Integrated striker indicator for optional remote monitoring.
- Silver-plated contacts for excellent conductivity and corrosion resistance.
- Manufactured by Mersen, a global leader in electrical circuit protection.
Key Features
- Mersen Protistor® Size 71.
- Catalogue Number: PC71UD13C250PA.
- Square body high-speed semiconductor fuse.
- 250 A rated current.
- 1250 VAC IEC / 1300 VAC UL rated voltage.
- aR ultra-fast operating characteristic.
- Plain blade terminals.
- Integrated striker indicator.
- Silver-plated contact surfaces.
- High breaking capacity up to 126 kA AC.
Reliable Protection for Industrial Power Electronics
The Mersen B301163 has been engineered to interrupt high fault currents before excessive thermal or electrical stress can damage expensive semiconductor devices. Its low-energy let-through characteristics help maximise equipment reliability, reduce maintenance costs and minimise costly production downtime.
Protistor® semiconductor fuses are widely specified by equipment manufacturers around the world thanks to their high interrupting capacity, dependable 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.
