Why Choose the Mersen B300611 High-Speed Semiconductor Fuse?
The Mersen B300611 is a premium square body high-speed semiconductor fuse developed to provide exceptional protection for modern power electronic equipment. Part of the trusted Mersen Protistor® Size 71 series, this fuse is engineered to protect sensitive semiconductor devices including IGBTs, thyristors, diodes and rectifiers operating in demanding industrial environments.
Designed with an ultra-fast aR operating characteristic, the B300611 rapidly interrupts fault currents before excessive energy can damage valuable semiconductor components. Its solidified sand construction, silver-plated contact surfaces and integrated striker indicator provide reliable operation, high interrupting performance and long service life.
With a 315 A current rating and 1250 V AC IEC / 1300 V AC UL voltage ratings, the Mersen B300611 is ideal for protecting industrial motor drives, power converters, UPS systems, renewable energy equipment and other high-power semiconductor applications.
Key Advantages
- High-speed aR semiconductor protection fuse for critical power electronics.
- 315 A rated current suitable for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Ultra-fast fault interruption reduces damaging energy let-through.
- Integrated striker indicator for fuse status monitoring.
- Silver-plated contacts ensure excellent conductivity and durability.
Key Features
- Mersen Protistor® Size 71 series.
- Catalogue Number: PC71UD13C315EF.
- 315 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Open slot blade terminals (EF style).
- Integrated striker indicator for remote indication.
- Low I²t design for maximum semiconductor protection.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before they can damage expensive power electronic devices. Their low let-through energy helps protect semiconductor assemblies, reduce maintenance costs and improve overall equipment reliability in demanding industrial applications.
The Mersen Protistor® Size 71 range offers proven protection for converters, inverters, motor drives and UPS systems. Its advanced construction provides excellent cycling capability together with dependable short-circuit protection for modern semiconductor equipment.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and backup power equipment.
- Renewable energy inverters.
- Industrial semiconductor protection.
