Why Choose the Mersen B300657 High-Speed Semiconductor Fuse?
The Mersen B300657 is a premium square body high-speed semiconductor fuse engineered to provide reliable protection for modern power electronic equipment. Part of the proven Mersen Protistor® Size 70 series, this fuse is specifically designed to protect sensitive semiconductor devices including IGBTs, thyristors, GTOs and power diodes from damaging short-circuit currents.
Featuring an ultra-fast aR operating characteristic, the B300657 rapidly interrupts fault currents while minimising the energy let through to protected components. Its solidified sand construction, pure silver fuse elements, silver-plated contact surfaces and integrated striker indicator provide dependable performance and extended service life in demanding industrial applications.
With a 200 A rated current and 1250 V AC IEC / 1300 V AC UL voltage ratings, the Mersen B300657 is ideally suited for industrial drives, power converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion applications.
Key Advantages
- High-speed aR semiconductor protection fuse for industrial power electronics.
- 200 A current rating for demanding semiconductor applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Ultra-fast operation reduces damaging fault energy.
- Integrated striker indicator for fuse status monitoring.
- Silver-plated contacts provide excellent conductivity and durability.
Key Features
- Mersen Protistor® Size 70 series.
- Catalogue Number: A130UD70LI200.
- 200 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body Size 70 construction.
- Long slotted blade terminals.
- Integrated striker indicator for remote indication.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before they can damage expensive semiconductor devices. Their low let-through energy helps extend equipment life, improve system reliability and reduce maintenance costs across industrial power conversion systems.
The Mersen Protistor® Size 70 range provides dependable protection for converters, motor drives, UPS systems and renewable energy equipment. Its advanced construction delivers excellent short-circuit protection for today's high-performance semiconductor applications.
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.
