Why Choose the Mersen K300136 Protistor® High-Speed Fuse?
The Mersen K300136 (A070UD30KI350) is a premium square body high-speed semiconductor fuse designed to provide advanced protection for sensitive power electronic equipment. As part of the proven Mersen Protistor® Size 30 series, this ultra-fast aR fuse delivers reliable protection for diodes, thyristors, IGBTs and MOSFET devices used in demanding industrial power conversion applications.
Engineered for high-performance industrial environments, the K300136 combines rapid fault interruption with low let-through energy to minimise semiconductor damage during short circuits. Its ceramic body, silver-plated contacts and solidified sand construction provide excellent electrical performance, high interrupting capacity and dependable long-term reliability.
With a rated current of 350 A and a 690 V AC IEC / 700 V AC UL voltage rating, the K300136 is ideal for variable speed drives, UPS systems, industrial converters, renewable energy equipment and other high-power electronic installations requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 350 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, MOSFETs, thyristors and power diodes.
- High interrupting capacity for superior fault protection.
- Integrated striker indicator for remote monitoring.
Key Features
- Mersen Protistor® Size 30 series.
- Catalogue number A070UD30KI350.
- 350 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Slotted blade terminals.
- Integrated striker indicator.
- Silver-plated contact surfaces.
- Ceramic body with solidified sand arc-quenching technology.
- Low I²t characteristics for semiconductor protection.
Reliable Semiconductor Protection for Industrial Power Systems
High-speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components can be damaged. Their ultra-fast operation and low let-through energy improve equipment reliability, reduce maintenance costs and minimise production downtime in demanding industrial applications.
The Mersen Protistor® Size 30 range is trusted by OEMs and industrial engineers for protecting variable speed drives, converters, UPS systems and renewable energy equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable speed drives.
- Industrial power converters.
- IGBT inverter protection.
- Thyristor and diode rectifiers.
- UPS systems.
- Renewable energy inverters.
- Motor control centres.
- Industrial automation equipment.
