Why Choose the Mersen K300090 Protistor® High-Speed Fuse?
The Mersen K300090 (PC30UD69V100EF) is a premium square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® Size 30 series, this ultra-fast aR fuse protects diodes, thyristors, IGBTs and MOSFET devices used in demanding industrial power conversion applications.
Designed to deliver rapid fault interruption with low let-through energy, the K300090 helps minimise semiconductor damage during short circuits while reducing equipment downtime. Its ceramic body, silver-plated contacts and solidified sand construction provide outstanding electrical performance, high interrupting capacity and long-term reliability in industrial environments.
With a rated current of 100 A and a 690 V AC IEC / 700 V AC UL voltage rating, the K300090 is ideally suited for variable speed drives, UPS systems, industrial converters, renewable energy systems and other high-performance power electronic installations requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 100 A current rating for industrial power applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, MOSFETs, thyristors and power diodes.
- High 200 kA breaking capacity for dependable fault protection.
- Integrated striker indicator for remote monitoring.
Key Features
- Mersen Protistor® Size 30 series.
- Catalogue number PC30UD69V100EF.
- 100 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Open slot 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 widely used 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.
