Why Choose the Mersen Z300011 Protistor® High-Speed Fuse?
The Mersen Z300011 (PC31UD69V250A) is a premium square body high-speed semiconductor fuse developed to provide advanced protection for modern power electronic equipment. As part of the renowned Mersen Protistor® Size 31 series, this ultra-fast acting aR fuse safeguards sensitive semiconductor devices including IGBTs, thyristors and diodes used in industrial power conversion systems.
Designed to minimise damage during short-circuit events, the Z300011 delivers outstanding current limitation and low let-through energy, helping maximise equipment uptime while protecting valuable electronic components. Its square body construction, silver-plated DIN 80 blade terminals and integrated striker ensure reliable performance in demanding industrial environments.
With a rated current of 250 A and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen Z300011 is ideal for variable frequency drives, UPS systems, converters, renewable energy equipment and other industrial applications requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 250 A current rating for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage capability.
- Protects IGBTs, thyristors, diodes and semiconductor modules.
- Integrated striker indication for remote monitoring.
- Low I²t performance helps minimise semiconductor damage during faults.
Key Features
- Mersen Protistor® Size 31 series.
- Catalogue number: PC31UD69V250A.
- 250 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Ultra-fast aR operating characteristic.
- DIN 80 silver-plated blade terminals.
- Integrated striker for fuse operation indication.
- Ceramic body with high interrupting capacity.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic devices against destructive short-circuit currents. Their ultra-fast operating characteristics reduce let-through energy, helping extend the service life of converters, drives and other industrial equipment.
The Mersen Protistor® Size 31 range is widely used by OEMs, panel builders and maintenance engineers for protecting industrial power conversion equipment where dependable semiconductor protection is critical to maintaining productivity.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and backup power equipment.
- Renewable energy inverters.
- Industrial automation and power distribution systems.
