Why Choose the Mersen Q300026 Protistor® High-Speed Fuse?
The Mersen Q300026 is a genuine Protistor® Size 31 square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive power electronic devices in demanding industrial applications. Identified by the catalogue number PC31UD69V630D1A, this ultra-fast aR characteristic fuse is specifically designed to protect semiconductors including IGBTs, thyristors and diodes against damaging short-circuit currents.
As part of the renowned Mersen Protistor® Size 31 series, the Q300026 combines rapid fault clearing, high breaking capacity and low let-through energy to maximise equipment reliability and minimise costly downtime. Its robust ceramic square body, silver-plated contacts and integrated striker indicator make it ideal for modern power conversion equipment and industrial automation systems.
With a 630 A current rating, 690 V AC IEC and 700 V AC UL voltage rating, the Mersen Q300026 is ideally suited to protecting variable speed drives, UPS systems, converters, inverters, motor drives and other semiconductor-based power equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 630 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL rated operation.
- Ultra-fast aR operating characteristic for semiconductor protection.
- Integrated striker indicator for quick fuse status identification.
- High breaking capacity protects valuable power electronic equipment.
Key Features
- Mersen Protistor® Size 31 series.
- Manufacturer part number: Q300026.
- Catalogue number: PC31UD69V630D1A.
- 630 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR ultra-fast operating characteristic.
- Square body ceramic construction with silver-plated contact surfaces.
- DIN 110 blade terminals with integrated striker indicator.
Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic components from destructive short-circuit currents before permanent damage occurs. Their exceptionally low let-through energy helps extend equipment life while reducing maintenance costs and unplanned downtime in industrial installations.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, UPS systems, rectifiers, converters, soft starters, renewable energy equipment and other semiconductor-based power electronics requiring fast and dependable circuit protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Semiconductor protection in industrial automation systems.
