Why Choose the Mersen Q300072 Protistor® High-Speed Fuse?
The Mersen Q300072 is a genuine Protistor® Size 32 square body high-speed semiconductor fuse engineered to deliver outstanding protection for sensitive power electronic equipment operating in demanding industrial environments. Identified by the catalogue number PC32UD69V900TF, this ultra-fast aR characteristic fuse-link is specifically designed to protect semiconductors including IGBTs, thyristors and diodes against damaging short-circuit currents.
Part of the proven Mersen Protistor® Size 32 range, the Q300072 combines rapid fault clearing, low let-through energy and a high breaking capacity to maximise equipment reliability while reducing costly downtime. Its robust ceramic square body, silver-plated contacts and integrated striker indicator make it ideal for industrial automation and power conversion systems.
With a 900 A current rating, 690 V AC IEC and 700 V AC UL voltage rating, the Mersen Q300072 provides dependable protection for variable speed drives, UPS systems, inverters, converters, motor drives and other semiconductor-based equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 900 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 32 series.
- Manufacturer part number: Q300072.
- Catalogue number: PC32UD69V900TF.
- 900 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 contacts.
- Flush-end metric threaded terminals with integrated striker.
Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically developed to protect sensitive power electronic devices from destructive fault currents before permanent damage can occur. Their exceptionally low let-through energy helps extend equipment life, reduce maintenance costs and minimise unplanned downtime.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, UPS systems, rectifiers, converters, soft starters and renewable energy equipment where dependable semiconductor protection is essential.
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.
