Why Choose the Mersen Q300233 Protistor® High-Speed Fuse?
The Mersen Q300233 is a genuine Protistor® Size 33 square body high-speed semiconductor fuse engineered to provide maximum protection for sensitive power electronic equipment operating in demanding industrial environments. Identified by the catalogue number A070UD33LI900, this ultra-fast aR characteristic fuse-link is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents.
As part of the trusted Mersen Protistor® Size 33 series, the Q300233 combines rapid fault interruption, low let-through energy and a high breaking capacity to maximise equipment reliability whilst minimising costly downtime. Its robust ceramic square body, silver-plated contact surfaces and long slotted blade terminals with an integrated striker indicator make it ideal for modern power conversion equipment.
With a 900 A current rating, 690 V AC IEC and 700 V AC UL voltage ratings, the Mersen Q300233 is ideally suited to protecting industrial drives, UPS systems, converters, inverters, rectifiers and renewable energy power conversion 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.
- Long slotted blade terminals with integrated striker indicator.
- High interrupting capacity of 200 kA for superior fault protection.
Key Features
- Mersen Protistor® Size 33 series.
- Manufacturer part number: Q300233.
- Catalogue number: A070UD33LI900.
- 900 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR ultra-fast operating characteristic.
- Ceramic square body construction.
- Long slotted blade terminals with striker indicator.
Advanced Semiconductor Protection
Protistor® semiconductor fuses are specifically developed to protect modern power electronic devices from destructive short-circuit currents before permanent damage can occur. Their exceptionally low let-through energy helps extend equipment life, reduce maintenance costs and improve overall system reliability.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, UPS systems, industrial motor drives, renewable energy converters, soft starters and power conversion 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.
- Industrial automation and process control systems.
