Why Choose the Mersen C300244 A070UD33KI1000 High-Speed Fuse?
The Mersen C300244 A070UD33KI1000 is a premium square body high-speed semiconductor fuse from the renowned Mersen Protistor® Size 33 aR series. Designed to deliver ultra-fast protection for sensitive semiconductor devices, it safeguards IGBTs, thyristors, diodes and rectifiers used in demanding industrial power conversion equipment.
The fuse is manufactured using precision die-cut fuse elements embedded in solidified silica sand to achieve excellent current-limiting performance, low let-through energy and a high interrupting capacity. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term reliability, while the integrated striker indicator enables straightforward fuse monitoring and maintenance.
With a 1000 A current rating, 690 V AC IEC and 700 V AC UL voltage ratings, the C300244 is ideally suited for high-power drives, converters, UPS systems, renewable energy installations and industrial automation equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor fuse for critical power electronics.
- 1000 A rated current for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage ratings.
- 200 kA breaking capacity for severe fault conditions.
- Integrated striker indicator for remote fuse monitoring.
- Short slotted blade terminals provide secure bolted installation.
Key Features
- Mersen Protistor® Size 33 aR series.
- 1000 A rated current.
- 690 V AC IEC / 700 V AC UL.
- Square body ceramic fuse construction.
- Short slotted blade terminals.
- Integrated striker indication.
- Current-limiting design with low I²t characteristics.
- Designed specifically for semiconductor protection.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before sensitive semiconductor devices can suffer thermal or electrical damage. Their rapid operation reduces fault energy, improves equipment reliability and helps minimise costly downtime in demanding industrial power conversion systems.
The Mersen Protistor® Size 33 range is trusted worldwide by OEMs, panel builders and industrial engineers for protecting converters, drives, UPS systems and renewable energy installations where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial converters.
- UPS systems.
- Renewable energy inverters.
- Motor control centres.
- Industrial automation equipment.
