Why Choose the Mersen C300451 A070UD33TTI1000 High-Speed Fuse?
The Mersen C300451 A070UD33TTI1000 is a premium Protistor® Size 33 aR square body high-speed semiconductor fuse, engineered to provide exceptional protection for modern power conversion equipment. Designed specifically for safeguarding IGBTs, thyristors, diodes and rectifiers, it delivers ultra-fast fault interruption to minimise damage caused by short circuits and overload conditions.
Manufactured with precision die-cut fuse elements embedded in solidified silica sand, the fuse offers excellent current-limiting performance, low let-through energy and outstanding interrupting capability. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term operation, while the integrated striker indicator supports remote status monitoring when used with a compatible microswitch.
Rated at 1000 A with voltage ratings of 690 V AC (IEC) and 700 V AC (UL), the C300451 is ideally suited for industrial drives, UPS systems, renewable energy installations, converters and other demanding semiconductor protection applications. It features flush ends with UNC threaded terminals for secure bolted installation.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 1000 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage ratings.
- 200 kA interrupting capacity.
- Integrated striker indicator for remote fuse monitoring.
- Flush ends with UNC threaded terminals for secure bolted mounting.
Key Features
- Mersen Protistor® Size 33 aR series.
- Catalogue number: A070UD33TTI1000.
- Square body ceramic construction.
- Silver-plated contacts.
- Current-limiting design.
- Low I²t characteristics for semiconductor protection.
- RoHS compliant.
- Designed for international industrial applications.
Engineered for Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically designed to interrupt fault currents before sensitive power electronic components can be damaged. Their extremely fast operating characteristics significantly reduce thermal stress and let-through energy, improving equipment reliability while helping minimise costly downtime.
The Protistor® Size 33 range is trusted globally by OEMs, panel builders and industrial engineers for protecting inverters, motor drives, UPS systems, rectifiers and renewable energy equipment operating up to 690 V AC.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- Motor drives.
- UPS systems.
- Rectifiers.
- Renewable energy converters.
- Industrial automation equipment.
