Why Choose the Mersen E300223 Protistor® High Speed Fuse?
The Mersen E300223, catalogue number PC33UD69V900EF, is a premium square body high speed semiconductor fuse engineered to provide ultra-fast protection for modern power electronic equipment. As part of the trusted Mersen Protistor® Size 33 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short circuits and fault currents.
Designed for demanding industrial environments, the E300223 delivers exceptional current limiting performance with low let-through energy, helping minimise damage to expensive equipment and maximise system uptime. Precision die-cut fuse elements embedded in solidified sand, combined with silver-plated contact surfaces and non-magnetic hardware, provide dependable long-term protection for critical power conversion systems.
With a 900 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen E300223 is ideally suited for variable frequency drives, UPS systems, converters, rectifiers, renewable energy installations and industrial automation equipment requiring reliable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 900 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Provides dependable protection for IGBTs, thyristors and diode modules.
- Low I²t characteristics help minimise equipment damage.
- Robust square body construction with silver-plated contacts.
Key Features
- Mersen Protistor® Size 33 series.
- 900 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body fuse with open slot blade terminals.
- Integrated striker indicator for remote status indication.
- 200 kA breaking capacity.
- RoHS compliant construction.
Reliable Protection for Industrial Power Electronics
High speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range delivers exceptionally fast fault clearing with low I²t values, making it ideal for protecting modern power conversion equipment while improving equipment reliability and reducing downtime.
The E300223 is widely used in industrial motor drives, renewable energy systems, power converters and automation equipment, delivering dependable protection for critical semiconductor devices operating in demanding industrial environments.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and standby power systems.
- Renewable energy inverter systems.
- Industrial automation and OEM machinery.
