Why Choose the Mersen L300183 Protistor® High-Speed Fuse?
The Mersen L300183, catalogue number PC32UD69V800A, is a high-performance Protistor® square body semiconductor protection fuse designed to safeguard sensitive power electronic devices against short circuits and fault currents. Engineered for demanding industrial applications, this ultra-fast aR characteristic fuse delivers exceptional protection for IGBTs, thyristors, diodes and other semiconductor devices operating in power conversion systems.
As part of the renowned Mersen Protistor® Size 32 series, the L300183 combines high interrupting capacity with low let-through energy, helping to minimise equipment damage and reduce costly downtime. Its integrated striker indicator enables remote indication and optional microswitch operation for enhanced maintenance and safety monitoring.
With an 800 A current rating, 690 V AC IEC and 700 V AC UL voltage ratings, this fuse is ideally suited for heavy-duty industrial drives, UPS systems, converters, renewable energy equipment and other semiconductor-based power electronics requiring reliable overcurrent protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 800 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage capability.
- Protects IGBTs, thyristors, diodes and power semiconductors.
- Integrated striker indicator for remote fault indication.
- Low I²t values help minimise semiconductor damage during faults.
Key Features
- Mersen Protistor® Size 32 series.
- Catalogue number: PC32UD69V800A.
- 800 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- DIN 80 silver-plated blade terminals.
- Integrated striker indication system.
- Square body bolted fuse construction.
Reliable Protection for Power Electronics
Semiconductor fuses are specifically engineered to interrupt extremely high fault currents before sensitive electronic components suffer catastrophic damage. The Mersen Protistor® range provides exceptionally low energy let-through characteristics, extending the operational life of converters, inverters and industrial drive systems.
The L300183 is designed for modern industrial power electronics where fast fault clearance, dependable operation and high interrupting capacity are essential. Its robust square body construction and silver-plated terminals ensure long service life even in demanding industrial environments.
Typical Applications
- Variable speed motor drives.
- Industrial power converters.
- IGBT and thyristor protection.
- UPS and backup power systems.
- Renewable energy inverters.
- Industrial power electronics and automation equipment.
