Why Choose the Mersen C330190 Protistor® High-Speed Semiconductor Fuse?
The Mersen C330190, also identified by the catalogue reference DN000UB50V400L, is a Protistor® NH Size 000 high-speed semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment. Featuring an aR operating characteristic, it delivers rapid short-circuit protection for semiconductor devices including IGBTs, thyristors, diodes and rectifiers, helping minimise equipment damage and downtime.
Manufactured with precision silver fuse elements embedded in solidified silica sand inside a robust ceramic body, the C330190 provides outstanding current-limiting performance, low let-through energy (I²t) and excellent breaking capacity. The integrated striker mechanism (L indicator) allows operation of an external microswitch for remote fuse status monitoring in critical industrial applications.
Rated at 400 A with a 500 V AC IEC / UL voltage rating and 320 V DC UL capability, this NH000 DIN 80 fuse is ideally suited for variable speed drives, industrial converters, UPS systems, renewable energy equipment and other demanding semiconductor protection applications.
Key Advantages
- Protistor® aR ultra-fast semiconductor protection.
- 400 A rated current.
- 500 V AC IEC / UL rated voltage.
- Integrated striker for remote fuse indication.
- Excellent current-limiting characteristics with low I²t.
- Compact NH Size 000 DIN 80 construction.
Key Features
- Mersen Protistor® semiconductor fuse.
- Manufacturer part number C330190.
- Catalogue reference DN000UB50V400L.
- NH Size 000 square-body fuse.
- 400 A rated current.
- 500 V AC IEC / UL rating.
- 320 V DC UL rating.
- aR operating class.
- DIN 80 blade terminals.
- Integrated striker (L indicator).
- Silver-plated contacts.
- Ultra-fast current-limiting protection.
Reliable Protection for Industrial Power Electronics
The Mersen C330190 has been specifically developed for protecting high-value semiconductor equipment from destructive short-circuit currents. Its ultra-fast aR characteristic rapidly interrupts fault currents before excessive thermal energy can damage expensive electronic components, helping maximise equipment reliability and reduce maintenance costs.
Its NH000 DIN 80 construction allows installation into compatible industrial fuse bases while the integrated striker enables remote indication when used with an auxiliary microswitch, making it ideal for critical automation and power conversion equipment.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- UPS systems.
- Battery chargers.
- Industrial inverters.
- Renewable energy systems.
- Motor control centres.
- Semiconductor power protection.
