Why Choose the Mersen K330243 Protistor® High-Speed Semiconductor Fuse?
The Mersen K330243, catalogue number DN00UB69V315L, is a premium NH Size 00 high-speed semiconductor fuse link designed to provide ultra-fast protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® range, it safeguards semiconductor devices such as IGBTs, thyristors, diodes and rectifiers against damaging short-circuit currents while maintaining maximum equipment reliability.
Featuring an aR utilisation category, the K330243 is specifically engineered for semiconductor short-circuit protection. Its silver-plated contacts, precision die-cut fuse elements and solidified silica sand construction deliver exceptionally low let-through energy, high interrupting capacity and dependable performance in demanding industrial environments.
With a rated current of 315 A, a rated voltage of 690 V AC (IEC) and a robust NH Size 00 DIN 80 blade-contact design with striker indicator, this fuse is ideally suited to industrial drives, power converters, UPS systems and renewable energy installations where rapid fault clearance is essential.
Key Advantages
- Ultra-fast semiconductor protection fuse for industrial power electronics.
- 315 A rated current for high-power applications.
- 690 V AC IEC voltage rating.
- aR operating characteristic provides rapid short-circuit protection.
- Very low let-through energy helps protect expensive semiconductor devices.
- Integrated striker indicator for remote monitoring capability.
Key Features
- Mersen Protistor® K330243 (DN00UB69V315L).
- 315 A nominal current rating.
- 690 V AC IEC / 450 V DC UL rated operation.
- aR utilisation category.
- NH Size 00 square-body fuse.
- DIN 80 silver-plated blade contacts.
- Integrated striker indicator.
- Ceramic body with solidified silica sand filling.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before excessive energy can damage sensitive electronic components. Their extremely fast operating characteristics minimise thermal stress on semiconductor devices, helping improve system reliability and reduce costly production downtime.
The Mersen K330243 is engineered for industrial power conversion systems requiring dependable semiconductor protection. Its NH Size 00 construction and integrated striker indicator allow straightforward installation into compatible fuse holders while providing reliable fault indication and maintenance support.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- Servo drives and motion control systems.
- UPS systems.
- Renewable energy inverter equipment.
- Protection of IGBTs, thyristors, diodes and semiconductor modules.
