Why Choose the Mersen Z300057 Protistor® High-Speed Fuse?
The Mersen Z300057 (PC30UD69V315TF) is a premium square body high-speed semiconductor fuse designed to provide superior protection for modern power electronic equipment. As part of the trusted Mersen Protistor® Size 30 series, this ultra-fast acting aR fuse protects sensitive semiconductor devices including IGBTs, MOSFETs, thyristors and diodes from damaging short-circuit currents.
Engineered for demanding industrial environments, the Z300057 delivers exceptional current limitation and low let-through energy, helping reduce damage to expensive power electronics while improving equipment reliability. Its ceramic square body construction, silver-plated contact surfaces and integrated striker provide dependable protection and easy fuse status indication.
With a rated current of 315 A and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen Z300057 is ideally suited for variable frequency drives, UPS systems, power converters, renewable energy equipment and industrial automation systems requiring reliable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 315 A current rating for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage capability.
- Protects IGBTs, MOSFETs, thyristors and power semiconductor modules.
- Integrated striker indicator for remote monitoring.
- Low I²t performance helps minimise damage during fault conditions.
Key Features
- Mersen Protistor® Size 30 series.
- Catalogue number: PC30UD69V315TF.
- 315 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Ultra-fast aR operating characteristic.
- Flush-end metric threaded terminals.
- Integrated striker for fuse operation indication.
- Ceramic body with silver-plated contact surfaces.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt short-circuit currents before they can damage valuable semiconductor devices. Their ultra-fast response reduces thermal stress and limits fault energy, helping maximise equipment life while reducing maintenance costs.
The Mersen Protistor® Size 30 range is trusted by OEMs, panel builders and maintenance engineers worldwide for protecting converters, industrial drives, UPS systems and renewable energy equipment operating in demanding industrial environments.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and backup power equipment.
- Renewable energy inverters.
- Industrial automation and power distribution systems.
