Why Choose the Mersen Z300080 Protistor® High-Speed Fuse?
The Mersen Z300080 (PC33UD69V800TF) is a premium square body high-speed semiconductor fuse designed to deliver exceptional protection for modern power electronic equipment. As part of the proven Mersen Protistor® Size 33 series, this ultra-fast acting aR fuse protects IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents while helping maximise system reliability and uptime.
Designed for demanding industrial environments, the Z300080 provides excellent current limitation with very low let-through energy, reducing thermal stress on sensitive power electronics. Its robust ceramic square body, silver-plated contact surfaces and integrated striker provide dependable protection and simple fuse status indication for maintenance personnel.
With a rated current of 800 A and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen Z300080 is ideal for variable frequency drives, UPS systems, power converters, renewable energy installations and heavy-duty industrial automation equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 800 A current rating for demanding industrial power systems.
- 690 V AC IEC / 700 V AC UL voltage capability.
- Protects IGBTs, thyristors, diodes and semiconductor power modules.
- Integrated striker indicator for remote monitoring.
- Low I²t characteristics minimise damage during short-circuit faults.
Key Features
- Mersen Protistor® Size 33 series.
- Catalogue number: PC33UD69V800TF.
- 800 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 engineered to interrupt fault currents before they can damage expensive power electronic components. Their ultra-fast response limits thermal and mechanical stress, extending equipment life while reducing maintenance costs and downtime.
The Mersen Protistor® Size 33 range is trusted by OEMs, panel builders and industrial engineers worldwide for protecting industrial drives, converters, UPS equipment and renewable energy systems operating in demanding applications.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control equipment.
- Power converters and rectifiers.
- UPS and backup power systems.
- Renewable energy inverters.
- Industrial automation and power distribution systems.
