Why Choose the Mersen G300616 Protistor® High-Speed Fuse?
The Mersen G300616 (PC71UD11C550EF) is a premium square body high-speed semiconductor fuse engineered to provide rapid protection for sensitive power electronic equipment. Part of the proven Mersen Protistor® Size 71 aR series, it is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices used in industrial power conversion systems.
Featuring an ultra-fast aR operating characteristic, the fuse limits fault energy during short circuits, helping prevent costly damage to semiconductor components. Its solidified sand arc-quenching technology, silver-plated contacts and non-magnetic hardware ensure dependable performance and long service life in demanding industrial environments.
With a 550 A current rating, 1100 V AC IEC / 1200 V AC UL voltage rating and an integrated striker indicator, the G300616 is ideal for industrial drives, UPS systems, renewable energy equipment, converters and other high-power electronic installations.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for critical power electronics.
- 550 A current rating for demanding industrial applications.
- 1100 V AC IEC and 1200 V AC UL voltage ratings.
- Provides reliable protection for IGBTs, thyristors, SCRs and diode modules.
- Integrated striker indicator for easy fuse status monitoring.
- Low let-through energy helps minimise semiconductor damage.
Key Features
- Mersen Protistor® Size 71 aR series.
- Catalogue number: PC71UD11C550EF.
- 550 A rated current.
- 1100 V AC IEC / 1200 V AC UL rated voltage.
- Square body fuse with open slot blade terminals.
- Integrated striker indication.
- Silver-plated contact surfaces.
- Designed specifically for semiconductor protection applications.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before excessive thermal energy can damage expensive electronic components. Their ultra-fast response significantly reduces let-through current, helping maximise equipment reliability and minimise downtime.
The Mersen Protistor® range is trusted by OEMs and maintenance engineers worldwide for protecting industrial drives, converters, UPS systems and renewable energy equipment where reliable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS and backup power systems.
- Renewable energy inverters.
- Protection of IGBT, SCR and diode modules.
