Why Choose the Mersen C300704 High-Speed Semiconductor Fuse?
The Mersen C300704 is a premium Protistor® Size 31 high-speed semiconductor fuse engineered to deliver outstanding protection for sensitive power electronic components in demanding industrial environments. As part of the trusted Mersen Protistor® Size 31 aR series, it provides ultra-fast fault interruption to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short-circuit currents.
Designed for modern power conversion equipment, the C300704 combines low let-through energy with an exceptionally high breaking capacity to maximise equipment protection while reducing costly downtime. Precision die-cut fuse elements, silver-plated contacts and solidified sand construction ensure dependable long-term performance in demanding applications.
With a 550 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen C300704 is ideally suited for variable frequency drives, industrial inverters, UPS systems and renewable energy converters. It features long slotted blade terminals and an integrated striker indicator for simplified monitoring and maintenance.
Key Advantages
- Ultra-fast aR semiconductor fuse for protecting power electronic equipment.
- 550 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Very low let-through energy helps minimise semiconductor damage.
- Integrated striker indicator for maintenance and remote monitoring.
- High 200 kA AC breaking capacity for reliable fault protection.
Key Features
- Mersen Protistor® Size 31 aR series.
- 550 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- Ultra-fast aR operating characteristic.
- Long slotted blade terminals.
- Integrated striker indication.
- Silver-plated contact surfaces.
- Designed for protecting IGBTs, SCRs, thyristors and power semiconductor modules.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically engineered to protect valuable power electronic components by interrupting fault currents before they can damage sensitive semiconductor devices. Their low I²t performance helps reduce thermal stress, improve equipment reliability and minimise maintenance costs.
The Mersen Protistor® Size 31 range is widely specified by OEMs and industrial engineers for protecting variable frequency drives, industrial motor drives, renewable energy converters, UPS systems and power conversion equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy converters.
- Protection of IGBT, SCR and diode modules.
