Why Choose the Mersen J300710 Protistor® High-Speed Semiconductor Fuse?
The Mersen J300710 is a premium Protistor® Size 70 aR square body high-speed semiconductor fuse designed to provide advanced protection for modern power conversion equipment. Specifically engineered for safeguarding sensitive semiconductor devices, it delivers ultra-fast fault interruption and excellent current limiting to protect IGBTs, thyristors, GTOs, rectifiers and power diodes against damaging short-circuit currents.
Part of Mersen's globally trusted Protistor® semiconductor fuse range, the J300710 features pure silver fuse elements embedded in solidified sand, silver-plated contact surfaces and an integrated striker for remote indication. This robust construction provides dependable performance in demanding industrial environments while helping reduce maintenance costs and unplanned downtime.
With a 280 A rated current and a 1200 V AC IEC / 1300 V AC UL voltage rating, the J300710 is ideal for industrial drives, converters, inverters, UPS systems, renewable energy installations and other high-power semiconductor applications requiring reliable circuit protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 280 A current rating for demanding industrial applications.
- 1200 V AC IEC / 1300 V AC UL voltage rating.
- Excellent current-limiting characteristics minimise fault energy.
- Integrated striker for remote indication and monitoring.
- Designed to maximise semiconductor reliability and equipment uptime.
Key Features
- Mersen Protistor® Size 70 aR series.
- 280 A rated current.
- 1200 V AC (IEC) / 1300 V AC (UL) rated voltage.
- Square body fuse with DIN 110 blade connections.
- Integrated striker indicator.
- Pure silver fuse elements with silver-plated contacts.
- Solidified sand construction for controlled arc performance.
- Designed for protection of IGBTs, SCRs, GTOs, diodes and rectifiers.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before excessive thermal or electrical energy reaches sensitive semiconductor devices. Their low let-through energy helps improve equipment reliability while reducing maintenance costs and minimising unplanned downtime.
The Mersen Protistor® Size 70 range is trusted worldwide by OEMs, panel builders and industrial engineers for demanding power conversion applications where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial motor control systems.
- Power converters and inverters.
- UPS systems.
- Renewable energy installations.
- Battery energy storage systems.
- Industrial power supplies.
- Semiconductor protection circuits.
