Why Choose the Mersen H300134 Protistor® High-Speed Fuse?
The Mersen H300134 is a high-performance Protistor® square body semiconductor fuse engineered to deliver ultra-fast protection for sensitive power electronic equipment. Designed for demanding industrial applications, this 250 A high-speed fuse protects semiconductors including IGBTs, thyristors, diodes and MOSFETs against damaging short-circuit currents.
As part of the trusted Mersen Protistor® Size 30 aR series, the H300134 offers excellent current-limiting performance with low let-through energy (I²t), helping reduce damage to valuable power conversion equipment. Its square body construction with slotted blade terminals and integrated striker indicator provides straightforward installation and simplified maintenance.
Rated for 690 V AC (IEC) and 700 V AC (UL), the Mersen H300134 is ideally suited for protecting variable frequency drives, UPS systems, converters, soft starters and other semiconductor-based industrial equipment requiring dependable high-speed fault protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 250 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, MOSFETs, thyristors and power diodes.
- Integrated striker indicator for easier maintenance.
- Low I²t design helps minimise semiconductor damage during fault conditions.
Key Features
- Mersen Protistor® Size 30 aR series.
- 250 A rated current.
- 690 V AC (IEC) / 700 V AC (UL).
- Square body ceramic fuse construction.
- Slotted blade terminals for secure installation.
- Integrated striker indication.
- Silver-plated contacts for reliable electrical performance.
- Current-limiting ultra-fast semiconductor protection.
Reliable Protection for Power Electronics
Semiconductor protection fuses are specifically designed to interrupt high fault currents before excessive thermal energy can damage sensitive electronic devices. Their ultra-fast operating characteristics and low I²t values make them essential for protecting modern industrial power conversion equipment.
The Mersen H300134 is widely used by equipment manufacturers and maintenance engineers to provide dependable protection for industrial drives, converters, UPS systems and other semiconductor-based electrical equipment operating under demanding conditions.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Soft starters.
- Industrial automation and power electronic equipment.
