Why Choose the Mersen R300142 Protistor® High-Speed Fuse?
The Mersen R300142 is a high-performance Protistor® square body semiconductor fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices. Designed for demanding industrial applications, it safeguards components such as IGBTs, thyristors, diodes and MOSFETs used in power conversion, motor drives, UPS systems and renewable energy equipment.
As part of the trusted Mersen Protistor® Size 30 aR series, the R300142 delivers rapid fault clearing with low let-through energy, helping minimise damage to valuable semiconductor components. Its robust square body construction, silver-plated contacts and high interrupting capacity make it a dependable solution for critical industrial electrical protection.
Rated at 160 A with a 690 V AC (IEC) / 700 V AC (UL) voltage rating, the R300142 features slotted long blade terminals with an integrated striker, allowing easy installation and optional remote fuse indication in modern electrical systems.
Key Advantages
- Ultra-fast aR semiconductor fuse for sensitive power electronics.
- 160 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Provides excellent protection for IGBTs, diodes, thyristors and MOSFETs.
- Integrated striker indicator for optional remote fuse monitoring.
- High breaking capacity and low I²t for maximum semiconductor protection.
Key Features
- Mersen Protistor® Size 30 high-speed fuse.
- aR ultra-fast operating characteristic.
- 160 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- Square body construction with long slotted blade terminals.
- Integrated mechanical striker indicator.
- Silver-plated contact surfaces.
- Designed specifically for semiconductor protection applications.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect sensitive electronic power devices from damaging short circuits. Their ultra-fast operating characteristics significantly reduce fault energy, helping extend equipment life and minimise costly downtime.
The Mersen Protistor® range is widely used throughout industrial automation, renewable energy, power conversion and motor control systems where reliable semiconductor protection is essential for safe and efficient operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS and power supply systems.
- Renewable energy inverters.
- Power converters and rectifiers.
- Industrial automation and control panels.
