Why Choose the Mersen E300131 Protistor® High Speed Fuse?
The Mersen E300131, catalogue number A070UD30KI125, is a premium square body high speed semiconductor fuse designed to provide ultra-fast protection for modern power electronic equipment. As part of the proven Mersen Protistor® Size 30 series, this fuse safeguards sensitive semiconductor devices including IGBTs, thyristors, MOSFETs and diodes against damaging short circuits and fault currents.
Engineered for demanding industrial environments, the E300131 delivers excellent current limiting performance with very low let-through energy, helping to minimise equipment damage and maximise system uptime. Precision die-cut fuse elements embedded in solidified sand, combined with silver-plated contact surfaces, provide dependable long-term protection for critical power conversion systems.
With a 125 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen E300131 is ideally suited for variable frequency drives, UPS systems, converters, rectifiers, renewable energy installations and industrial automation equipment requiring reliable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 125 A current rating for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, MOSFETs and diode modules.
- Low I²t characteristics reduce damage during fault conditions.
- Robust square body construction with silver-plated contacts.
Key Features
- Mersen Protistor® Size 30 series.
- 125 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Short slotted blade terminals.
- Integrated striker indicator for remote status indication.
- 200 kA breaking capacity.
- RoHS compliant construction.
Reliable Protection for Industrial Power Electronics
High speed semiconductor fuses are designed to interrupt fault currents before they can damage expensive power electronic components. The Mersen Protistor® range provides exceptionally fast fault clearing with low I²t values, making it ideal for protecting today's high-performance semiconductor devices.
The E300131 offers dependable protection for industrial motor drives, power converters and automation systems, helping improve equipment reliability while reducing costly downtime and maintenance requirements.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and standby power systems.
- Renewable energy inverter systems.
- Industrial automation and OEM machinery.
