Why Choose the Mersen H330126 High Speed Semiconductor Fuse?
The Mersen H330126 is a premium Protistor® square body high speed semiconductor fuse designed to provide rapid protection for sensitive power electronic equipment. Engineered for modern industrial power conversion systems, this fuse delivers exceptional short-circuit protection for semiconductors including IGBTs, thyristors and diodes, helping to minimise equipment damage and reduce costly downtime.
Manufactured as part of the trusted Mersen Protistor® NH 000 series, the H330126 features ultra-fast aR operating characteristics, silver-plated contacts and a robust square body design with striker and L bracket mounting. The fuse construction uses die-cut elements embedded in solidified sand to provide excellent current limiting performance and low let-through energy during fault conditions.
With a 75 A current rating and a 690 V AC IEC voltage rating, the H330126 is ideally suited for variable frequency drives, UPS systems, power converters, industrial rectifiers and renewable energy equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast Protistor® semiconductor fuse for sensitive electronic equipment.
- 75 A current rating for industrial power applications.
- 690 V AC IEC rated voltage.
- Fast acting aR characteristic for semiconductor protection.
- Excellent current limiting performance with low I²t.
- Square body NH000 design with striker and L bracket mounting.
Key Features
- Mersen Protistor® series.
- 75 A rated current.
- 690 V AC IEC / 500 V DC UL rated voltage.
- Ultra-fast aR operating class.
- NH 000 square body construction.
- Integrated striker indicator.
- Silver-plated contact surfaces.
- L bracket mounting arrangement.
Reliable Protection for Industrial Power Electronics
High speed semiconductor fuses are designed to interrupt fault currents before damage occurs to expensive electronic components. Their ultra-fast operation helps protect inverters, drives and converters while reducing repair costs and improving overall system reliability.
The Protistor® range has been developed specifically for semiconductor protection, providing high interrupting capacity, low arc energy and dependable operation in demanding industrial applications.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Industrial rectifiers.
- Renewable energy equipment.
