Why Choose the Mersen J075908 Protistor® Semiconductor Fuse?
The Mersen J075908 is a high performance Protistor® BS88-4 high speed semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power electronic equipment. Designed specifically for protecting semiconductor devices such as IGBTs, thyristors, diodes and rectifiers, it delivers exceptional current limiting performance and high breaking capacity for demanding industrial applications.
Manufactured as part of the trusted Mersen Protistor® BS88-4 2×17×49 mm range, the J075908 features a gR operating class, enabling protection against both overloads and short circuits. Its British Standard BS88-4 construction allows straightforward installation into compatible fuse holders, making it suitable for OEM equipment, maintenance and replacement projects.
With a 140 A current rating and a 690 V AC IEC voltage rating, the J075908 is ideal for industrial drives, UPS systems, power converters, renewable energy systems and other power electronic installations requiring dependable semiconductor protection.
Key Advantages
- High speed Protistor® semiconductor fuse for power electronic equipment.
- 140 A current rating for demanding industrial applications.
- 690 V AC IEC rated voltage.
- gR operating class providing overload and short-circuit protection.
- Excellent current limiting characteristics reduce semiconductor damage.
- BS88-4 2×17×49 mm format for simple installation.
Key Features
- Mersen Protistor® BS88-4 series.
- 140 A rated current.
- 690 V AC IEC rated voltage.
- 700 V AC / 700 V DC UL rated.
- gR operating class.
- 2×17×49 mm British Standard body.
- Ceramic fuse body.
- Extremely high breaking capacity.
Reliable Protection for Industrial Power Electronics
High speed semiconductor fuses are designed to interrupt fault currents before sensitive electronic components can be damaged. Their exceptional current limiting performance helps minimise thermal stress, reduce repair costs and improve the reliability of industrial power conversion systems.
The Mersen Protistor® BS88-4 range is widely used throughout industrial automation, renewable energy and motor control applications where reliable semiconductor protection and dependable circuit coordination are essential.
Typical Applications
- Variable frequency drives.
- Industrial rectifiers.
- UPS systems.
- Power converters and inverters.
- Renewable energy equipment.
- Industrial motor control systems.
