Why Choose the Mersen J097459 Protistor® High Speed Semiconductor Fuse?
The Mersen J097459 is a Protistor® BS Standard high speed semiconductor fuse designed to provide rapid short-circuit protection for sensitive power electronic equipment. Engineered specifically for semiconductor applications, it helps protect IGBTs, thyristors, diodes, rectifiers and power converters by limiting fault current and reducing damaging let-through energy.
Manufactured in a 2 × 36 × 55 mm BS Standard body, the J097459 features an aR operating class, making it suitable for partial-range semiconductor protection where fast fault clearance is essential. The fuse incorporates a striker indicator and L-bracket terminals for straightforward installation into compatible industrial fuse assemblies.
With a 325 A current rating and a 690 V AC rating, the Mersen J097459 is ideal for industrial drives, UPS systems, converters, inverters, renewable energy equipment and other demanding power electronic applications requiring dependable semiconductor protection.
Key Advantages
- High speed Protistor® semiconductor protection fuse.
- 325 A current rating for demanding industrial applications.
- 690 V AC rated voltage.
- aR operating class for semiconductor short-circuit protection.
- Excellent current-limiting characteristics reduce semiconductor damage.
- 2 × 36 × 55 mm BS Standard construction with striker indication.
Key Features
- Mersen Protistor® series.
- Manufacturer part number J097459.
- Catalogue number BS236UM69V325T.
- 325 A rated current.
- 690 V AC rated voltage.
- aR operating class.
- Integrated striker indicator.
- L-bracket terminal connections.
Reliable Protection for Industrial Power Electronics
Power semiconductor devices can fail within milliseconds during a short-circuit event. High speed semiconductor fuses are engineered to interrupt fault currents before excessive thermal or mechanical stress damages expensive electronic components.
The Mersen Protistor® range combines low let-through energy with excellent current-limiting performance, helping improve equipment reliability, minimise repair costs and reduce production downtime in industrial power conversion systems.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- Power converters.
- UPS systems.
- Industrial rectifiers.
- Renewable energy systems.
