Why Choose the Mersen J300181 Protistor® High-Speed Fuse?
The Mersen J300181 is a Protistor® Size 32 square body high-speed semiconductor fuse engineered to deliver exceptional protection for modern power electronic equipment. Featuring an aR ultra-fast operating characteristic, it is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents while helping maximise equipment reliability and minimise costly downtime.
Manufactured by Mersen, the J300181 carries catalogue number PC32UD69V630A and forms part of the renowned Protistor® Size 32 series. It features a 630 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and DIN 80 blade terminals with an integrated striker indicator, making it ideal for demanding industrial power conversion applications.
Constructed with a robust ceramic square body, silver-plated contact surfaces and a high 200 kA AC breaking capacity, the J300181 delivers dependable semiconductor protection for variable frequency drives, UPS systems, converters, renewable energy systems and other industrial power electronics.
Key Advantages
- Genuine Mersen Protistor® Size 32 semiconductor fuse.
- 630 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR ultra-fast protection for semiconductor devices.
- High 200 kA AC breaking capacity.
- Integrated striker indicator for simplified maintenance.
- Silver-plated contacts for dependable electrical performance.
- Low I²t helps minimise damage to sensitive power electronics.
Key Features
- Protistor® Size 32 square body construction.
- Catalogue number PC32UD69V630A.
- aR ultra-fast semiconductor protection.
- 630 A current rating.
- 690 V AC IEC / 700 V AC UL rating.
- DIN 80 blade terminals.
- Integrated striker indicator.
- Ceramic body with silver-plated contact surfaces.
- RoHS compliant.
Designed for Critical Power Electronics
The Mersen J300181 is specifically engineered to interrupt high fault currents before they can damage expensive semiconductor devices. Its low let-through energy and ultra-fast operating characteristic help extend equipment life, improve system reliability and reduce maintenance costs across demanding industrial applications.
Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and maintenance engineers for protecting industrial drives, converters, UPS systems, renewable energy equipment and other power conversion systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Soft starters.
- Industrial power supplies.
- Semiconductor protection systems.
