Why Choose the Mersen Q300486 Protistor® High-Speed Fuse?
The Mersen Q300486 is a genuine Protistor® Size 70 square body high-speed semiconductor fuse designed to provide outstanding protection for modern power electronic equipment. Identified by the catalogue number PC70UD13C125TF, this ultra-fast aR characteristic fuse-link is engineered specifically to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents.
Part of the trusted Mersen Protistor® Size 70 range, the Q300486 combines rapid fault clearing, low let-through energy and high interrupting capacity to maximise equipment reliability whilst reducing costly downtime. The fuse features flush-end metric threaded terminals, an integrated striker indicator and silver-plated contact surfaces for dependable long-term operation.
With a 125 A current rating, 1250 V AC IEC and 1300 V AC UL voltage ratings, the Mersen Q300486 is ideally suited to protecting industrial drives, renewable energy converters, UPS systems, rectifiers, inverters and other demanding power conversion equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 125 A current rating.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Ultra-fast aR operating characteristic.
- Flush-end metric threaded terminals.
- Integrated striker indicator.
- High interrupting capacity for critical semiconductor protection.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 70.
- Manufacturer part number: Q300486.
- Catalogue number: PC70UD13C125TF.
- Current rating: 125 A.
- Voltage rating: 1250 V AC IEC / 1300 V AC UL.
- Fuse characteristic: aR ultra-fast.
- Terminal type: Flush-end metric threaded terminals.
- Indicator: Integrated striker.
Advanced Semiconductor Protection
The Protistor® Size 70 range has been developed specifically to provide state-of-the-art protection for high-value semiconductor devices. Pure silver fuse elements embedded in solidified sand deliver extremely low let-through energy and excellent arc control, helping minimise damage during short-circuit faults.
These fuses are widely used wherever high-power semiconductor devices require dependable protection, including renewable energy installations, industrial drives, UPS systems, converters and power supplies.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Renewable energy inverters.
- UPS systems.
- Power converters and rectifiers.
- High-power semiconductor equipment.
- Industrial automation systems.
