Why Choose the Mersen F099572 Protistor® High-Speed Fuse?
The Mersen F099572, catalogue number BS217UT69V75, is a high-speed Protistor® semiconductor protection fuse designed to provide reliable protection for sensitive power semiconductor devices. Manufactured to IEC 60269-1, IEC 60269-4 and BS88-4 standards, this fuse delivers extremely fast fault interruption and high breaking capacity to protect valuable power electronic equipment from damaging short-circuit currents.
Featuring a 2 × 17 × 49 mm British Standard fuse-link construction, the F099572 has a 75 A current rating and is rated for 690 V AC (IEC) and 700 V AC/DC (UL). Its gR operating characteristic provides both overload and short-circuit protection for semiconductor devices, making it suitable for demanding industrial applications.
As part of the trusted Mersen Protistor® range, this fuse is widely used by OEMs, panel builders and industrial engineers to protect IGBTs, thyristors, diodes, rectifiers and other semiconductor devices in power conversion and automation systems.
Key Advantages
- High-speed semiconductor protection fuse.
- 75 A current rating for industrial power electronics.
- 690 V AC IEC and 700 V AC/DC UL ratings.
- gR characteristic providing overload and short-circuit protection.
- Extremely high breaking capacity for enhanced equipment protection.
- Suitable for industrial drives, UPS systems, converters and power supplies.
Key Features
- Mersen Protistor® series.
- Catalogue number: BS217UT69V75.
- Reference number: F099572.
- 75 A rated current.
- 690 V AC IEC operating voltage.
- 700 V AC/DC UL rating.
- gR semiconductor protection characteristic.
- 2 × 17 × 49 mm BS88-4 fuse-link format.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are designed to clear fault currents before excessive thermal energy can damage sensitive power semiconductor devices. Their low let-through energy helps maximise equipment reliability while reducing maintenance costs and unplanned production downtime.
The Mersen Protistor® range is engineered for demanding industrial environments and is trusted worldwide for protecting drives, converters, inverters, UPS systems and other power electronic equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and backup power equipment.
- Industrial automation systems.
- Power electronic and renewable energy equipment.
