Why Choose the Mersen M302691 High-Speed Semiconductor Fuse?
The Mersen M302691 (D72GB60V200EF) is a Protistor® Size 72 square body high-speed semiconductor fuse designed to provide maximum protection for power semiconductor devices used in industrial DC drives, battery energy storage systems, renewable energy installations and other high-performance power conversion equipment. Engineered for demanding applications, it rapidly interrupts fault currents while minimising damage to sensitive electronic components.
Rated at 200 A with a 600 V DC (IEC) and 650 V DC (UL) voltage rating, the M302691 features a gR operating characteristic, integrated striker indicator and open slot blade silver-plated copper terminals. Its low I²t characteristics and high interrupting capacity help maximise equipment protection whilst reducing maintenance costs and downtime.
As part of the renowned Mersen Protistor® semiconductor protection range, the M302691 provides reliable protection for modern power electronics, including IGBTs, diodes, thyristors and other semiconductor devices operating under demanding DC conditions.
Key Advantages
- High-speed gR semiconductor protection for overload and short-circuit conditions.
- 200 A current rating with dual 600 V DC IEC / 650 V DC UL ratings.
- Low I²t minimises damage to power semiconductor devices.
- Integrated striker indicator for rapid fuse status identification.
- Open slot blade terminals simplify installation and maintenance.
- Designed for industrial drives, renewable energy and battery storage systems.
Key Features
- Mersen Protistor® Size 72 semiconductor fuse.
- Manufacturer reference: M302691.
- Catalogue number: D72GB60V200EF.
- Square body ceramic fuse construction.
- Open slot blade terminals with silver-plated copper contacts.
- Integrated striker indication system.
- Bolted mounting.
- RoHS compliant.
Reliable Protection for Modern Power Electronics
High-speed semiconductor fuses are specifically engineered to protect sensitive electronic devices by rapidly interrupting fault currents before excessive energy reaches IGBTs, diodes, thyristors and similar components. Their current-limiting performance helps improve equipment reliability whilst reducing repair costs and operational downtime.
The Protistor® range is widely used throughout industrial drives, renewable energy systems, battery energy storage installations, DC power conversion equipment and other applications where dependable semiconductor protection is essential.
Typical Applications
- Industrial DC drives.
- Battery energy storage systems (BESS).
- Renewable energy power conversion.
- Industrial converters and inverters.
- Protection of IGBTs, thyristors and diodes.
- High-performance DC power systems.
