Why Choose the Mersen B201251 DIVGR50V80 High-Speed Fuse-Link?
The Mersen B201251 is a high-performance DIV high-speed fuse-link designed to protect power semiconductors and associated electrical equipment against damaging overcurrents and short circuits. Identified by the manufacturer reference DIVGR50V80, it combines an 80 A current rating with an ultra-fast gR operating characteristic.
As part of Mersen's RECTICUR semiconductor-protection range, the B201251 provides rapid current interruption and effective current limitation. Its fast response helps reduce the thermal and electrodynamic energy passed through to sensitive components such as rectifiers, power converters and industrial drive equipment.
The fuse-link is rated at 500 V AC and 440 V DC and uses the established DIV Diazed screw-fuse format. Its ceramic body offers dependable electrical insulation and resistance to high operating temperatures, making it suitable for demanding industrial power-electronics applications.
Key Advantages
- Ultra-fast gR protection for power semiconductors.
- 80 A rated current for industrial power circuits.
- Suitable for 500 V AC and 440 V DC applications.
- Current-limiting operation reduces damaging fault energy.
- High breaking capacity supports reliable short-circuit interruption.
- Standard DIV Diazed format for compatible fuse assemblies.
Key Features
- Mersen RECTICUR high-speed fuse-link.
- Manufacturer reference DIVGR50V80.
- 80 A nominal current rating.
- 500 V AC and 440 V DC voltage ratings.
- gR full-range semiconductor-protection characteristic.
- DIV fuse size.
- High breaking capacity of up to 100 kA.
- Ceramic insulating body.
- Designed for compatible DIN D screw-fuse holders.
Fast Protection for Power Semiconductors
Power semiconductors can be damaged by fault currents within a very short period. High-speed fuses use specially engineered fuse elements that interrupt excessive current rapidly, limiting the let-through energy before it reaches vulnerable semiconductor junctions.
The gR characteristic of the Mersen B201251 provides full-range protection against both overload and short-circuit currents. This makes it suitable for protecting semiconductor devices and the associated cables or conductors when installed within its specified operating limits.
Typical Applications
- Industrial rectifiers and power converters.
- Variable speed drives and soft starters.
- Power semiconductor assemblies.
- Industrial battery chargers and power supplies.
- Automation and machinery control equipment.
- DIV Diazed screw-fuse installations.
