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MERSEN FUSE DIV-RECTI.EINSATZ 80A 500V GR DIVGR50V80
Mersen B201251 DIVGR50V80 RECTICUR DIV gR high-speed fuse-link rated at 80 A, 500 V AC and 440 V DC for semiconductor protection.
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.
Technical Specifications
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| Current | 80 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Semiconductor | |
| Fuse Size | DIV | |
| Fuse Class | gR | |
| Manufacturer | Mersen | |
| Model | B201251 | |
| Manufacturer reference | DIVGR50V80 | |
| Product type | High-speed fuse-link | |
| Product range | RECTICUR | |
| Fuse system | D / Diazed | |
| Fuse size | DIV | |
| Utilisation category | gR | |
| Rated current | 80 A | |
| Rated voltage AC | 500 V | |
| Rated voltage DC | 440 V | |
| Breaking capacity | Up to 100 kA | |
| Body material | Ceramic | |
| Approximate body diameter | 37 mm | |
| Approximate body length | 63 mm | |
| Installation | Compatible DIV screw-fuse base | |
| Protection function | Semiconductor and power-electronics protection | |
| Standards | IEC / VDE |
Frequently Asked Questions
What is the Mersen B201251 used for?
The Mersen B201251 is a high-speed DIV fuse-link designed primarily to protect power semiconductors, rectifiers, converters and related industrial electrical equipment.
What current rating does the B201251 have?
The Mersen B201251 has a nominal current rating of 80 A.
What voltage is this fuse-link rated for?
The B201251 is rated for operation at up to 500 V AC and 440 V DC.
What does the gR characteristic mean?
The gR classification identifies a full-range, ultra-fast fuse designed to protect semiconductor devices against overload and short-circuit currents.
Which fuse holder is compatible with the B201251?
The fuse-link is designed for a compatible DIV Diazed screw-fuse base and must be installed with correctly rated system components.
Trusted Semiconductor Protection from Mersen
Mersen high-speed fuse-links are widely specified by power-electronics engineers, panel builders and equipment manufacturers for rapid fault interruption, effective current limitation and dependable semiconductor protection.
