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MERSEN FUSE NH 3 425A 690V GG NH3GG69V425
Mersen NH3GG69V425 NH3 gG fuse-link rated at 425 A, 690 V AC and 250 V DC for full-range overload and short-circuit protection.
£39.62
Why Choose the Mersen NH3GG69V425 NH Fuse-Link?
The Mersen NH3GG69V425 is a high-performance NH size 3 gG fuse-link designed to provide full-range protection against overload and short-circuit currents in demanding industrial electrical systems. Rated at 425 A and 690 V AC, it is suitable for protecting high-current cables, conductors, switchgear and power distribution equipment.
Its gG utilisation category provides comprehensive protection throughout the fuse-link's operating range. The NH3GG69V425 can interrupt currents from low-level overcurrents through to severe short-circuit faults, while its current-limiting characteristics help reduce the thermal and electrodynamic stress imposed on downstream equipment.
The fuse-link features a durable ceramic body, standard NH blade contacts, live gripping lugs and a convenient double indication system. Manufactured in the DIN NH3 format, it can be installed in compatible NH fuse bases and switch-fuse assemblies used in industrial power distribution installations.
Key Advantages
- Provides full-range overload and short-circuit protection.
- 425 A rated current for high-current industrial circuits.
- 690 V AC rating suitable for demanding power networks.
- 250 V DC rating supports compatible direct-current applications.
- Current-limiting performance helps reduce damaging fault energy.
- Double indication system enables convenient fuse status identification.
- Standard NH3 construction fits compatible industrial fuse equipment.
Key Features
- Mersen NH gG fuse-link series.
- NH3 fuse size.
- 425 A rated current.
- 690 V AC rated voltage.
- 250 V DC rated voltage.
- gG full-range operating characteristic.
- Double visual indication system.
- Live, non-isolated gripping lugs.
- Standard NH blade contacts.
- Robust ceramic insulating body.
- 71.9 mm body width.
Reliable Full-Range Protection for High-Current Circuits
The Mersen NH3GG69V425 protects cables and industrial equipment by interrupting both sustained overload currents and severe short-circuit faults. Its full-range gG characteristic allows it to act as the primary fuse protection device for correctly designed electrical circuits.
During high fault conditions, the fuse-link limits the peak current and energy passed to downstream equipment. This helps reduce damage to busbars, cables, switchgear and connected machinery while supporting safer and more reliable power distribution.
Typical Applications
- Industrial power distribution systems.
- Main switchboards and distribution panels.
- High-current cable and conductor protection.
- Industrial machinery and production equipment.
- Transformer secondary circuit protection.
- Switch-fuse and fuse-disconnector assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Dual indicator | |
|---|---|---|
| Current | 425 A | |
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gG | |
| Manufacturer | Mersen | |
| Series | NH gG Fuse-Links | |
| Model | NH3GG69V425 | |
| Manufacturer item number | E228509 | |
| Product type | NH general-purpose fuse-link | |
| Fuse size | NH3 | |
| Utilisation category | gG | |
| Rated current | 425 A | |
| Rated voltage AC | 690 V | |
| Rated voltage DC | 250 V | |
| Current type | AC / DC | |
| Breaking characteristic | Full-range breaking capacity | |
| Indication system | Double indicator | |
| Gripping lug design | Live / non-isolated tags | |
| Contact type | NH blade contacts | |
| Body material | Ceramic | |
| Body width | 71.9 mm | |
| EAN | 8430399026749 | |
| Applicable standards | IEC 60269 and DIN NH | |
| RoHS compliance | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3GG69V425 used for?
The Mersen NH3GG69V425 provides full-range overload and short-circuit protection for high-current cables, conductors and industrial electrical equipment.
What are the current and voltage ratings?
The fuse-link is rated at 425 A, 690 V AC and 250 V DC.
What does the gG classification mean?
The gG classification identifies a full-range general-purpose fuse-link that protects against both overload and short-circuit currents.
What fuse size is the NH3GG69V425?
This product is an NH3 size fuse-link with a body width of approximately 71.9 mm.
Which fuse holder is compatible?
The NH3GG69V425 is designed for use in compatible NH3 fuse bases, fuse disconnectors and switch-fuse assemblies. Installation should be completed by a qualified electrical professional.
Trusted Industrial Circuit Protection
Mersen NH fuse-links are widely specified by electrical engineers, panel builders and industrial equipment manufacturers for reliable protection of high-current power distribution systems.
