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MERSEN FUSE NH 3 630A 400V GG SGL NH3GG40V630-1
Mersen NH3GG40V630-1 NH3 gG low-voltage fuse link rated at 630 A and 400 V AC with isolated gripping lugs, double indication and 100 kA breaking capacity.
£45.35
Why Choose the Mersen NH3GG40V630-1 NH Fuse Link?
The Mersen NH3GG40V630-1 is a heavy-duty NH3 gG low-voltage fuse link designed to protect electrical distribution systems, industrial switchgear and high-current power circuits against overloads and short-circuit currents. Manufactured to DIN NH standards, this full-range fuse link provides reliable protection for demanding industrial and commercial electrical installations.
With a rated current of 630 A and a rated operating voltage of 400 V AC, the NH3GG40V630-1 is ideal for high-current power distribution applications. Its gG operating characteristic provides comprehensive protection from sustained overloads through to severe short-circuit faults, helping safeguard electrical equipment and minimise downtime.
The fuse link features isolated gripping lugs, silver-plated blade contacts, a high-strength ceramic body and a double indication system for rapid identification after fuse operation. It is designed for installation in compatible NH fuse bases and switch-fuse disconnectors used throughout industrial power distribution systems.
Key Advantages
- Full-range gG fuse protection against overloads and short circuits.
- 630 A rated current for high-current industrial power distribution.
- 400 V AC rated voltage for low-voltage electrical systems.
- 100 kA AC breaking capacity for dependable fault interruption.
- Double visual indicator enables rapid fuse-status identification.
- Isolated gripping lugs improve handling safety during maintenance.
Key Features
- Mersen DIN NH standard fuse link.
- NH3 fuse size.
- 630 A rated current.
- 400 V AC rated voltage.
- Full-range gG operating characteristic.
- 100 kA AC breaking capacity.
- Double operation indicator.
- Isolated gripping lugs.
- Silver-plated copper blade contacts.
- High-strength ceramic insulating body.
Reliable Protection for High-Current Electrical Systems
The Mersen NH3GG40V630-1 is engineered to protect electrical cables, conductors and distribution equipment by safely interrupting overloads and high short-circuit currents before damage can occur. Its full-range gG characteristic makes it suitable for general-purpose protection across industrial and commercial low-voltage installations.
Designed for installation in compatible NH fuse bases and switch-fuse disconnectors, this fuse combines robust ceramic construction, high interrupting capacity and a double indication system to provide dependable long-term protection. Installation and replacement should always be carried out by qualified electrical personnel using suitable NH fuse handling equipment.
Typical Applications
- Industrial power distribution systems.
- Switch-fuse disconnectors.
- Cable and conductor protection.
- Main distribution boards.
- Industrial machinery.
- Commercial electrical installations.
- Motor feeder circuits.
- Heavy industrial switchgear.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Current | 630 A | |
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gG | |
| Manufacturer | Mersen | |
| Series | NH Fuse-links gG 400 VAC | |
| Model | NH3GG40V630-1 | |
| Manufacturer item number | M223755 | |
| Product type | NH low-voltage fuse link | |
| Fuse characteristic | gG | |
| Fuse size | NH3 | |
| Rated current | 630 A | |
| Rated voltage | 400 V AC | |
| Current type | AC | |
| Breaking capacity | 100 kA AC | |
| Body width | 71.9 mm | |
| Indication system | Double indicator | |
| Gripping-lug design | Isolated tags | |
| Terminal material | Silver-plated copper | |
| Terminal type | Blade contacts | |
| Body material | Ceramic | |
| Mounting type | NH fuse base | |
| Power dissipation | Approx. 39 W | |
| Weight | Approx. 1.05 kg | |
| EAN | 8430399022079 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3GG40V630-1 used for?
This fuse link protects electrical distribution circuits, cables and industrial equipment against overloads and short-circuit currents.
What is the rated current of this fuse?
The Mersen NH3GG40V630-1 has a rated current of 630 A.
What voltage is this fuse designed for?
The fuse is rated for operation on systems up to 400 V AC.
What does the gG classification mean?
The gG classification identifies a full-range fuse designed to protect electrical circuits against both overloads and short-circuit faults.
Does this fuse include an operating indicator?
Yes. The NH3GG40V630-1 features a double visual indicator that clearly shows when the fuse has operated.
Trusted Protection for Industrial Electrical Systems
Mersen NH gG fuse links are trusted worldwide by electrical engineers, panel builders and maintenance professionals for dependable protection of industrial low-voltage power distribution systems.
