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MERSEN FUSE NH 4A 500A 690V GG MID IND NH4AGG69V500
Mersen NH4AGG69V500 DIN NH size 4a gG fuse-link rated at 500 A, 690 V AC and 250 V DC with centre indicator and live gripping lugs for industrial low-voltage circuit protection.
£217.52
Why Choose the Mersen NH4AGG69V500 NH Fuse-Link?
The Mersen D1054300 (NH4AGG69V500) is a high-capacity DIN NH size 4a gG fuse-link designed to provide comprehensive protection for low-voltage power distribution systems, industrial switchgear and electrical installations. Rated at 500 A with a maximum operating voltage of 690 V AC and 250 V DC, it delivers reliable full-range protection against both overloads and short-circuit faults.
Part of the trusted Mersen NH gG 690 V fuse-link range, the NH4AGG69V500 features a robust ceramic body, silver-plated blade contacts, non-isolated live gripping lugs and a centre-mounted blown fuse indicator. Its high breaking capacity and DIN NH compliance make it suitable for demanding industrial power distribution applications.
The D1054300 is designed for installation in compatible NH fuse bases and switch-fuse disconnectors where dependable circuit protection and long service life are essential. As with all NH fuse systems, installation and replacement should only be carried out by suitably qualified electrical professionals.
Key Advantages
- General-purpose gG protection against overloads and short circuits.
- 500 A current rating for heavy-duty industrial applications.
- 690 V AC / 250 V DC operation.
- 120 kA AC breaking capacity for dependable fault interruption.
- Centre-mounted indicator enables rapid fuse status identification.
- DIN NH size 4a construction for compatibility with standard NH fuse systems.
Key Features
- Mersen NH gG 690 V fuse-link series.
- DIN NH size 4a.
- 500 A rated current.
- 690 V AC / 250 V DC rated voltage.
- General-purpose gG utilisation category.
- Centre-mounted blown-fuse indicator.
- Live, non-isolated gripping lugs.
- Silver-plated blade contacts.
- Ceramic insulating body.
- RoHS compliant.
Reliable Protection for Industrial Power Distribution
The Mersen NH4AGG69V500 provides full-range protection by safely interrupting overload and short-circuit currents before damage can occur to cables, busbars, switchgear and connected electrical equipment. Its high fault-breaking capability makes it particularly suitable for heavy-duty industrial power distribution systems.
Designed in accordance with the DIN NH standard, this fuse-link is compatible with standard NH fuse systems and should only be installed or replaced by qualified personnel using the correct NH fuse handling equipment.
Typical Applications
- Industrial power distribution boards.
- Low-voltage switchgear assemblies.
- Main incoming electrical supplies.
- Cable and busbar protection.
- Switch-fuse disconnectors.
- Industrial manufacturing facilities.
- Commercial and utility electrical installations.
Technical Specifications
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| Current | 500 A | |
|---|---|---|
| Fuse Indication | Visual indicator | |
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH4a | |
| Fuse Class | gG | |
| Manufacturer | Mersen | |
| Series | NH gG 690 V Fuse-Links | |
| Model | NH4AGG69V500 | |
| Item number | D1054300 | |
| Product type | NH low-voltage fuse-link | |
| Fuse characteristic | gG | |
| Fuse size | NH4a | |
| Rated current | 500 A | |
| Rated AC voltage | 690 V AC | |
| Rated DC voltage | 250 V DC | |
| Breaking capacity | 120 kA AC | |
| Power dissipation | 42.5 W | |
| Indication system | Centre indicator | |
| Gripping lugs | Live / non-isolated | |
| Body width | 100 mm | |
| Weight | Approx. 2.58 kg | |
| EAN | 3605340588514 | |
| Compliance | RoHS compliant | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen D1054300 used for?
This NH fuse-link protects industrial electrical distribution systems, cables and equipment against overloads and short-circuit faults.
What is the current rating of this fuse?
The NH4AGG69V500 has a rated current of 500 A.
What voltage is this fuse designed for?
It is rated for operation at up to 690 V AC and 250 V DC.
What does the gG characteristic mean?
The gG utilisation category provides full-range protection against both overload and short-circuit currents for general-purpose low-voltage electrical circuits.
Does this fuse include a blown-fuse indicator?
Yes. The D1054300 incorporates a centre-mounted indicator for quick visual identification when the fuse has operated.
Trusted by Electrical Professionals Worldwide
Mersen NH fuse-links are trusted by electrical engineers, panel builders and industrial maintenance teams worldwide for dependable low-voltage circuit protection, high interrupting capacity and long-term operational reliability.
