Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE NH 1 125A 500V GG NH12GG50V125
Mersen NH12GG50V125 DIN NH1 gG fuse-link rated 125 A and 500 V AC for full-range overload and short-circuit protection in low voltage distribution systems.
£6.54
Why Choose the Mersen NH12GG50V125 NH Fuse-Link?
The Mersen NH12GG50V125 is a reliable DIN NH low voltage gG fuse-link designed to protect cables, conductors and general electrical equipment against overloads and short circuits. Part of the established Mersen NH gG 500 V fuse-link range, it provides full-range circuit protection for demanding industrial and commercial power distribution applications.
Featuring a gG operating characteristic, this fuse-link can interrupt fault currents throughout its complete operating range. Its durable ceramic body, silver-plated blade contacts and visual indication system support dependable electrical performance and straightforward maintenance within compatible NH fuse bases and switch-disconnectors.
With a rated current of 125 A, a voltage rating of 500 V AC and a standard NH1 fuse size, the NH12GG50V125 is suitable for industrial switchboards, distribution panels, machinery and feeder circuits requiring dependable high-current protection.
Key Advantages
- Full-range gG protection against overloads and short circuits.
- 125 A rated current for industrial power distribution circuits.
- 500 V AC voltage rating for low voltage electrical systems.
- High breaking capacity for reliable interruption of substantial fault currents.
- Current-limiting operation helps reduce thermal and mechanical fault stress.
- Visual indication enables convenient fuse status inspection.
- Standard NH1 format for use with compatible fuse bases and switchgear.
- Robust ceramic construction supports dependable long-term operation.
Key Features
- Mersen NH gG 500 V fuse-link series.
- Catalogue number: NH12GG50V125.
- Mersen item number: Q217732.
- 125 A rated current.
- 500 V AC rated voltage.
- Full-range gG utilisation category.
- NH1 fuse size.
- Visual fuse operation indicator.
- Knife-blade terminals for secure electrical connection.
- Ceramic insulating body for thermal and mechanical durability.
- Designed for qualified installation in DIN NH fuse systems.
Reliable Protection for Low Voltage Distribution
The Mersen NH12GG50V125 provides full-range protection by responding to both sustained overloads and high-level short-circuit currents. During a fault, its fuse element operates to isolate the affected circuit and limit the energy passed to cables, switchgear and connected equipment.
Its NH1 construction and gG operating characteristic make it suitable for general industrial distribution duties where reliable fault clearance, high current capability and compatibility with standard NH fuse equipment are required.
Typical Applications
- Industrial power distribution boards.
- Low voltage switchgear assemblies.
- Cable and conductor protection.
- Incoming and outgoing feeder circuits.
- Motor control centres.
- Industrial machinery and production equipment.
- Commercial building distribution systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 125 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH1 | |
| Fuse Class | gG | |
| Manufacturer | Mersen | |
| Series | NH gG 500 V Fuse-Links | |
| Model | NH12GG50V125 | |
| Item number | Q217732 | |
| Product type | DIN NH low voltage fuse-link | |
| Fuse characteristic | gG | |
| Fuse size | NH1 | |
| Rated current | 125 A | |
| Rated voltage | 500 V AC | |
| Current type | AC | |
| Application category | General-purpose full-range protection | |
| Connection type | Knife-blade contacts | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Overall length | Approx. 135 mm | |
| Body length | Approx. 70.8 mm | |
| Overall height | Approx. 52.5 mm | |
| Overall width | Approx. 39.5 mm | |
| Standards | IEC 60269 / DIN NH |
Frequently Asked Questions
What is the Mersen NH12GG50V125 used for?
This NH fuse-link protects cables, conductors, distribution feeders and general electrical equipment against overloads and short circuits.
What is the rated current of the NH12GG50V125?
The NH12GG50V125 has a rated current of 125 A.
What voltage is this fuse-link designed for?
This Mersen fuse-link is designed for low voltage systems operating at up to 500 V AC.
What does the gG characteristic mean?
The gG characteristic identifies a general-purpose full-range fuse that protects electrical circuits against both overload currents and short circuits.
What fuse size is the NH12GG50V125?
The NH12GG50V125 is an NH1 size fuse-link intended for installation in a compatible DIN NH fuse base or switch-disconnector.
Trusted by Electrical Professionals Worldwide
Mersen NH fuse-links are widely specified by electrical contractors, panel builders, equipment manufacturers and industrial engineers for reliable circuit protection, effective current limitation and dependable operation in low voltage power distribution systems.
