Why Choose the Mersen NH3GG50V125-1 125A 500V NH3 gG Fuse Link?
The Mersen NH3GG50V125-1, based on Mersen catalogue number NH3GG50V125 and manufacturer item number T235169, is a 125 A NH size 3 gG fuse link designed for full-range protection of cables and electrical equipment in low-voltage distribution systems. Its gG utilisation category provides protection across the overcurrent range, covering both overload and short-circuit conditions when correctly selected for the installation.
Rated at 500 V AC and 250 V DC, this NH3 fuse link is designed for installation in compatible NH fuse bases and fuse switch disconnectors. It incorporates live metal gripping lugs and Mersen's double indication system, providing clear fuse-operation indication for maintenance and fault identification.
The NH3GG50V125 provides a rated AC breaking capacity of 120 kA, supporting reliable interruption of high prospective fault currents. At its rated current of 125 A, power dissipation is approximately 12.2 W, while the fuse body has a nominal width of 51 mm.
Key Advantages
- 125 A gG full-range protection against overload and short-circuit currents.
- 500 V AC and 250 V DC rated voltage capability.
- High 120 kA AC rated breaking capacity for demanding fault conditions.
- Standard NH size 3 format for compatible NH fuse equipment.
- Double indication system assists with identification of fuse operation.
- Robust NH construction for industrial and commercial low-voltage distribution systems.
Key Features
- Mersen DIN NH standard fuse link.
- 125 A rated current.
- 500 V AC / 250 V DC rated voltage.
- gG utilisation category for full-range general-purpose protection.
- NH size 3 construction.
- 120 kA AC rated breaking capacity.
- 12.2 W power dissipation at rated current.
- Double indicator with live metal gripping lugs.
High-Capacity Full-Range Circuit Protection
A gG fuse link provides full-range protection for general-purpose low-voltage circuits, interrupting overcurrents from overload conditions through to high-level short-circuit faults. This makes the NH3GG50V125 suitable for protecting cables, conductors and electrical equipment where a 125 A NH3 fuse with the appropriate characteristics is specified.
The NH system combines blade-contact fuse links with compatible fuse bases and dedicated replacement equipment to provide robust, replaceable circuit protection. With its 125 A rating, 500 V AC capability and 120 kA AC breaking capacity, this Mersen fuse link is suited to demanding industrial and commercial low-voltage distribution installations.
Typical Applications
- Industrial low-voltage electrical distribution systems.
- Cable and conductor overload and short-circuit protection.
- Main and sub-distribution switchboards.
- Compatible NH3 fuse switch disconnectors and fuse bases.
- Industrial machinery and equipment supply circuits.
- General-purpose 125 A NH3 fuse protection applications.
