Why Choose the Mersen NH00GG40V63 NH Fuse-Link?
The Mersen NH00GG40V63 is a reliable DIN NH gG low-voltage fuse-link designed to provide full-range protection against overloads and short circuits in electrical distribution systems. With an NH00 body size, 63 A rated current and 400 V AC rating, it is suitable for protecting cables, conductors, switchgear and connected industrial equipment.
The NH00GG40V63 uses a high-quality ceramic body with silver-plated copper blade contacts to support dependable electrical performance under demanding operating conditions. Its current-limiting action helps reduce the thermal and electrodynamic stresses caused by high prospective short-circuit currents, limiting potential damage to downstream equipment.
Designed for installation in compatible NH00 fuse bases and switch-fuse assemblies, this Mersen fuse-link provides a practical protection solution for distribution boards, control panels, machinery and industrial power systems. Its gG operating characteristic allows the fuse to protect circuits across the full fault-current range without requiring an additional short-circuit protection device.
Key Advantages
- Full-range gG protection against overload and short-circuit currents.
- 63 A rated current for cable, conductor and equipment protection.
- 400 V AC voltage rating for low-voltage distribution systems.
- High 100 kA AC breaking capacity for demanding fault conditions.
- Current-limiting performance reduces stress on downstream equipment.
- Standardised NH00 format supports installation in compatible fuse bases.
- Manufactured in accordance with recognised IEC and VDE requirements.
Key Features
- Mersen NH gG fuse-link range.
- NH00 fuse size.
- 63 A rated current.
- 400 V AC rated voltage.
- gG full-range operating characteristic.
- High-strength ceramic fuse body.
- Silver-plated copper blade contacts.
- Blade-contact construction for NH fuse bases and disconnectors.
- Suitable for general-purpose cable and line protection.
Reliable Protection for Electrical Distribution Systems
The Mersen NH00GG40V63 interrupts fault currents by melting its calibrated fuse element when current exceeds the permitted operating range. This rapid current-limiting action helps prevent excessive heating of cables and reduces the mechanical forces placed on switchgear during severe short-circuit conditions.
Its gG characteristic provides protection across the complete operating range, from sustained overloads through to high-level short circuits. This makes the fuse-link suitable for use as the primary protective device in many industrial and commercial distribution circuits when correctly selected and coordinated.
Typical Applications
- Industrial power distribution boards.
- Low-voltage switchgear assemblies.
- Cable and feeder circuit protection.
- Machinery and control panels.
- Commercial electrical distribution systems.
- NH fuse bases and switch-fuse disconnectors.
