MERSEN FUSE NH 4 630A 500V GG MID IND NH4GG50V630

Why Choose the Mersen NH4GG50V630 NH Fuse-Link?

The Mersen NH4GG50V630 is a heavy-duty DIN NH gG fuse-link designed to provide comprehensive protection against overloads and short circuits in low-voltage electrical distribution systems. As part of the trusted Mersen NH gG 500 V AC fuse-link range, it is engineered for demanding industrial, commercial and infrastructure applications where reliable circuit protection is essential.

Manufactured in accordance with IEC standards, this NH Size 4 fuse-link combines excellent current limiting performance with a high breaking capacity to minimise damage during electrical faults. The robust ceramic body, live gripping lugs and centre indicator provide safe installation, dependable operation and quick identification of a blown fuse.

With a rated current of 630 A, a 500 V AC rating and a 250 V DC rating, the NH4GG50V630 is ideally suited for protecting switchgear, feeders, motor circuits, distribution panels and industrial power systems. Its NH Size 4 format ensures compatibility with standard DIN NH fuse bases.

Key Advantages

• Full-range gG protection against overloads and short circuits.
• 630 A rated current for high-power electrical distribution.
• 500 V AC and 250 V DC ratings.
• High current limiting performance reduces fault energy.
• Centre indicator provides rapid visual fuse status identification.
• Compatible with standard DIN NH Size 4 fuse bases.
• Suitable for demanding industrial and commercial installations.

Key Features

• Mersen NH gG fuse-link series.
• DIN NH Size 4.
• 630 A rated current.
• 500 V AC rated voltage.
• 250 V DC rated voltage.
• General-purpose gG operating characteristic.
• Centre blown-fuse indicator.
• Live gripping lugs.
• Ceramic fuse body.
• RoHS compliant.

Reliable Protection for Low-Voltage Distribution Systems

The Mersen NH4GG50V630 provides full-range protection for electrical distribution circuits by safely interrupting overload and short-circuit currents before damage can occur. Its gG operating characteristic makes it suitable for protecting cables, switchgear, feeders and general electrical installations across a wide range of industrial applications.

Its excellent current limiting performance helps reduce thermal and mechanical stress on connected equipment, improving system reliability while reducing maintenance costs and downtime.

Typical Applications

• Industrial power distribution systems.
• Main switchboards.
• Electrical feeder protection.
• Motor control centres.
• Commercial buildings.
• OEM electrical equipment.
• Infrastructure and utility installations.