Mersen NH3 315A gG 500V AC Fuse-Link with Live Gripping Lugs L213151

NH fuse-links of size NH3 with gG operating class protect cables and lines in industrial power distribution up to 500 V AC. The 315 A fuse-link interrupts fault currents up to 120 kA, limiting let-through energy and preventing damage to downstream equipment.

Advantages

The silver-plated copper blade contacts ensure low contact resistance and reliable current transfer. The ceramic body withstands high thermal and mechanical stress, while the live gripping lugs (spannungsführend) allow safe installation and removal under voltage using appropriate tools. A top indicator provides clear visual indication of fuse status.

Suitable for

• General industrial power distribution systems
• Protection of cables and lines against overload and short-circuit
• Motor feeders and transformer circuits
• Low-voltage switchgear and distribution boards

Key specifications

• Fuse type: NH fuse-link, size NH3
• Rated current: 315 A
• Rated voltage: 500 V AC
• Operating class: gG (general purpose, full-range breaking capacity)
• Breaking capacity: 120 kA
• Standards: IEC 60269-1, IEC 60269-2
• Indicator: top indicator
• Mounting: blade contact
• Body material: ceramic
• Contact material: silver-plated copper
• Power dissipation: 36 W
• Design feature: live gripping lugs (spannungsführend)
• Frequency: 50/60 Hz

Recommendations

Use with NH3 fuse bases and disconnectors that provide adequate contact pressure and insulation coordination. Ensure correct torque when tightening connections and follow all applicable electrical safety regulations.