Fusível NH Mersen NH3 400A gG 500V com pentes de contacto sob tensão

In industrial power distribution, protecting cables and lines from overcurrent and short circuits is critical to prevent costly downtime and equipment damage. The Mersen 1B383.000000 NH3 fuse link delivers reliable full-range protection for demanding applications, ensuring your electrical infrastructure operates safely and efficiently.

Who is it for

This fuse is engineered for electrical engineers, panel builders, and maintenance professionals who require robust protection in industrial environments, including motor control centers, switchgear, and power distribution boards. It is ideal for cable and line protection where high breaking capacity and dependable performance are non-negotiable.

Main features

• High breaking capacity of 120 kA at 500 V AC for superior short-circuit protection.
• Operating class gG (general purpose) provides full-range protection for both overload and short-circuit currents.
• NH3 size with 400 A rated current suits heavy-duty industrial applications.
• Live gripping lugs (spannungsführend) allow safe installation and removal under voltage using appropriate tools.
• Ceramic body with silver-plated copper contacts ensures durability and low contact resistance.
• Top indicator provides clear visual indication of fuse status.
• Complies with IEC 60269-2 for international safety and performance standards.

Specifications

• Fuse size: NH3
• Rated current: 400 A
• Rated voltage: 500 V AC
• Operating class: gG
• Breaking capacity: 120 kA
• Standard: IEC 60269-2
• Indicator type: Top indicator
• Mounting type: NH fuse base
• Body material: Ceramic
• Contact material: Silver-plated copper
• Power dissipation: 40 W
• Rated frequency: 50/60 Hz
• Operating temperature range: -5°C to +40°C
• Design feature: Live gripping lugs
• Protection type: Full-range protection

Tips

Always verify that the fuse's rated voltage and current match your system requirements. Use appropriate NH fuse pullers and personal protective equipment when handling live gripping lugs. Store fuses in a dry, clean environment to maintain performance. For optimal protection, coordinate with upstream and downstream protective devices.