Fuse insert NH2 gG 250A 500V for NH fuse holder Eti-Polam 004185232

NH2 gG fuse insert from Eti-Polam rated 250 A and 500 V is intended for use in NH (knife) fuse systems where full-range protection of cables and equipment is required. The fuse provides gG (general-purpose) characteristic, combining overload and short-circuit interruption in one element. It is manufactured to fit NH2-size holders and is used in industrial distribution panels and motor protection circuits as part of low- and medium-voltage switchgear.

Advantages

The fuse insert offers full-range gG protection that covers both overloads and short-circuits, simplifying coordination with downstream protection. Its standardized NH2 size ensures compatibility with NH-type fuse holders and simplifies replacement. The 250 A rating with 500 V voltage class allows use across a range of industrial distribution applications, and the solid construction supports reliable operation under normal switching and fault conditions.

Suitable for

• Industrial distribution boards and switchgear requiring NH2 fuse elements
• Motor protection and feeder circuits with need for gG full-range protection
• Protection of cables and transformers in low- and medium-voltage installations
• Retrofit or replacement in systems that use NH2-size fuses

Key specifications

• Rated current: 250 A
• Rated voltage: 500 V AC
• Characteristic: gG (general-purpose, full-range)
• Physical size: NH2 (standard NH knife fuse dimension)
• Intended application: low- and medium-voltage NH fuse systems

How to use

Install the NH2 fuse insert into a compatible NH fuse holder following the panel manufacturer’s procedures and with the supply de-energized. Verify that the fuse rating and characteristic match the electrical design and that mounting orientation follows the holder instructions. After installation, re-energize the circuit and confirm correct operation. Replace only with the same size and appropriate rated fuse element to maintain protection coordination.

Usage recommendations

Select the 250 A gG insert only when its current and voltage ratings match the circuit design and coordination study. Use in combination with correctly rated NH fuse holders and ensure clearances, thermal conditions, and fault level requirements are satisfied. For routine maintenance, inspect holders and contacts for corrosion or looseness before inserting a new fuse element.