Fuses

Keeping your grid reliable has never been more important. With the power usage patterns shifting dramatically in these challenging times, power operators need to do make everything they can to avoid outages.

VGC and NT series industrial fuses serve photovoltaic, wind and energy storage and other new-energy sectors, plus general low-voltage distribution and equipment, providing overload and short-circuit protection. VGC features a compact design with operating voltage up to AC 1000V / DC 800V, suitable for protecting low-voltage circuits at high voltage levels. NT covers 2A–1600A with operating voltage up to AC 800V and breaking capacity up to 120kA. Both series offer gG/gL (full-range), aM (motor circuits) and aR (semiconductor protection) utilization categories, suited to general-purpose, motor and semiconductor circuit protection.

VGC series Fuses

The VGC series are compact high-voltage fuses supporting up to AC1000V/DC800V, providing safe, efficient, and flexible circuit protection.

NT series Fuses

The NT series are high-capacity industrial fuses rated from 2A to 1600A, supporting up to AC800V with breaking capacities up to 120kA, delivering reliable protection for low-voltage power systems.

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FAQs

Q: Which VOZWEI VGC and NT fuse series are available?

A: VOZWEI offers two fuse series: the VGC compact fuse spans In 2A–125A in 14x51mm and 22x58mm sizes with AC400/500/690/1000V and DC440/800V ratings; the NT industrial fuse spans In 2A–1600A at AC800V. Both comply with IEC 60269.

Q: What are the main differences between VOZWEI VGC and NT fuses?

A: The VOZWEI VGC is a compact fuse for equipment and loop protection, 2A–125A in 14x51mm and 22x58mm sizes, with classes gG/gL, aM and aR. The VOZWEI NT is a wide-range industrial fuse, 2A–1600A at AC800V, with classes gG/gL, aM and aR.

Q: How do VOZWEI VGC and NT fuses differ on DC rating?

A: VOZWEI VGC fuses carry both AC and DC ratings (AC400/500/690/1000V, DC440/800V) with DC breaking capacity up to 50kA, suitable for solar DC circuits. The VOZWEI NT series is AC800V only with no DC rating and targets AC heavy-duty industrial circuits.

Q: How do I choose VOZWEI VGC or NT fuse rating?

A: For VOZWEI VGC or NT fuses, size In to the continuous load current, conductor ampacity and fuse characteristics, accounting for inrush. Pick a voltage that covers the system (VGC: AC400/500/690/1000V and DC440/800V; NT: AC800V), confirm breaking capacity exceeds the prospective fault current, and choose class by load type.

Q: Should I use VOZWEI VGC or NT for DC440/800V solar?

A: Use a VOZWEI VGC fuse for DC440V or DC800V solar circuits, since VGC carries DC440/800V ratings with DC breaking capacity up to 50kA. The VOZWEI NT series is AC800V only and not for DC; pair VGC with the VRB14 or VRB22 holder (AC1000V).

Q: What do gG/gL, aM and aR mean on VOZWEI fuses?

A: Fuse classes define protection targets. The gG/gL class covers general line protection, aM covers motor circuits and aR covers semiconductor circuits. Both VOZWEI VGC (2A–125A) and NT (2A–1600A) use these three classes.

Q: Which applications suit VOZWEI VGC and NT fuses?

A: The VOZWEI VGC compact fuse suits equipment and loop protection in solar and modern energy systems at 2A–125A with AC400/500/690/1000V and DC440/800V options. The VOZWEI NT industrial fuse targets heavy-duty circuits at 2A–1600A and AC800V. Both comply with IEC 60269.

Q: When should I use VOZWEI NT fuse over VOZWEI MCCB?

A: Use a VOZWEI VGC or NT fuse where very high breaking capacity is needed in a compact body and one-time protection is acceptable; use a VOZWEI MCB or MCCB where the circuit must be reset and reused. VOZWEI fuses reach up to 120kA breaking capacity.