Specifically designed for safe use in solar systems, Sigma 800V AC NH Blade Fuses belong to the group of fuses with melting wires. In case of overload currents and short circuits, the wire inside melts due to heat, breaking at different points. Quartz sand fills the gaps between the broken pieces, completely cutting off electrical conduction and providing the necessary protection.

Enhanced safety is provided by the steatite body material, which is extremely resistant to short circuits, pressure, and high temperatures. The dual indicator structure makes it easy to observe when the NH fuse is deactivated.