Specially designed for safe use in solar systems, Sigma 800V AC NH Blade Fuses belong to the fusible wire fuse group and ensure protection against overload currents and short circuits through the thermal melting and multi-point severance of the internal wire. Quartz sand fills the gaps between the severed parts, completely cutting off electrical conduction to provide the necessary protection.

Enhanced safety is achieved with the steatite body material, which is extremely resistant to short circuits, pressure, and high temperatures. Thanks to the dual-indicator design, the deactivation of the NH fuse can be easily observed.