Cylindrical fuse insert CH-10 10x38mm gPV 10A 1000V DC LF310PV

Protection of Photovoltaic Installations Against Short Circuits and Overloads

The gPV-type fuse link is designed exclusively for use in photovoltaic systems. Its function is to quickly and reliably interrupt the circuit in the event of a short circuit or sustained overload, thereby preventing conductor overheating and damage to PV modules. This is not an ordinary fuse; it meets the specific requirements of the PV market, where fault currents can be high and response time is critical.

For the Installer – Precision and Compliance with Standards

Compliant with IEC 60269-6, the gPV category indicates that the fuse link operates across the entire current range – from minor overloads to maximum short circuits. The rated current of 10 A and voltage of 1000 V DC correspond to standard parameters of strings in residential and medium-sized installations. Power loss at rated current is 2.58 W, indicating low thermal losses during normal operation and, consequently, reduced stress on the fuse base. The ceramic fuse link with a single-sided blow indicator (stirnkennmelder) allows for quick identification of a blown element without the need to dismantle the entire assembly.

For the End User – Long-Term Safety

In PV systems, where currents are direct and there is no natural zero-crossing as in AC networks, any fault can lead to permanent damage. This fuse link provides protection up to 30 kA, meaning it can safely interrupt even very large short circuits ("short-circuit") in panels or DC cables. This is crucial in the event of inverter failure or insulation damage in cables. It requires no maintenance, has no moving parts, and operates solely based on the physical properties of the ceramic material and conductor. Installation in the Hager LF310PV modular base is simple and requires no special tools.