DC Fuse Disconnector: 1500V Solar Protection & IP65 Rated

As the DC voltage used in photovoltaic systems continues to rise to reduce resistive losses, protecting equipment at higher voltages is a necessity. Our DC fuse disconnector is engineered to operate safely at up to 1500V DC, which is the standard for modern solar fields. The product’s internal arc-suppressing design ensures that even under load, disconnection is safe without drawing an arcing hazard. With a rated insulation voltage of 1600V, it provides ample safety margin, reducing the risk of dielectric breakdown. We have documented multiple cases where this high voltage handling prevented major damage. For instance, a 200MW PV plant in Chile experienced a string fault, but our disconnectors swiftly cleared the fault without any collateral damage to adjacent circuits. The high voltage rating also eliminates lower voltage series wiring, cutting cost by up to 10%.

Environmental resilience is key to DC system reliability, whether in scorching deserts or rain-soaked coastal installations. Our DC fuse disconnector comes with an IP65 enclosure, offering full protection against dust ingress and low-pressure water jets from any direction. Moreover, we use a UV-stabilized polycarbonate housing that prevents degradation even with prolonged exposure to intense sunlight. This design feature is supported by 2,000 hours of accelerated UV testing with zero cracking or yellowing. The enclosure also includes a dual-latch mechanism that allows operation while wearing thick gloves, making it ideal for off-shore wind and tidal applications. With IP65 rating, our disconnectors have been installed in over 200 projects in the Middle East, reducing cleaning frequency.