Solar PV Isolator Switch | 1500V DC, IP66, Arc-Free

Arcing is the nemesis of DC switches. Our solar PV isolator switch integrates a patented arc extinguishing grid and special contact geometry that rapidly quenches arcs, ensuring zero contact erosion and prolonged service life. Verified by independent labs, our switch withstands short circuit currents up to 10kA without damage. This technology is vital for systems with high string currents, common in utility solar plants. In a recent test, we performed 500 operations at 1,500V DC with no contact welding. With the global push towards higher voltage installations, our switch stands as a foundational element for safe and efficient solar systems. The arc-suppression mechanism also reduces electromagnetic interference, protecting sensitive control electronics. Each switch undergoes rigorous type testing to ensure continuous performance, giving engineers confidence in their system design.

Installed in open fields, rooftops, or coastal areas, solar equipment must withstand harsh climates. Our isolator switch’s enclosure is crafted from UV-stabilized thermoplastic and finished with a fluorine coating that defies yellowing and brittleness. The enclosure is designed to IP66, meaning total protection against dust ingress and powerful water jets, eliminating any moisture ingress. As a result, the switch maintains reliable insulation resistance above 1000MΩ even after 1,000 hours in a salt-spray chamber. It has proven resilience in monsoon seasons in Southeast Asia and sandstorms in the Middle East, maintaining low failure rates of less than 0.01%. For marine environments, we also offer a special anti-corrosion treatment. The clear polycarbonate lid provides visual inspection without opening, reducing risk.