DC Solar Isolator: 1500V, 25kA & IP65 Rated

ZHNYU ELECTRIC has manufactured low-voltage electrical components since 1992, and that 34-year heritage is embedded in every dc solar isolator we ship. Our integrated R&D, production and sales structure means contact metallurgy, arc chamber geometry and housing molding are developed in-house rather than outsourced, giving buyers a single accountable partner. Across 10,000+ square meters of office and workshop space and 100+ production equipment units, we run dedicated dc solar isolator cells with in-line dielectric, contact resistance and temperature rise testing. Traceability codes link each unit to material batches and test records, supporting ISO9001, CCC and CE audits and RoHS compliance reviews.

Because direct current arcs do not self-extinguish, our dc solar isolator validation program exceeds routine factory checks. Prototypes face 1,500V DC breaking tests, 25kA short-circuit withstand verification and 10,000-cycle mechanical endurance runs before approval. Production units then undergo dielectric withstand, contact resistance measurement, temperature rise checks and functional switching verification on dedicated test benches. Silver-alloy contacts, splitter plates and magnetic blowout geometry keep temperature rise under 55K at full load and support continuous operation from -25 to 70 degrees Celsius. These results translate into field reliability: a Middle East railway operator using our 600V dc solar isolator in a 300 kW solar-plus-storage microgrid recorded zero isolation failures over 18 months.