DC Isolator Box IP65 Enclosure Four Strings

The DC Isolator Box IP65 Enclosure Four Strings, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 1500 V DC photovoltaic isolation unit constructed with a UV-resistant polycarbonate housing and IP65-rated sealing for long-lasting outdoor performance. The enclosure houses four cage-type rotary DC isolator switches that deliver visible-break isolation and maintenance safety, while factory-wired positive, negative and PE busbars ensure dependable grounding continuity. Engineered for quad-string PV sub-arrays, it provides essential manual isolation and equipotential bonding.

Technical Parameter

Application scenarios

1. Commercial flat-roof installations ≥ 30 kW where four-string sub-arrays need local, lockable isolation before the MPPT aggregator.  

2. Agricultural greenhouse systems that demand IP65 sealing against constant humidity, irrigation mist and 24-hour UV while providing a visible-break disconnect for every string.  

3. Medium-scale ground-mounted plants (30–40 kW blocks) that require on-site maintenance disconnection and equipotential bonding for four strings in a single, weather-proof box.  

4. Car-port or canopy PV structures where quad-string arrays feed central inverters and rapid-shutdown or O&M rules call for a handle-lockable isolator within arm’s reach.  

5. Retrofit or expansion projects on aging rooftops that add a fourth string; the box delivers code-compliant isolation for the new capacity without rewiring the existing DC combiner.