DC Isolator Box IP65 Enclosure Three Strings

The DC Isolator Box IP65 Enclosure Three Strings, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 1000 V DC photovoltaic isolation unit constructed with a UV-resistant polycarbonate housing and IP65-rated sealing for long-lasting outdoor performance. The enclosure houses three 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 triple-string PV sub-arrays, it provides essential manual isolation and equipotential bonding without integrating any over-current or surge-protection components.

Technical Parameter

Application scenarios

1.Large Residential & Small C&I Rooftops

Perfect for 15–25 kW homes or offices that run three PV strings to one inverter. The slim IP65 box bolts beside the inverter, putting three lockable isolators at arm’s reach so home-owners can break every string visually before cleaning panels or swapping the inverter.

2.Agricultural-Greenhouse PV (20–30 kW)

Built for humid, chemical-heavy greenhouse roofs. Three rotary isolators sit in a UV-stable IP65 shell, letting growers kill power to one bay for glass washing or crop work while the rest of the system keeps vent fans running.

3.Carport & Canopy Solar (≤ 30 kW)

Car-port arrays are usually split into three symmetrical strings. The palm-size isolator box straps to a column, giving installers a code-compliant, local isolation point within sight of both the modules and the inverter—no extra disconnects needed.

4.Medium-Scale Ground-Mount Blocks (30 kW blocks)

Designers group 90–100 modules into three strings per MPPT; one box per block provides string-level isolation, making fault-finding and inverter swaps faster without walking the whole row.

5.DC/DC Optimizer Circuits

When optimizers are used, each harness still needs a manual disconnect. The three-switch box parks between the optimizer trunk and the central inverter, meeting rapid-shutdown and isolation rules inside a single, lockable enclosure.