1000V DC Combiner Box 2 In 1 Out Isolator type

The 1000V DC Combiner Box 2 In 1 Out Isolator type, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 1000 V DC photovoltaic aggregation unit built for harsh-rooftop and field conditions. The UV-stabilised polycarbonate enclosure carries IP65 sealing to block dust and driving rain, while a single, front-operated cage-type rotary DC isolator delivers visible-break isolation for lock-out/tag-out safety. Internally, two PV strings are individually fused through four DC fuse holders (two per string), and a Class II DC surge protective device (SPD) clamps induced lightning transients. Factory-wired positive, negative and PE busbars maintain dependable grounding continuity, making the box an essential manual-isolation and equipotential-bonding hub for small sub-arrays up to 2 × 15 A input.

Technical Parameter

Wiring Diagram

Application scenarios

1.PV string consolidation – Small rooftop arrays

Fixed beneath modules or on parapet walls, the box merges two PV strings into a single 1000 V DC feed. Four fuse holders (two per string) give individual string over-current protection, while the Class II SPD clamps induced surges from nearby lightning. A front-operated cage-type rotary isolator provides visible-break lock-off, allowing safe inverter maintenance without roof-top exposure.

2.Agricultural DC feeders – Irrigation and livestock systems

Wall-mounted in pump houses or barn lofts, the unit supplies solar-generated DC to brush-less pumps and milking equipment. IP65 sealing excludes grain dust and high-pressure wash-down water, and the isolator lets farmers break both poles instantly before seasonal equipment checks or belt replacement.

3.Remote telecom shelters – Critical communication power

Positioned inside tower compounds, the combiner feeds DC busbars that power radio heads and battery banks. The SPD safeguards sensitive RF electronics against transient over-voltages, while the isolator acts as a local disconnect for technicians performing tower earthing measurements or rectifier swaps.

4.Residential cluster arrays – Apartment block PV branches

Installed within meter cupboards or attic trusses, the enclosure consolidates two module strings for a shared inverter. Fire-retardant polycarbonate and string-level fusing enhance safety in populated buildings, and the isolator gives emergency responders a single labelled point to isolate the DC side during a fire event.

5.Industrial micro-grid nodes – Backup and peak-shaving circuits

Flange-mounted on skids that couple PV with forklift chargers or PLC racks, the box handles 15 kW of solar input. The dual-string capability matches peak-shaving demand profiles, and the coordinated SPD + double-pole isolator shield sensitive drives from both grid spikes and inverter commutation noise.