1 In 1 Out PV String Box
The WDB9FS2-1000 dc combiner box is an electrical protection device specifically designed for solar systems. It features a high-strength PC/ABS composite material housing (RAL 7035 colour) and meets IP65 protection standards. The product integrates a 25A/1000VDC fuse and a 10A/1000VDC circuit breaker, using the fuse to quickly disconnect overcurrent and, in conjunction with a 40kA surge protector, defend against lightning strikes, effectively ensuring the safety of photovoltaic strings. Compliant with IEC 62208 and CE standards, it is suitable for overcurrent, short-circuit, and transient voltage protection requirements in distributed power plants.
| Description | No.of input | No.of output | MPPT | Max. voltage | Max. current |
| One in one out 16A 1000V DC Pre-wired PV string box | 1 | 1 | 1 | 1000V DC | 16A |
| Switch disconnector | ODD-16D4 | Fuse disconnector | KCF2-25 / PVCF10 | |
| No.of pole | 4 | Rated voltage of fuse (Ue) | 1000V DC | |
| Rated insulation voltage (Ui) | 1000V DC | Rated current of fuse (Ie) | 10A | |
| Rated current (Ie) | 16A | Fuse size | 10×38mm | |
| Rated impulse withstand voltage (Uimp) | 8kV | Rated breaking capacity | 25kA | |
| Category | DC21B | Class of operation | gPV | |
| Standard compliance | IEC 60947-3 | Standard compliance | IEC 60947, IEC 60269 | |
| Certificate | TUV , SAA | Certificate | TUV | |
| Surge arrester | BY7-40/3 -1000 | Enclosure | WDB9 | |
| Classification | Type 2 | No.of module | 9 | |
| Maximum operation voltage (Ucpv) | 1000V DC | Material | PC / ABS | |
| Maximum discharge current (80/20µs) (Imax) | 40kA | Protection degree(IEC60529) | IP65 | |
| Norminal discharge current (80/20µs) (In) | 20kA | Impact resistance (IEC62262) | IK08 | |
| Short-circuit current rating (Iscpv) | 500A | Color | RAL7035 | |
| Voltage protection level (Up) | 4.5kV | Dimension(mm) | 233×213×112 | |
| Standard compliance | UI1449, IEC50539 | Standard compliance | IEC 62208 | |
| Certificate | UL , TUV | Certificate | CE |
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