4 in 1 out DC 1000V Combiner Box
Why Quality Matters?
Grouped by product family for cleaner RFQ selection: one page shows the available variant SKUs and key specification choices without creating duplicate product pages.
Variant SKU:
RFQ inputs
Quantity, destination, certificate needs.
QC proof
Inspection and document review before shipping.
Export ready
Packaging and mixed-container planning.
Procurement Snapshot
Commercial details are confirmed by SKU, quantity and destination at RFQ stage.
RFQ checklist
Send these points with your inquiry for faster pricing.
Documents to confirm
Often sourced together
Technical Data
Specification values for buyer review and RFQ matching
| Product Family ID | OS-ETK-EKDBS-PV4-1-BFS-1000 |
|---|---|
| Variant SKU Count | 1 |
| Supplier | ETK |
| Supplier Model | EKDBS-PV4-1-BFS-1000 |
| Product Type | PV Combiner Box |
| Available Voltage Ratings | 1000VDC |
| Rated Voltage | 1000VDC |
| Rated Current | 15A |
| Protection Degree | IP65 |
| DC Fuse | 1000VDC, 10×38mm, 15A; qty 8 |
| DC SPD | 1000VDC, 2P, 40kA, Type 2; qty 1 |
| Dimensions | 380x230x121.5mm (18 ways) |
| Enclosure | 18 Ways, IP65, PC material |
| Input Strings | 4 |
| Main Switch | 1000VDC, 63A 4P DC MCB; qty 1 |
| Operating Temperature | -25°C to +55°C |
| Output Strings | 1 |
| Poles | 4P |
| Protection Degree | IP65 |
| Rated Current | 15A |
| Rated Voltage | 1000VDC |
| System Voltage | 1000VDC |
Procurement & BOM Notes
How 4 in 1 out DC 1000V Combiner Box is sourced
OmniSol sources 4 in 1 out DC 1000V Combiner Box factory-direct as part of the PV Combiner Box family, quoted against your project quantity, destination port and product family id (OS-ETK-EKDBS-PV4-1-BFS-1000). Pricing and lead time are confirmed by SKU and order size at the RFQ stage, and OmniSol can propose a current-equivalent option if the exact variant is unavailable, so the line stays on schedule.
BOM fit
4 in 1 out DC 1000V Combiner Box sits between the array and the inverter, so it is specified with the string count, system voltage and protection layout of the project. It ships consolidated with cable, connectors and the rest of the electrical BOS, under one QC report and one document set.
Certification check
Confirm the device standard, breaking capacity and any market-specific listing (IEC or UL) before ordering. OmniSol supplies the datasheet, component brand list and inspection photos.
Product Overview
Four-string 1000V combiner for small commercial and residential ground-mount systems where four strings share a conduit and feed one inverter MPPT input. At 4 × 12A Isc, the 48A combined output remains within the cable and protection limits of typical home run designs.
4-string combiners are one of the most common configurations for residential and small commercial ground-mount systems where cost efficiency, array layout, and inverter MPPT count align around 4 strings per combiner.
Four-string 1000V combiners are the standard unit in 20–50kW commercial string inverter installations where each MPPT input aggregates four strings. Verify MPPT input current rating on the inverter data sheet against the aggregate of four string Isc values at site-specific peak irradiance conditions.
Applications
PV string combining
DC array protection
C&I rooftop solar
Utility-scale field combiner circuits
Frequently Asked Questions
Can a 4-string combiner be used with a multi-MPPT inverter?
Yes — but if each MPPT input must be fed separately, use a 4-string combiner with 4 outputs instead of 4-in/1-out. For systems where 4 strings share one MPPT input, the standard 4-in/1-out combiner is correct.
What is the output cable cross-section for 48A combined current?
A 6mm² or 10mm² DC cable in conduit typically handles 48A depending on installation method and ambient temperature. Confirm the cable cross-section with the electrical designer against the derating factors for the specific installation.
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