20 in 1 out DC 1500V Combiner Box
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Technical Data
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| Product Family ID | OS-ETK-EKDBT-PV20-1-BFS-1500 |
|---|---|
| Variant SKU Count | 1 |
| Supplier | ETK |
| Supplier Model | EKDBT-PV20-1-BFS-1500 |
| Product Type | PV Combiner Box |
| Available Voltage Ratings | 1500VDC |
| Rated Voltage | 1500VDC |
| Rated Current | 15A |
| Protection Degree | IP65 |
| DC Fuse | 1500VDC, 10×85mm, 15A; qty 40 |
| DC SPD | 1500VDC, 3P, 40kA, Type 2; qty 1 |
| Dimensions | 860x560x200mm |
| Enclosure | IP65, Metal (customizable shell materials) |
| Input Strings | 20 |
| Main Switch | 1500VDC, 400A 2P DC MCCB; qty 1 |
| Operating Temperature | -25°C to +55°C |
| Output Strings | 1 |
| Poles | 2P (optional: 3P) |
| Protection Degree | IP65 |
| Rated Current | 15A |
| Rated Voltage | 1500VDC |
| System Voltage | 1500VDC |
Product Overview
1500V rated 20-string combiner for utility-scale 1500V DC PV projects. At 1500V system voltage, each string delivers more power at the same current — the 20-string combiner output current for the same inverter power is lower than in a 1000V system, allowing smaller output cable cross-section.
All internal components — gPV fuse links, SPD, isolator, and busbar — are rated for 1500V DC. Replacement fuse links must also be 1500V gPV rated (EKFL15D10L or equivalent) for safe commissioning and maintenance.
The 1500V 20-string version is a standard centralised combiner for utility-scale array blocks. Verify shipping dimensions before ordering — large combiner box enclosures typically require pallet freight rather than standard carton packing, which should be included in landed cost calculations for overseas delivery.
Applications
PV string combining
DC array protection
C&I rooftop solar
Utility-scale field combiner circuits
Frequently Asked Questions
How does 1500V architecture reduce BOS cost in a 20-string combiner?
At 1500V, each string delivers 50% more voltage at the same current compared to 1000V. For the same inverter power, fewer strings are needed, reducing combiner count. Longer string voltages also reduce combiner-to-inverter home run cable losses.
Are 20-string 1500V combiners available with monitoring?
String monitoring options including current measurement per string and communication interfaces can be added to combiner configurations. Specify monitoring requirements at RFQ and we confirm available options.
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