Secsun
Secsun QDC3-1000 DC combiner box 3 strings in parallel 1000 V
Secsun QDC3-1000 DC combiner box 3 strings in parallel 1000 V
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€402.26
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€402.26
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Delivery in 10-20 days3 strings DC1000 V DCBuilt-in SPDSecsun
Secsun QDC3-1000 DC combiner box 3 strings in parallel 1000 V
The QDC3-1000 is the DC combiner box that sits between the PV modules and the inverter: it collects 3 strings in parallel and delivers a protected, switchable line downstream, with a working voltage up to 1000 V DC.
Inside the enclosure you find overcurrent protection on the poles of every string, the surge arrester for atmospheric discharges and the on-load disconnector that lets you open the array before any work on the system. The board is delivered pre-wired and tested: on site you only connect the incoming string cables and the inverter on the output.
Key strengths
String protectionDedicated fuses or fuse holders on every pole of the incoming strings.
Surge arresterType 2 SPD to divert atmospheric overvoltages to earth.
On-load disconnectionDC switch-disconnector to open the array safely.
Pre-wired enclosureDelivered assembled and tested: only strings and inverter need connecting.
Outdoor enclosureInsulating enclosure with a protection rating suitable for outdoor mounting.
Standards compliantBuilt to CEI EN 61439 for low-voltage assemblies.
Technical specifications
| Feature | Value |
|---|---|
| Product code | QDC3-1000 |
| Manufacturer | Secsun |
| Type | DC array combiner box |
| Strings supported | 3 strings |
| String connection | in parallel |
| DC circuit voltage | 1000 V CC |
| Integrated surge protection | Yes, DC surge arrester |
| Actuation | DC on-load disconnector |
| Dimensions (W x D x H) | 350 x 300 x 160 mm |
| Mounting | Wall mounted, outdoor |
| Certifications | CEI EN 61439 |