DC string combiner boxes
Combine the PV strings, protect each string and disconnect the DC side. Up to 1500 V DC.
Details: DC string combiner boxesLow-voltage switchgear and control panels, built and tested to EN/IEC 61439.
Small series and one-off panels for solar, battery storage and industrial projects. Assembled and tested in Bulgaria. Delivered to Germany, Italy and Bulgaria.
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Products
What we build
AC distribution and cable distribution cabinets (KVS)
Low-voltage distribution between inverters, grid and loads, with a section ready for your meter.
Details: AC distribution and cable distribution cabinets (KVS)Battery storage (BESS) and BESS panels with EMS controller
Battery systems in sizes that mass manufacturers do not offer, and BESS panels that let you add batteries later.
Details: Battery storage (BESS) and BESS panels with EMS controllerEV chargers and charging distribution boards
AC chargers 11/22 kW and DC chargers 30–150 kW of our own design, for fleets, car parks and commercial sites.
Details: EV chargers and charging distribution boardsPre-assembled DC cable harnesses
Solar cables cut, crimped, tested and labelled in our production, ready to plug in on site.
Details: Pre-assembled DC cable harnessesBy application
PV plants
DC cable harnesses, string combiner boxes up to 1500 V DC, AC combiner boxes and cable distribution cabinets for ground-mounted plants.
DC string combiner boxesC&I rooftops
Combiner boxes with fire brigade switch and distribution boards for commercial and industrial roofs.
Distribution cabinetsBattery storage
Battery systems in sizes that mass manufacturers do not offer. BESS panels that let you add batteries later.
Battery storageIndustrial
Low-voltage distribution and control panels for industrial buildings, built to your specification.
All productsHow we work
- You send a spec or a single-line diagram.
- We quote with a bill of materials.
- We build.
- We test every panel and give you the test report and declaration of conformity.
- Every panel has a serial number you can trace.
On every panel
- Built to EN/IEC 61439
- Routine tests on every panel
- Serial number on every panel: SPS-YY-order-item
- Components from Schrack Technik, ABB, Siemens and Eaton
References
Latest reference
Cable distribution cabinet (KVS) for PV plant Neumünster BA1, Germany, 2026.
See the referenceSend us your specification
A specification or a single-line diagram is enough to start. You can attach files to the form.
Send us your specification