DC string combiner boxes
Combine the PV strings, protect each string and disconnect the DC side. Up to 1500 V DC.
A string combiner box collects the strings of a PV plant before the inverter. Each string has its own fuse. Surge protection and a DC disconnect switch protect the plant and the people who work on it.
We build boxes for ground-mounted PV plants and for commercial and industrial roofs. On roofs, a fire brigade switch can disconnect the DC side in an emergency.
Every box is built for your project: number of strings, fuse rating, protection devices and monitoring.
For whom
- PV plants
- EPC companies
- Installers
Technical frame
| System voltage | up to 1500 V DC |
|---|---|
| Strings per box | 2 to 24 |
| Protection per string | fuse |
| Surge protection | yes |
| DC disconnect switch | yes |
| Protection rating | IP65 |
| Mounting | wall mounting |
Options
- Surge protection type 1 or type 2
- Fire brigade switch (Feuerwehrschalter)
- String monitoring (RS485 / Modbus)
- Insulation monitoring
- Arc fault detection
What you get with every panel
- Test report
- Declaration of conformity (CE)
- Wiring diagram
- Bill of materials
- Serial number on the box