SecSun UBM1101 PV Combiner Box AC/DC 3kW 1 String
SecSun UBM1101 AC/DC combiner box, single-phase 3 kW, 1 string. Integrated DC/AC protections (fuse-isolators, surge arresters, RCBO), IP65. 432 × 340 × 161 mm, EN 61439.
The SecSun UBM1101 is a single-phase AC/DC combiner box for photovoltaic systems up to 3 kW with 1 string. It integrates DC-side and AC-side protections – fuse-isolators, surge arresters and a residual-current breaker – to connect PV modules and the inverter to the grid safely and tidily, in an IP65 enclosure for indoor and outdoor use.
UBM1101 technical specifications
| Type | Single-phase AC/DC combiner box |
| Power | 3 kW single-phase |
| Strings | 1 |
| Protections | DC/AC fuse-isolators, surge arresters, RCBO |
| Protection rating | IP65 (indoor/outdoor) |
| Dimensions | 432 × 340 × 161 mm |
| Standard | CEI EN 61439-1/2 |
FAQ
Does it protect both the DC and AC sides?
Yes. The UBM1101 integrates protections on both the DC side (string fuse-isolators, surge arresters) and the AC side (RCBO), for a safe, compliant connection.
Can it be installed outdoors?
Yes. The IP65 rating allows both indoor and outdoor installation, protected from dust and water jets. Installation must be carried out by qualified personnel.
Is it single-phase or three-phase?
It is a single-phase 3 kW panel. For three-phase systems there are the UBT models of the same range.
