DELTA Inverters for PV Systems
In 1999, DELTA started their Solar Inverter Program, beginning with the development of a 260W grid-tie inverter in Germany.
Since that time their offering has expanded to a full range of solar solutions for residential, commercial and large scale photovoltaic applications. Their PV inverters ranging from 2.5kVA up to 140kVA deliver reliable, high-performance power conversion that combined with their cloud-based monitoring and integration possibilities with energy storage help the customers to reduce their CO2 footprint significantly.
Since 2017 the internationally active Swiss connector manufacturer Multi-Contact AG has been trading as Stäubli Electrical Connectors AG.

DELTA RPI M30A

High efficiency 3-phase solar inverters for the European market – Perfect choice for large-scale solar PV systems, such as those used in the commercial or agricultural sectors.
- Peak efficiency of 98.5 %
- 2 MPP trackers for increased
flexibility and maximum yield - Symmetrical and asymmetrical
loading possible (33/67 %) - Nominal apparent power 30 kVA
(33 kVA max. apparent power
possible)

DELTA RPI M50A

High efficiency 3-phase solar inverters that are the perfect choice for large-scale solar PV systems, such as those used in the commercial or agricultural sectors
- Peak efficiency of 98.6 %
- Built-in and replaceable AC and
DC-side Type II SPDs (surge protection
devices) and string fuses - 2 MPP trackers – symmetrical and
asymmetrical loading possible
(40/60% or 60/40%) - Nominal apparent power 50 kVA
(55 kVA max. apparent power
possible 7))

DELTA RPI M70A

High efficiency three phase solar inverters for the EMEA market – Perfect choice for large-scale solar PV systems, such as those used in the commercial or utility sectors.
Maximum profitability
- Peak efficiency of 98.8%
- 6 MPP Trackers
- Individual string monitoring
- Maximum apparent power 77 kVA
- Wide input voltage range 200 … 1000 V
- Max. input voltage 1100 V
Additional functions
- ● I-V Curve Function for PV system analysis
- Q at Night
- Anti-PID