Solis S5-GR3P8K 8kW Three-Phase 2-MPPT Grid-Tied Inverter
The Solis S5-GR3P8K (part number SOL-S5-GR3P-8K-DC) is an 8 kW three-phase, 2-MPPT grid-tied string inverter from the Solis S5 GR3P series. Part of the S5-GR3P(3-20)K range, it features 2 MPPT trackers with 2 string inputs at 16 A per string, a maximum PV DC input of 12 kW (150% DC/AC ratio), and a maximum efficiency of 98.5% (97.9% EU efficiency). With a maximum output of 8.8 kW, integrated AFCI arc-fault protection, IP66 ingress protection, and SolisCloud remote monitoring capability, the S5-GR3P8K is a compact and lightweight three-phase inverter for residential PV systems. G98/G99 certified. Available from DECO Group, a UK-based solar trade wholesaler.
Key Technical Details
- Part number: SOL-S5-GR3P-8K-DC
- Supplier part number: S5-GR3P8K
- Inverter type: Three-phase grid-tied string inverter
- Rated AC output power: 8 kW
- Maximum AC output power: 8.8 kW
- Surge AC power (1 second): 8.8 kW
- Maximum efficiency: 98.5%
- EU efficiency: 97.9%
- Transformer: None (transformerless)
- Maximum PV DC input power: 12 kW
- DC/AC ratio: 150%
- Maximum DC input voltage: 1,100 V
- MPPT voltage range: 180 V to 1,000 V
- DC startup voltage: 180 V
- DC shutdown voltage: 160 V
- Maximum DC input current: 32 A total (16 A per string)
- MPPT quantity: 2
- Maximum DC inputs: 2 (1 per MPPT)
- Connector: MC4 (4 included)
- Integrated DC switch: Yes
- AFCI: Yes (integrated DC arc-fault circuit protection)
- Surge protection: Type II (DC and AC)
- DC reverse polarity protection: Yes
- Communication: RS485; optional WiFi, GPRS
- Ingress protection: IP66
- Weight: 17.8 kg
Key Features
- 8 kW rated output with 8.8 kW maximum and 12 kW DC input for 150% DC/AC oversizing
- 2 MPPT trackers with 2 string inputs for split-array flexibility
- 98.5% maximum efficiency and 97.9% EU efficiency
- Integrated AFCI protection for proactive DC arc-fault fire risk reduction
- IP66 rated for dependable outdoor installation
- Compact and lightweight at 17.8 kg
- Export power control support with compatible accessories
- SolisCloud ready for remote monitoring
System Compatibility
- Part of the Solis S5-GR3P(3-20)K series
- MC4 DC connectors; AC quick connection plug
- This inverter does not include a data logger, CT, meter, or export power manager
- For export power control of a single inverter: use the SOL-METER-3PH-CT3 (requires a data logging stick)
- For export power control of multiple inverters: use the EPM3-5G-PLUS (has built-in data logger)
- Extended warranty available: SOL-WAR-10Y-S5-GR3PK (5 additional years) or SOL-WAR-20Y-S5-GR3PK (15 additional years)
Certifications and Compliance
- G98 / G99
- G100
- EN 50549
- NRS 097-2-1
- CE certified
Installation Notes
- At 17.8 kg, single-person installation is feasible
- IP66 rated for indoor or outdoor installation
- Must be installed by a qualified electrician or technician
Warranty
- Standard warranty: 5 years (10 years standard in the Netherlands, Belgium, France, Germany, Poland, and Italy)
- Extended warranty: extendable to 10 years (SOL-WAR-10Y-S5-GR3PK) or 20 years (SOL-WAR-20Y-S5-GR3PK)
Common Questions
Click a question below to reveal the answer.
Where does the 8kW sit in the Solis GR3P range?
The 8 kW sits between the 6 kW and 10 kW models, all sharing the 2 MPPT / 2 string architecture with natural convection cooling. The 12/15/20 kW models step up to 4 string inputs and fan cooling. All models in the range use the same warranty extension parts.
Does the Solis S5-GR3P8K include monitoring equipment?
No. Data logger, CT, meter, and export power manager are sold separately.
Can I extend the warranty?
Yes. The standard 5-year warranty (10 years in selected EU countries) can be extended to 10 or 20 years.
About Solis
Ginlong Solis, established in 2005, is an internationally recognised manufacturer of solar inverters for residential, commercial, and utility-scale applications.
DECO Group supplies Solis grid-tied inverters across the full S5-GR3P range from 3 kW to 20 kW. Visit decogroup.co.uk for the full catalogue.
About DECO Group
We supply Solis inverters and system accessories to professional solar installers and electrical contractors across the UK. Visit decogroup.co.uk for the full catalogue.
