--- title: "Sungrow SG3.0RS-S Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Sungrow SG3.0RS-S 3 kW grid-tie inverter. Specs: 97.3% European efficiency, 1 MPPT, 600 V max DC input, 6.0 kg." source: "https://comparepv.com/inverter/sungrow-sg3-0rs-s" updated: 2026-01-16 --- # Sungrow SG3.0RS-S ## Identity - **Manufacturer:** Sungrow - **Model:** SG3.0RS-S - **Series:** SG2.0/2.5/3.0RS-S - **Rated AC power:** 3 kW - **Type:** Grid-tie - **Phases:** Single-phase ## How it compares Compared against 164 inverters up to 3 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 97.3% | 97.0% | Strong - top 19% | 18 | | MPPT trackers | 1 | 1 | Typical | 43 | | Max DC input voltage | 600 V | 550 V | Strong - top 19% | 13 | | Weight per kW | 2.0 | 4.0 | Strong - top 3% | 5 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 3 kW - **Max apparent power:** 3.00 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 13.7 A - **Power factor:** >0.99 at rated / adjustable 0.8 leading – 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 4.50 kW - **Max DC voltage:** 600 V - **MPPT voltage range:** 40 to 560 V - **Start-up voltage:** 50 V - **MPPT trackers:** 1 - **Max input current per MPPT:** 16.0 A - **Max short-circuit current per MPPT:** 20.0 A ### Efficiency - **European efficiency:** 97.3 % - **Max efficiency:** 97.8 % ### Physical - **Dimensions:** 225 × 320 × 120 mm - **Weight:** 6.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet, Display - **Protocols:** Ethernet, WLAN (Wi‑Fi), RS485, DI (Ripple control & DRM) - **Protection:** AFCI, DC switch, Surge protection ### Warranty and certificates - **Certifications:** IEC/EN 62109-1/2, IEC/EN 62116, IEC/EN 61727, IEC/EN 61000-6-2/3, EN 50549-1, AS 4777.2, UNE 217002:2020, NTS V2 TypeA, CEI 0-21:2020, VDE 0126-1-1/A1 (VFR-2019), UTE C15-712, C10/11, G98/G99 ### Pros - **Fanless cooling at just 6 kg** - Natural convection eliminates moving parts prone to wear - the inverter weighs approximately 6 kg (SG2.0RS-S per datasheet V13), making single-person installation straightforward. The absence of a fan reduces acoustic emissions to 0 dB and statistically lowers the incidence of mechanical failures compared to actively cooled units. - **AFCI + Type II DC and AC SPD as standard** - An integrated arc-fault circuit interrupter (AFCI) and Type II surge protective devices (SPDs) on both the DC and AC sides are factory-fitted - features that some competitors in this power class (e.g., older Fronius Primo lines) offered only as paid options or not at all. This reduces fire risk and improves compliance with IEC 62109-2. - **Built-in PID recovery** - The intelligent PID (Potential Induced Degradation) recovery module operates automatically without any additional external device. It restores degradation losses in both monofacial and bifacial modules, which is particularly valuable in longer strings operating at a high system voltage of 600 V DC. - **IP65 with C5 corrosion resistance** - The IP65-rated enclosure carries a C5 corrosion-resistance certification (per ISO 12944), allowing installation in aggressive environments - coastal zones and industrial sites - without supplementary protective enclosures. This places it on par with top-tier SMA and Fronius models in the same power class. - **iSolarCloud with online I-V curve diagnostics** - The iSolarCloud platform delivers 24/7 monitoring, quasi-real-time data, and I-V curve scanning and diagnostics at no additional subscription cost. Standard connectivity via Wi-Fi, Ethernet, and RS485 enables seamless integration with home automation systems and installer-grade SCADA platforms. ### Cons - **Single MPPT tracker only** - A single MPPT prevents independent management of two roof sections with different orientations or tilt angles without the addition of power optimizers. Direct competitors - the SMA Sunny Boy 3.0 (SB3.0-1AV-41) and Fronius Primo GEN24 3.0 - both offer two independent MPPTs in the same power class, providing greater design flexibility on complex roof geometries. ## About this series The Sungrow SG2.0/2.5/3.0RS-S series are **single-phase grid-tie string inverters**, designed for residential installations where stable operation, quick installation, and convenient production management are key priorities. The construction is lightweight and compact, and the fanless cooling promotes quiet operation and reduced downtime. A noteworthy feature is the **integrated PID intelligent regeneration function**, which helps maintain module yields at a high level over the long term. This series features **one MPPT tracker** - an optimal solution for simple systems with uniform exposure, ensuring effective power point tracking and reliable energy production under typical residential conditions. The high European efficiency translates to lower losses in real-world irradiance profiles, meaning more energy delivered to the installation. Monitoring is done via iSolarCloud - with 24/7 viewing, nearly real-time data, and I-V curve diagnostics, while communication can include **WLAN (WiFi), Ethernet, and RS485**. Safety is enhanced by **AFCI and Type II SPDs on both the DC and AC sides**, and the IP65-rated enclosure and C5 corrosion resistance support outdoor operation. This is the series for savvy consumers and small businesses that do not require hybrid features or integrated energy storage within the inverter. ## Questions ### What warranty does the manufacturer provide for the Sungrow SG2.0/2.5/3.0RS-S series inverters? Sungrow provides a 10-year factory warranty on the SG2.0/2.5/3.0RS-S series inverters. This is the standard warranty period for Sungrow residential inverters up to 20 kW. To maintain warranty coverage, installation must be carried out by a qualified electrician, and any unauthorized modifications to the unit will void the warranty. Sungrow is a Tier 1 manufacturer, which further underscores the credibility of its warranty commitments. ### Can the Sungrow SG3.0RS-S inverter be installed outdoors? Yes, the IP65 enclosure rating and C5 corrosion resistance class allow outdoor installation, for example on a building facade or under a canopy. The unit operates across a temperature range of -25°C to +60°C, making it well suited to the Polish climate. Fanless natural convection cooling eliminates moving parts, reducing the risk of failure when exposed to rain and dust. ### Does the SG2.0/2.5/3.0RS-S series support battery storage or off-grid operation? No, the SG2.0/2.5/3.0RS-S series consists of grid-tie inverters without hybrid functionality. They do not support battery connection or off-grid (island-mode) operation during a grid outage. If you are planning a battery storage system or require backup power capability, you should consider Sungrow hybrid inverters from the SH series or similar devices designed for use with battery storage. ### What does the built-in PID recovery function in the Sungrow SG3.0RS-S inverter do, and does it actually work? The intelligent PID (Potential Induced Degradation) recovery function actively counteracts module degradation caused by leakage currents. It allows PV modules to recover a portion of their lost power output, resulting in higher energy yields throughout the entire system lifetime. The function is factory-integrated and requires no additional hardware or user configuration. ### How does system monitoring work with the Sungrow SG2.0/2.5/3.0RS-S inverter? Monitoring is provided through the iSolarCloud platform, available as a mobile app and a web dashboard. Production data is displayed in near real time, 24 hours a day. The inverter connects to the local network via Wi-Fi, Ethernet, or RS485, offering flexibility across various home network configurations. I-V curve diagnostics are also available, which are particularly useful for identifying module-level issues. ### What size residential PV system is the Sungrow SG2.0RS-S or SG3.0RS-S inverter suitable for? The SG2.0/2.5/3.0RS-S series is designed for small prosumer installations ranging from approximately 2 to 4 kWp, typical of single-family homes with low to moderate energy consumption. The single MPPT tracker performs best when all modules share uniform irradiance and orientation with minimal shading. For more complex roof configurations, an inverter with two or more MPPT trackers should be considered. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/ds-20230714-sg2-0-2-5-3-0rs-s-datasheet-v12-en-gl-8d54f39f4abe.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SolarEdge SE3000H (HD‑Wave, single phase)](https://comparepv.com/inverter/solaredge-solaredge-se3000h-hd-wave-single-phase) | 3 kW | 98.3% | | 7.8 kg | +1.0 pp efficiency, 1.8 kg heavier | | [Solis-3P3K-4G](https://comparepv.com/inverter/ginlong-solis-solis-3p3k-4g) | 3 kW | 97.8% | 2 | 17.3 kg | +0.5 pp efficiency, +1 MPPT, 11.3 kg heavier | | [Ginlong Solis S6-GR3P-3K02-NV-ND](https://comparepv.com/inverter/ginlong-solis-s6-gr3p-3k02-nv-nd) | 3 kW | 97.7% | 2 | 14.7 kg | +0.4 pp efficiency, +1 MPPT, 8.7 kg heavier | | [Growatt MOD 3000TL3-X](https://comparepv.com/inverter/growatt-mod-3000tl3-x) | 3 kW | 97.5% | 2 | 12.5 kg | +1 MPPT, 6.5 kg heavier | | [Growatt MOD 3000TL3-X2 (Pro)](https://comparepv.com/inverter/growatt-mod-3000tl3-x2-pro) | 3 kW | 97.5% | 2 | 14.6 kg | +1 MPPT, 8.6 kg heavier | | [SOFAR 3.3KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-3-3ktlx-g3) | 3 kW | 97.5% | 2 | 17.0 kg | +1 MPPT, 11.0 kg heavier | | [GoodWe GW3000-SS](https://comparepv.com/inverter/goodwe-gw3000-ss) | 3 kW | 97.4% | 1 | 12.0 kg | 6.0 kg heavier | | [Growatt 3000-S](https://comparepv.com/inverter/growatt-growatt-3000-s) | 3 kW | 97.3% | 1 | 9.1 kg | 3.1 kg heavier | --- Source: https://comparepv.com/inverter/sungrow-sg3-0rs-s