Sungrow SG4.0RS
Official manufacturer GL (global datasheet; EU / MENA / LATAM / AU / SEA per product page) verified Sept. 3, 2026
Identity
| category | inverters |
| ean | UNKNOWN |
| generation | RS (1st generation, 2-MPPT chassis) |
| grid_type | TN / TT |
| hardware_revision | UNKNOWN |
| legacy_name | UNKNOWN |
| manufacturer | Sungrow |
| manufacturer_legal_entity | Sungrow Power Supply Co., Ltd. |
| market_version | GL (global) datasheet V12 |
| model | SG4.0RS |
| mpn | UNKNOWN |
| order_code | UNKNOWN |
| phase_configuration | single-phase (1 / N / PE) |
| product_family | SG2.0-6.0RS (RS single-phase residential string inverter) |
| product_status | active |
| product_status_detail | active - listed on the official 2026 sungrowpower.com string-inverter index as 'SG3.0/3.6/4.0RS (3~4kW)' |
| product_status_evidence | official product index fetched 2026-09-03 |
| region | GL (global datasheet; EU / MENA / LATAM / AU / SEA per product page) |
| release_year | UNKNOWN |
| sku | UNKNOWN |
| subcategory | grid-tied PV string inverter (single-phase, no battery interface) |
| topology | transformerless (no galvanic isolation) |
| variant_note | non-'-S' variant: 2 independent MPPTs in the 410*270*150 mm / 10 kg chassis. Do not confuse with SG3.0RS-S (1 MPPT, 320*225*120 mm, 6 kg). |
Electrical
| dc_ac_ratio | 1.5 |
| european_efficiency_pct | 97.2 |
| grid_frequency_range | 45 Hz - 55 Hz (50 Hz) / 55 Hz - 65 Hz (60 Hz) |
| max_ac_power_w | 4000 |
| max_apparent_power_va | 4000 |
| max_dc_short_circuit_current_total_a | 40 |
| max_dc_voltage_v | 600 |
| max_efficiency_pct | 97.9 |
| max_input_current_per_input_a | 20 |
| max_input_current_per_mppt_a | 20 |
| max_input_current_total_a | 40 |
| max_output_current_a | 18.2 |
| max_pv_input_power_w | UNKNOWN |
| max_short_circuit_current_per_mppt_a | 20 |
| min_operating_voltage_v | 40 |
| mppt_voltage_max_v | 560 |
| mppt_voltage_min_v | 40 |
| mppt_voltage_range_for_nominal_power | UNKNOWN |
| night_power_consumption | UNKNOWN |
| nominal_dc_voltage_v | 360 |
| nominal_frequency | 50 Hz / 60 Hz |
| nominal_voltage | 220 V / 230 V / 240 V (1 / N / PE) |
| num_mppt | 2 |
| num_pv_inputs | 2 |
| oversizing_guidance | recommended max PV input power 6.0 kWp vs 4000 W rated AC (1.5x); no explicit maximum ratio stated |
| power_factor_range | > 0.99 default; 0.8 leading - 0.8 lagging adjustable |
| rated_ac_power_w | 4000 |
| rated_output_current_a | 17.4 |
| recommended_pv_power_w | 6000 |
| startup_voltage_v | 50 |
| string_rules | 2 independent MPPTs, 1 PV string per MPPT (2 strings total). User manual Ver18: input-connector limit 20 A, open-circuit voltage limit 600 V. |
| thd | < 3 % at rated power |
| voltage_range | 154 V - 276 V |
Physical / mechanical
| cooling | natural convection (fanless) |
| depth_mm | 150 |
| dimensions_mm | 410 (W) * 270 (H) * 150 (D) |
| enclosure_material | UNKNOWN |
| height_mm | 270 |
| mounting_type | ['wall bracket'] |
| weight_kg | 10 |
| width_mm | 410 |
Installation
| ac_connector | plug-and-play connector (max. 6 mm2) |
| dc_connector | MC4 (max. 6 mm2) |
| indoor_outdoor | indoor and outdoor (IP65) |
| max_installation_altitude_m | 4000 |
| mounting_orientation | UNKNOWN |
Environment
| cooling | natural cooling |
| corrosion_class | C5 (per product page) |
| ip_rating | IP65 |
| max_altitude_m | 4000 |
| noise_db | UNKNOWN |
| operating_temperature | -25 C to 60 C |
| relative_humidity | 0 % - 100 % non-condensing |
Interfaces & connectors
| bluetooth | UNKNOWN |
| can | none documented |
| communication_label | Ethernet / WLAN / RS485 / DI (Ripple control & DRM) |
| display | LED |
| ethernet | yes (via WiNet-S dongle) |
| isolarcloud_dependency | iSolarCloud used for monitoring; no statement that local operation depends on it |
| local_communication | RS485 / DI (ripple control and DRM) |
| logger_support | not listed for SGxxRS in Compatibility List 4.3 (Logger1000/1000A rows cover SG150CX and SG33-125CX-P2) - NOT_LISTED, not incompatible |
| modbus_rtu | UNKNOWN |
| modbus_tcp | UNKNOWN |
| register_map_availability | UNKNOWN |
| rs485 | yes |
| wifi | yes (WLAN, via WiNet-S dongle) |
| winet_support | yes - Compatibility List 4.3 lists WiNet-S/S2 for SGxxRS, max. 1 device, 10 s refresh, WiFi or Ethernet |
Protection
| afci | yes - integrated arc fault circuit interrupter |
| anti_islanding | yes |
| dc_reverse_polarity | yes |
| dc_switch | yes |
| grid_protection | grid monitoring |
| insulation_monitoring | ground fault monitoring / PV string current monitoring yes |
| pid | built-in smart PID Zero function |
| rcmu | leakage current protection yes |
| spd | DC Type II / AC Type II (built-in) |
Certifications
| grid_codes | ['IEC', 'EN', 'AS', 'ABNT', 'UNE', 'NTS', 'CEI', 'VDE', 'UTE', 'G98/G99'] |
| note | the V12 GL datasheet extraction returned the compliance list only at standards-body granularity (IEC, EN, AS, ABNT, UNE, NTS, CEI, VDE, UTE, G98/G99); individual clause numbers were not resolved and are therefore not recorded |
Warranty & service
| extension_options | UNKNOWN |
| note | no warranty statement appears in the fetched datasheet extraction |
| standard_warranty | UNKNOWN |
Documents
quick-guide
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
SG2.0-6.0RS Quick Installation Guide (Ver20) — located, not retrieved
rev Ver20
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| identity.product_status | active - listed on the official 2026 sungrowpower.com string-inverter index as 'SG3.0/3.6/4.0RS (3~4kW)' |
| manufacturer_legal_entity_as_printed | Sungrow Power Supply Co., Ltd. |