What is the GW6K-DNS-G40?
- Rated output: 6,000 W, with maximum active and apparent power of 6,000 W / 6,000 VA, single phase at 220 / 230 / 240 V
- DC side: 2 MPPTs (1 string each), 20 A per MPPT, 26 A short-circuit rating, 600 V maximum PV voltage
- Efficiency: 98.1% peak, 97.4% European weighted, 27.3 A maximum output current
- Build: IP66 rated, fan-free natural convection cooling, 25 dB noise, only 9.2 kg
- Warranty: 5 years standard, extendable up to 20 years under the Global Rev 5.2 warranty document
The GoodWe GW6K-DNS-G40 from the DNS G4 series is a 6,000 W single-phase grid-tied inverter built specifically for homes: 9.2 kg, IP66 rated, and completely fan-free. It is one of the units our engineering team specifies when designing rooftop systems for single-phase houses and townhouses across Phuket. This page explains what each datasheet line means for panel selection and mounting position, rather than repeating the table. Size your system roughly with our calculator, then see the rest of our equipment.
What is the GW6K-DNS-G40 and which homes is it right for?
The GW6K-DNS-G40 is a pure grid-tied inverter with no battery circuit and no backup output. Its job is to convert solar DC into single-phase household AC and cut the daytime electricity bill; when the grid fails it stops, as safety rules require. What sets it apart from typical residential inverters is its DC current capability: 20 A per MPPT with a 26 A short-circuit rating, which comfortably accommodates today's high-current panels that increasingly bump against the limits of older inverters. Maximum PV voltage is 600 V with a wide 40 – 560 V MPPT operating window and a 50 V startup voltage. That very low bottom end means the system begins generating early in the morning and keeps working under heavy overcast. One design detail to respect: if voltage climbs beyond the 560 – 600 V region the unit enters standby, so string length must allow for the higher open-circuit voltage that appears on a cool morning. Mechanically, IP66 sealing with fan-free natural convection gives a 25 dB noise figure and removes the most common wear point. The datasheet does not state a numerical maximum PV input power, so the design is driven by the current and voltage limits above.
Highlights from the datasheet
- 20 A per MPPT with a 26 A short-circuit rating: this is the figure that keeps the unit compatible with current-generation panels. High-output modules carry more current, and a residential inverter with a low DC current limit forces you into older panels or wasted capacity.
- Just 9.2 kg at 358 x 323 x 165 mm: light weight is not a quality compromise here, it is a mounting advantage. It opens up wall positions that could not carry a heavier unit, and two technicians can install it without lifting equipment.
- IP66 with no fan: no fan aperture means no route for humid, salt-laden air to enter. Combined with IP66 water-jet protection, that makes outdoor mounting under a narrow eave a realistic option rather than a compromise.
- 25 dB noise: quiet enough to sit near a bedroom or hallway. Fan-cooled inverters are quiet in the morning and noticeably louder at midday, precisely when the household is producing most power; this unit has no such behaviour.
- Wide 40 – 560 V MPPT window starting at 50 V: the low threshold gets production going in weak light and keeps it running through drizzle — a common condition during the Phuket monsoon rather than an edge case.
- Under 1 W consumption at night: the inverter does not become a small overnight load, a detail that quietly affects cumulative return across the system's life.
- Limitations worth stating: only 2 MPPTs with one string each, so the array can be split into two groups at most. Roofs needing more than two orientations call for a different model, and the datasheet publishes no numerical maximum PV input power.
Key specifications (GW6K-DNS-G40)
| Specification | Datasheet value |
|---|---|
| Nominal Output Power | 6,000 W |
| Max. AC Active Power / Max. AC Apparent Power | 6,000 W / 6,000 VA |
| Max. PV Input Power | |
| Max. PV Input Voltage | 600 V (ถ้าเกิน 560-600 V เครื่องเข้าโหมด standby) |
| MPPT Operating Voltage Range | 40 – 560 V (แรงดันเริ่มทำงาน 50 V, แรงดันเข้าปกติ 360 V) |
| Number of MPP Trackers / Strings per MPPT | 2 MPPT / 1 สตริงต่อ MPPT |
| Max. Input Current per MPPT | 20 A |
| Max. Short Circuit Current per MPPT | 26 A |
| Max. Output Current | 27.3 A |
| Nominal Output Voltage / Grid Frequency | 220 / 230 / 240 V, L/N/PE (1 เฟส), 50/60 Hz (ช่วงแรงดันขาออก 196 – 311 V) |
| Max. Efficiency / European Efficiency | 98.1% / 97.4% |
| Ingress Protection Rating | IP66 |
| Operating Temperature Range | -25 ~ +60 °C (ความชื้น 0 – 100%, ระดับความสูงต่ำกว่า 4,000 m) |
| Noise Emission / Self-consumption at Night | 25 dB / น้อยกว่า 1 W (ระบายความร้อนแบบ Natural Convection) |
| Weight / Dimensions (W x H x D) | 9.2 kg / 358 x 323 x 165 mm |
| Standard Warranty | 5 ปี (ขยายได้สูงสุดถึง 20 ปี ตามเอกสารรับประกัน Global Rev 5.2) |
Note: every figure above comes straight from the GoodWe Technologies Co., Ltd. (ชื่อที่ใช้ในหน้า About Us และเอกสารรับประกันทางการ) — ชื่อ Jiangsu GoodWe Power Supply Technology Co., Ltd. เป็นชื่อที่ปรากฏในข้อมูลบริษัทจดทะเบียน รหัสหุ้น 688390 datasheet. Actual system design (strings per MPPT, cable sizing, breakers) must be calculated for each site.
Why this model suits Phuket
- Heavy rain and year-round humidity: IP66 exceeds the IP65 rating common on residential inverters, and the absence of a fan removes the main entry path for moisture. That combination is aimed squarely at monsoon conditions.
- Most homes here are single phase: a large share of Phuket townhouses and detached homes run on a single-phase meter, and the 220 / 230 / 240 V L/N/PE output connects to that supply without any change to the incoming service.
- Limited installation space: town properties rarely have a dedicated plant room. At 358 x 323 x 165 mm, 9.2 kg and 25 dB, this unit is far easier to place than a large fan-cooled alternative.
- PEA territory: we handle the PEA permits process from documentation through to inspection, and check the selected model's registration status with PEA before filing.
Who it suits
- Single-phase houses and townhouses: homes where most consumption happens during daylight, such as households working from home or with family at home during the day
- Owners prioritising payback: a grid-tied system without storage costs less to install and returns value directly through bill reduction
- Roofs split across no more than two orientations: with 2 MPPTs taking one string each, a two-plane roof matches the inverter's capability exactly
- Homes using current-generation high-output panels: 20 A per MPPT keeps panel selection open without hitting the current ceiling
- Properties needing outdoor mounting: narrow eaves or an exterior side wall, where IP66 and fan-free construction provide real reassurance
Summary
The GW6K-DNS-G40 covers what a Phuket home genuinely needs: 6,000 W of output, 20 A per MPPT for modern panels, IP66 sealing, 25 dB operation and a 9.2 kg body that fits almost anywhere. The constraints to settle early are the two MPPTs at one string each and the absence of a published maximum PV input power, which means string design must be calculated from the actual panel model. If you also want power during outages, a hybrid model is the right direction instead — see hybrid with battery backup. Review our services or contact us for a roof survey.
See other models from this brand on the GoodWe overview, or browse all the equipment we install.
Download the datasheet (PDF) — full manufacturer specification sheet