Four designed PV inputs
Two MPPTs can each accept two calculated string inputs.
Huawei publishes 30 A per MPPT with two strings, 20 A with one string and 40 A maximum short-circuit current.
Huawei FusionSolarPremium
Huawei SUN2000 20 kW Three-Phase Hybrid Solar Inverter
Exact reference · SUN2000-20K-MB0
A 20 kW three-phase hybrid inverter with four PV inputs across two MPPTs and two Huawei storage terminals. Batteries, SmartGuard, metering, external protection, backup circuits and optional communications hardware remain separate.
- Three-phase output
- 20,000 W · 3W/N+PE
Defines the rated AC output class; it does not approve the site service or connected loads.
- PV design allowance
- 30,000 Wp recommended maximum
String voltage, full-load voltage range and both per-input and combined MPPT current still govern the array.
- PV tracking
- 2 MPPTs · 4 inputs
Two inputs per tracker permit designed parallel strings, not four arbitrary strings.
- Storage architecture
- 2 LUNA S0/S1 terminals
The exact batteries, firmware and one- or two-string limits require project validation.
- Backup boundary
- SmartGuard · ≤100 ms · selected 1-phase loads
The separate MB0 backup path does not supply three-phase loads.
Do not select the 20 kW reference from nominal power alone. Confirm the service capacity, string allocation, full-load voltage range, combined MPPT current, storage architecture and backup-load requirements.
Pricing confirmed by quote
The written quote confirms the exact reference, required accessories, compatibility, delivery and commercial terms.
Availability confirmed in your written quote
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01 · Product role
What this product does in the system.
The SUN2000-20K-MB0 converts power from up to four deliberately allocated PV strings into grid-synchronised three-phase AC. Its two battery terminals can manage one or two compatible Huawei LUNA storage strings, while backup requires a separate SmartGuard-63A-T0 and is limited to selected single-phase loads. None of that separate equipment is included with the inverter.
Relevant applications
- Professional three-phase solar systems with up to four calculated PV strings
- Projects planning one or two compatible Huawei LUNA2000 S0 or S1 storage strings
- Sites requiring selected single-phase backup loads through a separately designed SmartGuard path
Why ReneWave may shortlist it
- Four PV inputs can accommodate two strings per MPPT when both the individual-string and combined-tracker limits are satisfied.
- Two storage terminals support reviewed one- or two-string Huawei LUNA architectures.
- SmartGuard-63A-T0 provides a documented route to selected single-phase backup loads; three-phase loads remain on the non-backup outputs.
- FusionSolar keeps commissioning, monitoring and alarm follow-up in one ecosystem.
Built-in capabilities
Four functions, read before the headline specifications.
Solar DC becomes three-phase AC
The inverter converts photovoltaic DC into synchronised three-phase AC for protected distribution.
Rated output is 20,000 W, with 22,000 VA maximum apparent power.
One or two LUNA strings can be integrated
Two storage terminals support validated Huawei LUNA2000 S0 or S1 architectures.
Huawei publishes 21 kW maximum charging with one storage string, 25 kW with two and 22 kW maximum discharge.
Commissioning stays visible
Integrated WLAN and RS485 support FusionSolar commissioning, monitoring and alarm follow-up.
Ethernet and cellular communication require optional compatible equipment.
Inside the energy system
One inverter. Different energy paths.
Solar conversion inside the inverter. Storage, external protection and configured load circuits remain separate.
Four designed string inputs pass through two MPPTs and the MB0 to serve protected three-phase site loads. Utility remains the direct AC reference.
Read the technical explanation
Higher three-phase capacity with four designed PV inputs and dual storage interfaces.
The SUN2000-20K-MB0 combines four PV inputs, two trackers, three-phase conversion and two Huawei storage terminals. LUNA storage, SmartGuard, metering, external protection, backup circuits and optional communications remain separate equipment.
Full-load voltage matters
The operating array must satisfy the 200–1,000 V MPPT window and the tighter 480–800 V full-load range when the inverter is expected to deliver full rated output. Four connectors remain two electrical trackers, so parallel strings must pass both individual and combined-current checks.
Backup remains a controlled single-phase branch
One or two compatible LUNA strings can be integrated after exact models, firmware, current limits and commissioning settings are confirmed. With MB0, the separate SmartGuard-63A-T0 backup port supplies selected single-phase loads only; three-phase loads remain on non-backup outputs.
02 · Specifications
Ratings, dimensions and practical consequence.
PV input
- Recommended maximum PV power
30,000 Wp
- Maximum input voltage
1,100 V
- Start and rated voltage
200 V · 600 V
- MPPT and full-load ranges
200–1,000 V · 480–800 V full load
- PV inputs
2 MPPTs · 4 inputs total
- Current limits
30 A per MPPT with two strings · 20 A with one · 40 A maximum Isc
Three-phase AC output
- Rated and maximum apparent power
20,000 W · 22,000 VA
- Rated output current at 400 V
28.9 A
- Maximum output current at 400 V
31.9 A
- Nominal voltage
220/380 V · 230/400 V · 240/415 V · 3W/N+PE
- Efficiency
98.4% maximum · 98.1% European weighted
Storage and backup interface
- Storage terminals
2 · Huawei LUNA2000 S0 / S1
- Battery operating range and current
600–980 V · 26.25 A maximum per string
- Maximum charging power
21 kW one string · 25 kW two strings
- Maximum discharging power
22 kW
- Commissioned utility charging
15 kW documented maximum
- Backup device and boundary
SmartGuard-63A-T0 · ≤100 ms · selected single-phase loads only
Installation and communications
- Enclosure and cooling
IP66 · smart-air cooling
- Dimensions
546 × 460 × 228 mm
- Weight
21 kg
- Communications
Integrated WLAN · RS485 · optional WLAN-FE or 4G dongle
03 · Confirm before quotation
Four checks before this reference is quoted.
ReneWave confirms the electrical context, connected equipment, installation conditions and configuration path before the exact reference enters a written quote.
- 01
PV strings
Confirm cold Voc, operating voltage, module count, the 480–800 V full-load range and both per-string and combined-MPPT current for all four inputs.
- 02
Three-phase AC
Confirm service capacity, the 3W/N+PE arrangement, 50 Hz grid code, anti-islanding, protection and project export-control requirements.
- 03
Storage and backup
Confirm exact LUNA S0/S1 references, firmware, one- or two-string limits, metering, SmartGuard and the selected single-phase backup circuits.
- 04
Installation and monitoring
Confirm smart-air cooling clearances, temperature derating, AC/DC protection, earthing, FusionSolar ownership and optional communications.
04 · Documents & warranty
Keep the exact reference traceable.
Documents shown here support selection and handover. The accepted order and exact manufacturer warranty document control.
SUN2000-(12K-25K)-MB0 Datasheetdatasheet · Global family record · EnglishApril 2025 edition · product family
SUN2000-(12K-25K)-MB0 User Manualmanual · Global · EnglishIssue 21 · 2026-06-30 · product family
Huawei Residential Smart PV Warranty Policy V2.1warranty · Global policy · order-specific terms apply · EnglishIssue 04 · 2025-11-30 · product family
Manufacturer warranty reference
10 years · current residential Smart PV policy
- Manufacturer commercial warranty subject to the current policy and supplied product record
- ReneWave Customer Care manages document and warranty assistance
05 · Complete the system
Accessories and adjacent equipment, in one request.
Select relevant companions now. ReneWave still verifies quantities and compatibility before they appear in the written quote.
Recommended companions
Huawei FusionSolar · SMARTLOGGER3000A
Huawei SmartLogger3000A PV Plant Communications ControllerAdds plant-level communications, commissioning and supported control coordination. Use only after the exact SmartLogger suffix, RS485 topology, inverter firmware and FusionSolar ownership are confirmed.
CHINT · DTSU666-H-100A
CHINT DTSU666-H 100 A Three-Phase Smart Power SensorAdds three-phase current, voltage, power and energy measurement for a compatible Huawei control architecture. Confirm that 100 A measurement is sufficient, then verify CT orientation, phase sequence, RS485 settings, firmware and control mode.
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