SAJ EK90 HS5-8K-S3-X (8 kW single-phase all-in-one)
Description
16,000 W solar intake with direct high-voltage storage coupling.
SAJ EK90 HS5-8KT3-X is an 8 kW three-phase All-in-One modular hybrid inverter unit delivering 16 kWp solar intake and 8,800 VA apparent power, engineered to stack cable-free atop 314 Ah BU5 battery bricks.
16,000 W Solar PV Input (200% Oversizing)
Double solar intake ensures rapid battery charging and daytime domestic self-consumption even on overcast winter days.
8,800 VA Apparent Three-Phase Output
Provides strong continuous power to run domestic appliances, heat pumps, and backup sub-panels.
Direct Cable-Free BU5 Stacking
Mates power and communication lines directly through internal busbars with zero exposed high-voltage DC conduit.
100% Phase Unbalanced Output
Dynamically diverts power to heavily loaded single-phase household circuits without drawing expensive grid electricity.
More product details
Modern residential homes demand high solar absorption to charge batteries and power appliances on cloudy winter days. The HS5-8KT3 accepts 16 kWp DC input, routing surplus solar directly into storage across a 300–600 V window.
- Dual independent MPPT channels (Isc 20 A) optimize multi-pitch residential stringing without current clipping.
- Wide MPPT window (180–900 V) optimizes harvest across extreme seasonal temperature swings.
- Symmetrical three-phase power export complies natively with European grid regulations.
SAJ HS5
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4 models
Rated AC power
8 kW
10 kW
12 kW
15 kW
Phase
Three-phase
Three-phase
Three-phase
Three-phase
MPPT trackers
3
3
3
3
Max. efficiency
98.2 %
98.2 %
98.2 %
98.2 %
Ingress protection
IP66
IP66
IP66
IP66
Furniture-grade single-column integration with internal busbars.
Stacking directly on top of BU5-6.0 / 7.0 / 9.0 kWh battery modules eliminates external high-voltage conduits, junction boxes, and messy communication patch leads. Internal push-in busbars pass high-voltage power and communication directly between inverter and battery modules. Eliminates exposed high-voltage DC wiring on garage and utility room walls, maximizing residential safety. IP65 cast-aluminum casing certified for clean indoor utility rooms or sheltered outdoor walls (-10 to +50 °C).
UPS in 10 ms or less.
Protected loads see backup at 8000 W rated and 16000 VA peak when the grid drops.
BU5 under a three-phase head.
Same closed blind-mate stack as the single-phase line - 1 to 6 packs, no cable battery interface.
Technical data
Furniture-grade three-phase energy management combining 200% solar oversizing with cable-free battery integration.
16 kWp solar intake with 8.8 kVA apparent power in an integrated 314 Ah tower.
Engineered for modern three-phase electrified households, the EK90 HS5-8KT3-X accepts up to 16,000 Wp of rooftop solar across dual 16 A MPPT channels. It delivers 8,800 VA maximum apparent power, stacking directly on commercial-grade 314 Ah BU5 modular battery bricks (6.0 to 27.0 kWh) to sustain heat pumps and vehicle charging with 100% phase-unbalanced compensation.
- Continuous 3-Phase Power
- 8,000 VA
- 200% Solar DC Intake
- 16,000 Wp
- Prismatic LFP Synergy
- 314 Ah
- External DC Conduits
- Zero
Inverter
- Rated AC power
- 8 kW
- Phase
- Three-phase (3L+N+PE)
- Max. PV input
- 16 kW
- MPPT trackers
- 3
- Max. efficiency
- 98.2%
- Whole-home backup
- built-in 63 A bypass, ≤10 ms switchover
Battery
- Cell
- 314 Ah LFP
- Module (EK90 BU5)
- 6 / 7 / 9 kWh packs
- Stackable capacity
- up to 6 packs → 6–54 kWh
- Cycle life
- 10,000 (SAJ datasheet banner states up to 12,000)
- Warranty
- 15 years (capacity retention per SAJ warranty policy)
EV charging
- Built-in DC EV charging
- Announced by SAJcurrently under development and coming soon
- V2H / V2G
- Announced by SAJcurrently under development and coming soon
Communication
- Interfaces
- WiFi / LAN / RS485
- App / EMS
- elekeeper 5.0 · eManager 5.0 (AI Saving 3.0)
- Metering
- Wireless-pro LoRa meter or DTSU666 + CTs
Model / Family
- Brand
- SAJ
- Model
- EK90 HS5-8KT3-X
- Series
- HS5 (EK90)
- Type
- Three-phase all-in-one
- Three-phase tiers
- 8 / 10 / 12 / 15 / 20 kW
Project fit
Where this model fits.
Scenarios that show which projects the SAJ EK90 HS5-8KT3-X (8 kW three-phase all-in-one) belongs in, what to verify before quoting, and when another model is the better pick.
Project scenario
High-Consumption Modern Residences (12–16 kWp PV) with Domestic EV Wallbox
Three-phase detached electrified homes running an EV charger alongside an air-to-water heat pump seeking clean single-tower integration.
8 kW continuous output delivers the power needed to charge EVs and run heat pumps, while 16 kWp solar intake ensures rapid battery replenishment.
- BoundaryIf the property requires higher continuous power output (10–20 kW) to sustain whole-home off-grid backup during winter blackouts, step up to the higher power models. ---
What Linker confirms with you
- If the property requires higher continuous power output (10–20 kW) to sustain whole-home off-grid backup during winter blackouts, step up to the higher power models. ---
Documents
SAJ EK90 HS5 Three-Phase Datasheet (EU)Product questions
What size AC circuit breaker is required for the HS5-8KT3-X?
3-pole 16 A or 20 A MCB; 5 × 2.5 mm² to 5 × 4 mm² copper cable. The HS5-8KT3-X delivers a nominal continuous output current of 11.6 A per phase (max output current 12.8 A @ 400 V). A 3-pole 16 A or 20 A miniature circuit breaker (MCB) is standard on the AC distribution board.
System components
Required components
SAJ eSolar Wireless-pro Meter
Item number: DLK-SAJ-ESOLAR-WIRELESS-PRO-METER
The inverter needs a grid-side meter to see household import/export in real time. This is what enables self-consumption
Chint DTSU666 three-phase meter (80 A)
Item number: DLK-CHINT-DTSU666
SAJ's smart-meter sheet lists DTSU666 as the three-phase 80 A RS485 meter when the Wireless-pro meter cannot be used.
Lazzen NDQ2S-63/3P
Item number: DLK-LAZZEN-NDQ2S-63
On the three-phase EK90 HS5, whole-home backup is built around a transfer switch that lets the entire house load switch
SAJ ATS1-T63-A automatic transfer switch
Item number: DLK-SAJ-ATS1T63A
For installations that want hands-off whole-home backup, the SAJ ATS panel automatically switches the whole-home load (u
Recommended components
SAJ eSolar AIO3 Pro
Item number: DLK-SAJ-ESOLAR-AIO3
This is the gateway that pushes system data to the cloud and app for remote monitoring, alarms/AI Care health checks.
SAJ EK90 BU5-6.0-TV / BU5-7.0-TV / BU5-9.0-TV
Item number: DLK-SAJ-EK90-BU5-6-0-TV
Storage capacity is scaled purely by adding modules, up to 6 battery modules per system (system energy configurable rou
Optional components
SAJ Integrated EVDC charging module
Item number: DLK-SAJ-INTEGRATED-EVDC-CHARGING-MODULE
Roadmap option only: SAJ marks bidirectional V2H/V2G as currently under development. Confirm availability and rating before adding it to the BOM.
SAJ eManager
Item number: DLK-SAJ-EMANAGER
For households that want deeper smart-energy control, coordinating extra loads, external meters and tariff-based optimi
SAJ Smart Wi-Fi Plug
Item number: DLK-SAJ-SAJ-SMART-PLUG
Enables load shifting: the AI energy manager can turn a specific appliance on when surplus solar or cheap-tariff energy is available.
Approved pairings
SAJ EK90 BU5-6.0-TV battery pack (6 kWh, 314 Ah LFP)Item number DLK-SAJ-EK90-BU5-6-0-TVBlind-mate stacking only: 1 to 6 BU5 packs (6/7/9 kWh, 100% DoD) under the HS5 unit. SAJ defers pack-combination rules to a battery combination datasheet that its Download Center does not carry, so the 21 permitted size combinations are undocumented - quote conservatively.
SAJ EK90 BU5-7.0-TV battery pack (7 kWh, 314 Ah LFP)Item number DLK-SAJ-EK90-BU5-7-0-TVBlind-mate stacking only: 1 to 6 BU5 packs (6/7/9 kWh, 100% DoD) under the HS5 unit. SAJ defers pack-combination rules to a battery combination datasheet that its Download Center does not carry, so the 21 permitted size combinations are undocumented - quote conservatively.
SAJ EK90 BU5-9.0-TV battery pack (9 kWh, 314 Ah LFP)Item number DLK-SAJ-EK90-BU5-9-0-TVBlind-mate stacking only: 1 to 6 BU5 packs (6/7/9 kWh, 100% DoD) under the HS5 unit. SAJ defers pack-combination rules to a battery combination datasheet that its Download Center does not carry, so the 21 permitted size combinations are undocumented - quote conservatively.