SAJ EK90 HS5-15KT3-X (15 kW three-phase all-in-one)
Description
40,000 W solar intake with heavy continuous three-phase power.
SAJ EK90 HS5-20KT3-X is the flagship 20 kW three-phase All-in-One commercial modular hybrid inverter unit delivering 22,000 VA maximum apparent power and 40 kWp solar intake across 3 independent 20 A MPPT channels, engineered to stack cable-free atop 314 Ah BU5 battery bricks.
20,000 VA Continuous Commercial Output (31.9 A Max)
Delivers massive three-phase power throughput (22 kVA max) to drive heavy manufacturing machinery and whole-facility emergency power.
40,000 W Solar PV Input (200% Oversizing)
Massive solar absorption channels daytime generation into three-phase loads and high-voltage storage.
3 Independent 20 A MPPT Trackers (1+1+2 Strings)
Eliminates string mismatch across sprawling warehouse roofs, accepting 600W+ high-power bifacial modules.
Direct Cable-Free BU5 Stacking
Mates power and communication lines directly through internal busbars with zero exposed high-voltage DC conduit.
More product details
Built for commercial manufacturing plants, agricultural facilities, and large luxury estates, the HS5-20KT3 delivers 31.9 A maximum continuous current across L1, L2, and L3, powering heavy machinery without utility grid purchases.
- 3 MPPT channels allow dedicated tracking for diverse warehouse roof slopes with zero inter-string mismatch.
- Absorbs up to 40,000 W of solar generation, routing daytime power directly into facility loads and BU5 storage.
- 100% phase-unbalanced output eliminates grid draw on asymmetric commercial loads.
SAJ HS5
Compare different models
Scroll sideways to compare every model.
4 models
Rated AC power
20 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 20000 W rated and 40000 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
The apex commercial All-in-One energy hub engineered for heavy industrial electrification and microgrids.
40 kWp solar intake with 3 MPPTs and 20 kW continuous output in a modular tower.
Maxing out SAJ's EK90 All-in-One lineup, the HS5-20KT3-X delivers 20,000 W continuous AC output (22,000 VA max) across 3 balanced phases. It processes up to 40,000 Wp of solar input across 3 independent 20 A MPPT channels, stacking directly on 314 Ah BU5 modular battery bricks (6.0 to 27.0 kWh) to provide high-power commercial heating, fleet charging, and whole-facility backup in a single vertical column.
- Continuous 3-Phase Power
- 20,000 VA
- 200% Solar DC Intake
- 40,000 Wp
- High String Current
- 20 A / MPPT
- External DC Conduits
- Zero
Inverter
- Rated AC power
- 20 kW
- Phase
- Three-phase (3L+N+PE)
- Max. PV input
- 40 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 HS5-20KT3-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 HS5-20KT3-X (20 kW three-phase all-in-one) belongs in, what to verify before quoting, and when another model is the better pick.
Project scenario
Large Commercial Workshops & High-Demand Agricultural Plants (25–40 kWp PV)
Metal fabrication workshops, grain drying facilities, or luxury multi-family complexes running three-phase tools and multi-split heat pumps.
20 kW continuous AC output provides the extra capacity needed to run machinery without grid draw, while 40 kWp solar intake ensures rapid battery charging.
- BoundaryIf total commercial solar capacity is under 30 kWp and continuous building load stays under 15 kW, step down to the HS5-12KT3 or HS5-15KT3. ---
What Linker confirms with you
- If total commercial solar capacity is under 30 kWp and continuous building load stays under 15 kW, step down to the HS5-12KT3 or HS5-15KT3. ---
Documents
SAJ EK90 HS5 Three-Phase Datasheet (EU)Product questions
What size AC circuit breaker is required for the HS5-20KT3-X?
3-pole 40 A or 50 A industrial MCB; 5 × 10 mm² to 5 × 16 mm² copper cable. The HS5-20KT3-X delivers a nominal continuous output current of 29.0 A per phase (max output current 31.9 A @ 400 V). A 3-pole 40 A or 50 A industrial 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.