SAJ EK90 HS5-12KT3-X (12 kW three-phase all-in-one)
Description
3-pitch commercial tracking with 200% solar oversizing.
SAJ EK90 HS5-15KT3-X is a 15 kW three-phase All-in-One commercial-grade modular hybrid inverter unit delivering 16,500 VA maximum apparent power and 30 kWp solar intake across 3 independent 20 A MPPT channels, engineered to stack cable-free atop 314 Ah BU5 battery bricks.
15,000 VA Continuous Three-Phase Power (23.9 A Max)
Commercial-grade continuous output drives heavy machinery, multi-zone HVAC, and dedicated emergency sub-panels.
3 Independent 20 A MPPT Trackers (1+1+2 Strings)
Eliminates string mismatch across complex multi-pitch roofs, accepting 600W+ high-power bifacial modules.
30,000 W Solar PV Intake (200% Oversizing)
Massive solar absorption channels daytime generation into facility loads and high-voltage storage.
Direct Cable-Free BU5 Stacking
Mates power and communication lines directly through internal busbars with zero exposed high-voltage DC conduit.
More product details
Sprawling multi-pitch roofs with 3 distinct pitch orientations suffer heavy mismatch losses if combined on fewer trackers. The HS5-15KT3 provides 3 independent 20 A MPPT channels (Isc 25 A) to optimize 4 strings of modern 600W+ bifacial modules.
- 3 MPPT channels allow dedicated tracking for East, South, and West pitches with zero cross-string clipping.
- Absorbs up to 30,000 W of solar generation, routing daytime power directly into facility loads and BU5 storage.
- Wide MPPT operating window (150–900 V) optimizes harvest across extreme seasonal temperature swings.
SAJ HS5
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4 models
Rated AC power
15 kW
10 kW
12 kW
20 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 15000 W rated and 30000 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
Commercial-grade three-phase energy management engineered for high-demand agricultural and residential facilities.
30 kWp solar intake with 3 MPPTs and 16.5 kVA apparent power in an integrated tower.
Upgrading to a 3-MPPT commercial-grade platform, the EK90 HS5-15KT3-X accepts up to 30,000 Wp of solar input across 3 independent 20 A MPPT trackers (Isc 25 A). It delivers 16,500 VA maximum apparent power, stacking directly on 314 Ah BU5 modular battery bricks (6.0 to 27.0 kWh) to sustain commercial workshops and multi-split heat pumps with 100% phase-unbalanced compensation.
- Continuous 3-Phase Power
- 15,000 VA
- 200% Solar DC Intake
- 30,000 Wp
- High String Current
- 20 A / MPPT
- External DC Conduits
- Zero
Inverter
- Rated AC power
- 15 kW
- Phase
- Three-phase (3L+N+PE)
- Max. PV input
- 30 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 HS5-15KT3-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 HS5-15KT3-X (15 kW three-phase all-in-one) belongs in, what to verify before quoting, and when another model is the better pick.
Project scenario
Large Multi-Family Residences & Commercial Workshops (20–30 kWp PV)
Multi-family properties, agricultural workshops, or commercial auto repair garages running three-phase tools and multi-split heat pumps.
15 kW continuous AC output provides the extra capacity needed to run machinery without grid draw, while 30 kWp solar intake ensures rapid battery charging.
- BoundaryIf the facility requires maximum commercial power throughput (20 kW / 22 kVA continuous), step up to the HS5-20KT3-X (20 kW flagship). ---
What Linker confirms with you
- If the facility requires maximum commercial power throughput (20 kW / 22 kVA continuous), step up to the HS5-20KT3-X (20 kW flagship). ---
Documents
SAJ EK90 HS5 Three-Phase Datasheet (EU)Product questions
What size AC circuit breaker is required for the HS5-15KT3-X?
3-pole 32 A or 40 A MCB; 5 × 6 mm² to 5 × 10 mm² copper cable. The HS5-15KT3-X delivers a nominal continuous output current of 21.7 A per phase (max output current 23.9 A @ 400 V). A 3-pole 32 A or 40 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.