SAJ HS3-5K-T2-W/G-PX
Description
Furniture-grade single-column integration with internal busbars.
SAJ HS3-6K-T2-W/G-PX is a 6 kW three-phase All-in-One modular hybrid inverter unit delivering 12 kWp solar intake across dual 20 A MPPT channels, engineered to power domestic heat pumps while stacking cable-free atop BU3 battery bricks in a slim 17 cm column.
20 A High-Current Dual MPPTs (Isc 25 A), 100% compatible with modern 600W+ high-power bifacial panels with zero DC current clipping.
Cable-Free Modular Tower Stacking
Interlocks mechanically and electrically with battery bricks directly beneath the chassis, eliminating exposed high-voltage DC conduit.
12,000 Wp Solar PV Input (200% Oversizing)
Double solar intake ensures rapid battery charging and domestic self-consumption even on overcast winter days.
Ultra-Slim 17 cm Column Depth
Furniture-grade vertical column hugs residential garage and utility room walls closely.
More product details
Traditional hybrid installations require wall-mounting an inverter, floor-standing a battery, and running multiple high-voltage DC conduits and communication cables between them. The HS3 integrates everything into a single vertical column.
- 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.
- Ultra-slim 17 cm profile preserves floor space in narrow domestic garages and utility corridors.
HS3
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4 models
Rated AC power
6 kW
5 kW
8 kW
10 kW
Phase
3L+N+PE
3L+N+PE
3L+N+PE
3L+N+PE
MPPT trackers
2
2
2
2
Max. efficiency
98.0 %
98.0 %
98.0 %
98.0 %
Battery voltage
380-500 V
380-500 V
380-500 V
380-500 V
Ingress protection
IP65
IP65
IP65
IP65
Weight
34 kg, inverter only
34 kg, inverter only
34 kg, inverter only
34 kg, inverter only
Dimensions
450*695*170 mm (H*W*D), inverter only
450*695*170 mm (H*W*D), inverter only
450*695*170 mm (H*W*D), inverter only
450*695*170 mm (H*W*D), inverter only
20 A high-current tracking with 200% solar oversizing.
Modern large-format solar panels produce operating currents exceeding 14 A. The HS3 features dual 20 A MPPT channels (Isc 25 A) to capture 100% of solar generation across 12 kWp arrays. Dual 20 A MPPT channels optimize multi-pitch residential stringing without current clipping. Wide MPPT window (180–900 V) optimizes harvest across extreme seasonal temperature swings. IP65 cast-aluminum casing certified for clean indoor or sheltered outdoor installations (-40 to +60 °C).
18.4 A into BU3.
Discharge current steps up from the 5K while the battery window stays 380-500 V on BU3.
6 kW backup on three phases.
Backup power matches the AC rating when the grid drops, on the same slim IP65 chassis.
Technical data
Furniture-grade energy management combining high-capacity solar harvesting with cable-free battery integration.
12 kWp solar intake powering daytime heat pumps from a cable-free All-in-One tower.
Sized for residential heat pump installations, the HS3-6K-T2-W/G-PX absorbs up to 12,000 Wp of rooftop PV across dual 20 A MPPT channels. It delivers 6,600 VA maximum apparent power, stacking seamlessly on top of modular storage bricks to maintain a clean single-column footprint while powering heat pumps and charging storage simultaneously.
- Continuous 3-Phase Power
- 6,000 VA
- 200% Solar DC Intake
- 12,000 Wp
- High String Current
- 20 A / MPPT
- External DC Conduits
- Zero
Inverter
- Series
- HS3
- Kw
- 6
- Phase
- 3
- Bat kwh
- 5-40
Solar Input
- MPPT trackers
- 2 MPPT
- Max a mppt
- 20
Battery
- Bat module
- BU3-5.0-TV2-PRO
- Bat kwh
- 5-40
- Bat modules
- 1-8
Physical
- Depth mm
- 170
- Heating
- Yes
- IP rating
- IP65
- Operating temperature
- -30 to +50
Project fit
Where this model fits.
Scenarios that show which projects the SAJ HS3-6K-T2-W/G-PX belongs in, what to verify before quoting, and when another model is the better pick.
Project scenario
Modern Single-Family Residences with Modulating Heat Pumps (8–12 kWp PV)
Homes with an inverter-driven heat pump and 8–12 kWp solar seeking a sleek, single-column All-in-One storage system.
6 kW AC power delivers the extra electrical headroom needed for heat pump compressor cycles, while 12 kWp solar intake ensures ample power to heat the home and fully charge storage before sunset.
- BoundaryIf the property uses district heating or gas, has no heat pump planned, and roof capacity is under 8 kWp, step down to the HS3-5K to save capital expenditure. ---
What Linker confirms with you
- If the property uses district heating or gas, has no heat pump planned, and roof capacity is under 8 kWp, step down to the HS3-5K to save capital expenditure. ---
Documents
SAJ HS3 5-12K T2 Three-Phase Battery Storage Datasheet (EN, 2025-06) SAJ HS3 (3K-12K) T2 Three-Phase ESS User Manual (EN, EU)Product questions
What battery modules are compatible with the HS3-6K-T2-W/G-PX?
Exclusively compatible with SAJ BU3-5.0-TV2-PRO battery modules. The HS3 series is an integrated All-in-One architecture. The inverter unit stacks directly onto SAJ BU3-5.0-TV2-PRO (5.0 kWh) battery modules using internal busbar connectors. It cannot be paired with standalone B2-HV1 or B2-HV5 batteries.
What size AC circuit breaker is required for the HS3-6K?
3-pole 16 A or 20 A MCB; 5 × 2.5 mm² to 5 × 4 mm² copper cable. The HS3-6K delivers a nominal continuous output current of 8.7 A per phase (max output current 9.6 A @ 400 V). A 3-pole 16 A or 20 A miniature circuit breaker (MCB) is standard for European installations.
System components
Recommended components
SAJ BU3-5.0-TV2-PRO battery modules (up to 8, 5.0–40.0 kWh)
Item number: DLK-SAJ-BU350TV2PRO
SAJ's HS3 datasheet scalability row: 'BU3-5.0-TV2-PRO, up to 8 battery modules.' HS3 does not take the BU2 (SAJ's own Configuration Instructions confirm the HS2-only BU2 pairing separately).
Chint DTSU666 three-phase meter
Item number: DLK-CHINT-DTSU666
Same DTSU666 model SAJ specifies in its own accessories catalogue; HS3 is a three-phase unit.
Optional components
SAJ ATS1-T63-A automatic transfer switch (three-phase, 63A)
Item number: DLK-SAJ-ATS1T63A
ATS1's own datasheet compatible-inverter row lists HS3-5/6/8/10/12K-T2-W/4G-EX by name.