SAJ H2-25K-T3
SAJ H2-25K-T3 is a 25 kW three-phase hybrid inverter with three MPP trackers, 45 kWp of PV input and two battery inputs at 180 to 800 V.
- 97.6% Euro efficiency (98.0% peak), identical across every 15–30 kW T3 model in this range, per SAJ's EU datasheet.
- Full-rated backup power output with UPS switchover in ≤20 ms, so protected circuits ride through a grid loss without a noticeable break.
- 3 MPPT inputs on an 180–800V DC battery window, sized to stack SAJ's B2/BU2 HV modules to the storage size a project needs.
- IP65-rated chassis for -40°C to +60°C outdoor or plant-room mounting, no extra enclosure needed.
- Three Phase
- Phase
- 98.0 %
- Max. efficiency
- 180~800 V
- Battery voltage
- IP65
- Ingress protection
- Manufacturer
- SAJ
- Model code
- H2-25K-T3
- Item no.
- DLK-SAJ-H225KT3
- Delivery
- Germany delivery estimate: EUR 39–90 · The final delivery charge is included in your Proforma.
Plan with H2-25K-T3
New system, extension or replacement? Linker Advisor starts from this article and asks only for what is still open — existing model, quantity, postcode, installation date.
Figures transcribed from the manufacturer datasheet on file. Confirm your grid code and configuration with our engineers before ordering.
- GoodWe · SAJ · Pylontech · EcoFlow · Chint paired from the maker’s own lists
- Datasheets on file for every item
- Within 24 h engineering response
- MOQ 1 unit · EU delivery
- Engineering-checked configurations
Numbers that survive the bank's site audit.
Every figure below comes from the manufacturer datasheet on file — the same document your lender's technical advisor will request.
Nominal AC power
Max. apparent power
Max. PV input
Store sun. Sell peak.
Charge through solar noon, discharge into evening tariffs - up to 25 kW shifted on your tariff schedule.
PV side
Three MPP trackers at 40 A input each, 45000 Wp maximum array power, 180 to 900 V MPPT range, two strings per tracker.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Official SAJ render from the H2 datasheet.
SAJ H2 hybrid inverter with SAJ B2 battery tower installed at a home
SAJ H2 hybrid inverter wall-mounted, installer photo
SAJ H2 underside connection detail, installer photo
Real product photography, eye-gated 2026-07-11.
Specifications
Every value exactly as published in the official H2-25K-T3 documentation.
Documents
Complete the system
Balance-of-system and accessories paired with this model. Every pairing follows the manufacturer's official compatibility list.
SAJ B2 HV battery system (BC2-HV1 control unit + BU2-5.0-HV1/HV5 modules, 5.0–25.0 kWh stackable)
Chint DTSU666 three-phase meter
- [1]SAJ B2 HV battery system (BC2-HV1 control unit + BU2-5.0-HV1/HV5 modules, 5.0–25.0 kWh stackable)
- [2]Chint DTSU666 three-phase meter
SAJ ATS1-T63-A automatic transfer switch (three-phase, 63A)
- [1]SAJ ATS1-T63-A automatic transfer switch (three-phase, 63A)
What this unit is approved to run with.
Every pairing below traces to a manufacturer compatibility list, by document version and date. A pairing only one maker lists is marked; we quote it, an engineer confirms it.
SAJ B2-10.0-HV1
Item no. DLK-SAJ-B2100HV1 On SAJ's compatibility list
SAJ B2-10.0-HV5
Item no. DLK-SAJ-B2100HV5 On SAJ's compatibility list
SAJ B2-15.0-HV1
Item no. DLK-SAJ-B2150HV1 On SAJ's compatibility list
SAJ B2-15.0-HV5
Item no. DLK-SAJ-B2150HV5 On SAJ's compatibility list
SAJ B2-20.0-HV1
Item no. DLK-SAJ-B2200HV1 On SAJ's compatibility list
SAJ B2-20.0-HV5
Item no. DLK-SAJ-B2200HV5 On SAJ's compatibility list
SAJ B2-25.0-HV1
Item no. DLK-SAJ-B2250HV1 On SAJ's compatibility list
SAJ B2-25.0-HV5
Item no. DLK-SAJ-B2250HV5 On SAJ's compatibility list
Pick the rating
SAJ family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Configuration 2
All four models carry three MPP trackers with two strings per tracker and 40 A input per tracker, on a 180 to 900 V MPPT window with 1000 V maximum DC.
- H2-15K-T3: 30000 Wp maximum array power.
- H2-20K-T3: 40000 Wp.
- H2-25K-T3 and H2-30K-T3-DE: 45000 Wp.
- Connection: MC4 PV connectors, with a 50 A short-circuit rating per tracker.
The battery side takes LiFePO4 packs from 180 to 800 V on two inputs, each rated 50 A charge and discharge.
- SAJ stack: SAJ's configuration instructions name the H2 inverter with BU2 series batteries or the BC2 series battery control unit; the B2 HV system scales from 5.0 to 25.0 kWh per stack.
- Pylontech: FH48074, FH9637M and FH10050 are listed as compatible packs.
- Check: confirm the assembled pack voltage sits inside the 180 to 800 V window at your module count.
Availability & compliance 1
The datasheet standards row lists VDE-AR-N 4105 and VDE 0126-1-1, alongside EN 50549 and the other European grid codes.
- H2-30K-T3-DE: SAJ caps this variant at 29999 W rated power, 29999 VA and 43.4 A output; order the variant your grid operator requires.
- H2-25K-T3 vs -BE: the -BE column is capped at 25000 VA and 36.3 A where the standard model reaches 27500 VA and 39.9 A.
- Paperwork: request the unit certificates for plant registration together with the quote.
Installation & wiring 1
SAJ's own documentation names the transfer switch and the meter for this platform; both are listed on de-linker as separate products.
- Transfer switch: the SAJ ATS1-T63-A (three-phase, 63 A) lists H2-15/20/25/30K-T3 by name on its compatible-inverter row.
- Metering: the Chint DTSU666 three-phase meter is the model SAJ specifies in its accessories catalogue for smart meter and CT integration.
- Wiring: AC lands on a terminal block or quick connector; PV strings use MC4.
- Comms: Wi-Fi and Ethernet on board, 4G optional.
Operation & warranty 2
The backup output carries the model's full rated power continuously and switches over in 20 ms or less, per SAJ.
- Peak reserve: 22500 VA on the 15K, 30000 VA on the 20K, 37500 VA on the 25K and 45000 VA on the 30K-DE, each held for 3 seconds.
- Output quality: THDv below 3% at linear load.
- Protection set: anti-islanding, AC short-circuit and overload protection are integrated.
SAJ backs the H2 T3 units with a 10-year warranty and rates them for outdoor mounting.
- Temperature: -40 to +60 C, with derating above 45 C.
- Altitude: up to 4000 m, derating above 3000 m.
- Enclosure: IP65, 576 x 659 x 242 mm, 50 kg, intelligent fan cooling, noise below 50 dBA.
- Efficiency: 98.0% maximum and 97.6% Euro efficiency, identical across the four models per SAJ's EU datasheet.
General 1
The datasheet lists H2-25K-T3 and H2-25K-T3-BE as separate columns, each with its own maximum apparent power and output current.
- H2-25K-T3: 27500 VA maximum apparent power, 39.9 A maximum output current
- H2-25K-T3-BE: capped at 25000 VA, 36.3 A maximum output current
Order the variant your grid code requires.
Send the project. Hear from an engineer within 24 hours.
Loads, tariff, site constraints - our engineers reply with a compatibility check and a sizing recommendation.
Contact project supportOr write to linker01@de-linker.com — attach your load profile if you have one.