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SAJ CHS3 125 kW / 261 kWh (1500V C&I hybrid storage, 2026 flagship)
SAJ PV Hardware

SAJ CHS3 125 kW / 261 kWh (1500V C&I hybrid storage, 2026 flagship)

SAJ's 2026 C&I flagship: the CHS3 hybrid solution pairs the CH3-125K hybrid inverter with the CB3-L261 liquid-cooled 261 kWh LFP battery cabinet — DC-coupled storage with built-in EMS and STS covering grid-tied, backup, off-grid and generator-hybrid operation.

  • 125 kW hybrid PCS + 261 kWh liquid-cooled LFP cabinet (314 Ah cells, 0.5C) — up to 4 cabinets per inverter for 2–8 h durations
  • DC-coupled with built-in STS: ≤20 ms transfer, up to 10 units off-grid parallel without an external STS
  • Built-in EMS with 100 Mbps Ethernet; up to 20 units on-grid expansion
  • Generator-hybrid and VPP-ready · German B2B project stock · request a quote
261 kWh
Nominal energy
Manufacturer
SAJ
Model code
CHS3 125 kW / 261 kWh
Item no.
DLK-SAJ-CHS3125K
Delivery
Delivery included in your Proforma
Orderable · lead time confirmed after order

Plan with CHS3 125 kW / 261 kWh

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.

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Required to install — not in the box
Chint DTSU666-CT Grid-connection-point measurement for export limitation and site consumption monitoring where the DSO or the EMS strategy requires it — confirm the SAJ-approved meter configuration for the CH3 when quoting.
View
MBS KBU 58 400/5 A split-core current transformer, Class 0.5 Split-core CTs for the grid-point meter on C&I incomers; pick the ratio (400/5 up to 1000/5 available) to match the site's main breaker.
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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
CHS3 125 kW / 261 kWh, specified from the datasheet.
System logic

CHS3 125 kW / 261 kWh, specified from the datasheet.

Every value on this page is transcribed from the manufacturer documentation on file.

125 kW hybrid PCS + 261 kWh liquid-cooled LFP cabinet (314 Ah cells, 0.5C) — up to 4 cabinets per inverter for 2–8 h durations
DC-coupled with built-in STS: ≤20 ms transfer, up to 10 units off-grid parallel without an external STS
Built-in EMS with 100 Mbps Ethernet; up to 20 units on-grid expansion
In pictures

Inspect it before you spec it.

Official renders, installation photos and system panels for this model line.

Official manufacturer product render
Product

Official manufacturer product render

Documentation

Specifications

Every value exactly as published in the official CHS3 125 kW / 261 kWh documentation.

Max. PV array power250 kWp @STC (200% PV oversizing headline).CH3 family: 75K=150, 80K=160, 99.9K/100K=200, 110K=220, 125K=250 kWp
Max. DC voltage1250 V (EU-version datasheet)the global-version datasheet states 1500 V — confirm the applicable version for your project at quote
MPPT voltage range / rated DC voltage300–1250 V / 1050 V (EU version); start voltage 400 V
Max. DC input / short-circuit current40 A / 55 A
Strings per MPPT8×2 (99.9K–125K models; 75K/80K: 6×2)
Rated AC power / max. apparent power125 kW / 125 kVA (CH3-125K-T8).Family: 75 / 80 / 99.9 / 100 / 110 / 125 kW
Rated output current189.9 A @230 V per phase; 3/N/PE, 380/400 V, 50/60 Hz
Backup outputMax. 125 kWpeak 1.1× rated power continuous, 1.55× rated power for 1 s · output THDv < 3% (linear load)
Generator inputMax.125 kW / 189.9 A @230 V (EU version), 3/N/PE 380/400 V, 50/60 Hz
Power factor / THD0.8 inductive – 1 – 0.8 capacitive; THDi < 3%
EfficiencyMax. ≥98%; Euro ≥97.5%; max. battery-to-AC ≥98%
Battery interface (CH3)LFP, battery voltage range 750–950 V, max. charge/discharge current 200 A
Cell / configurationLFP 3.2 V / 314 Ah; configuration 1P52S×5S
Nominal energy / rate261 kWh per CB3-L261 cabinet; 0.5P charge/discharge rate
Nominal voltage / range / max. current832 V; 728–936 V; 188 A
Cooling / noise / fire suppressionLiquid cooling≤75 dB @1 m · pack-level aerosols + cabinet-level aerosols + water sprinkler
Cabinet enclosureIP55, anti-corrosion C4-Medium, -25 to +55 °C, 0–95% RH non-condensing, max. 3000 mdimensions 1030 × 2300 × 1400 mm (W×H×D) · weight ≤2400 kg · communication CAN
Energy managementBuilt-in EMS100 Mbps high-speed Ethernet communication · WLAN + App, LED indicators
Parallel operationUp to 10 units in off-grid parallel with integrated STS (no external STS module)up to 20 units on-grid expansion
Battery scaling per inverterUp to 4 × CB3-L261 liquid-cooled cabinets per CH3 inverter, enabling system durations from 2 to 8 hours
Protection featuresPV reverse polarity, anti-islanding, AC over-current/short-circuit/over-voltage protection, integrated DC switch, Type II DC & AC surge protection, PV terminal temperature detection, string-level disconnector integratedAFCI module optional
Ingress protection / coolingIP66; smart air cooling
Operating temperature range-30 °C to +60 °C (derating from 45–50 °C)ambient humidity 5–95% non-condensing · max. 3000 m
TopologyTransformerless
Dimensions / weight1027 × 895 × 342 mm (H×W×D); 135 kg
Warranty5/10 years per the CH3 EU datasheet (preliminary)the CB3 battery line is promoted with a 10-year cell warranty — confirm terms in SAJ's warranty policy at quote
Full datasheet (PDF) Ask an engineer
ProductSAJ CHS3 125 kW / 261 kWh (1500V C&I hybrid storage, 2026 flagship)

Complete the system

Balance-of-system and accessories paired with this model. Every pairing follows the manufacturer's official compatibility list.

Required
Chint DTSU666-CT grid meter
[1]

Chint DTSU666-CT grid meter

Grid-connection-point measurement for export limitation and site consumption monitoring where the DSO or the EMS strategy requires it — confirm the SAJ-approved meter configuration for the CH3 when quoting.
View product →
MBS KBU 58 400/5 A split-core CT set
[2]

MBS KBU 58 400/5 A split-core CT set

Split-core CTs for the grid-point meter on C&I incomerspick the ratio (400/5 up to 1000/5 available) to match the site's main breaker.
View product →
Recommended

Availability & compliance 2

Treat certification as open until confirmed, the current datasheet does not yet name the German standards.

  • The current CH3 EU datasheet is marked "Preliminary Version" and lists IEC 61727, IEC 62116, IEC 62109-1/-2 and EN 61000-6-2/-4
  • It does not yet name VDE-AR-N 4105 or VDE-AR-N 4110, which is what a German DSO will ask for on a 125 kW connection (typically the VDE-AR-N 4110 medium-voltage regime, depending on the connection point)
  • On the battery side, the CB3-L261's published safety features are its fire-suppression system (pack-level aerosols + cabinet-level aerosols + water sprinkler), IP55 enclosure and liquid cooling; an IEC 62619 listing is not shown on the current datasheet, so do not quote it
  • Request a quote and we confirm the current certificate set and unit certificates with SAJ for your specific grid-connection case

Design to the EU-version limits, the global and EU datasheets differ.

  • SAJ's global marketing headlines the CHS3 as the world's first 1500V PV / 400VAC hybrid inverter, and the global-version CH3 datasheet states 1500 V max. DC input with a 300-1500 V MPPT range
  • The EU-version CH3 datasheet (CH3-125K-T8-EU) specifies 1250 V max. DC input and a 300-1250 V MPPT window (rated 1050 V, start 400 V); SAJ's own EU material also promotes '1250V PV string inputs' with up to 18% BOS/cabling savings
  • For a German project, design strings to the EU-version limits and confirm the datasheet revision applicable to the delivered units at quote
  • Both versions are currently marked "Preliminary"

Configuration 3

Two building blocks make up the SAJ CHS3 C&I hybrid solution.

  • CH3-125K-T8 hybrid inverter: 125 kW, 3/N/PE 380/400 V, DC-coupled PV input up to 250 kWp, built-in EMS and STS
  • CB3-L261 battery cabinet: 261 kWh LFP, 314 Ah cells, 0.5P, liquid-cooled
  • Delivered as separate cabinets: inverter (1027 x 895 x 342 mm, 135 kg) and battery cabinet (1030 x 2300 x 1400 mm, ≤2400 kg)
  • Plan crane/forklift access and foundations for the battery cabinet

The system scales along three axes: duration, off-grid capacity, and on-grid capacity.

  • Duration: up to 4 CB3-L261 cabinets connect to one CH3 inverter, covering storage durations from 2 hours (261 kWh at 125 kW) to 8 hours
  • Off-grid capacity: up to 10 units can run in off-grid parallel with no external STS module, thanks to the integrated static transfer switch
  • On-grid capacity: up to 20 grid-connected units can be expanded in parallel over the 100 Mbps Ethernet backbone
  • SAJ's CB3 battery platform is promoted as scalable to 1.25 MW / 10.4 MWh at the top end of its configuration range

The integrated STS transfers loads to backup in ≤20 ms, and a diesel generator can be hybridized with the system.

  • SAJ promotes the ≤20 ms transfer as uninterrupted operation for production and IT loads
  • Backup output: full 125 kW with 1.1x continuous / 1.55x-for-1 s overload headroom for motor starting
  • Dedicated generator input (max. 125 kW on the EU version): in generator-storage hybrid mode, SAJ's AI optimizes genset start/stop and output against load and PV data, which SAJ quantifies as 20-30% lower fuel consumption by avoiding no-load runs and frequent restarts
  • Supported operating modes: grid-tied, off-grid, generator-storage hybrid and backup

Operation & warranty 1

Warranty

The CH3 EU datasheet states a 5/10-year warranty structure for the inverter (preliminary, confirm the split and any extension options in SAJ's warranty policy), and SAJ promotes a 10-year cell warranty on the CB3 battery platform with 95% DoD on the modular CB3 line.

O&M tooling

  • Built-in EMS with AI features: one-click AI diagnosis, AI Saving, smart AI thermal control that trims cooling energy, and "AI Active O&M / SAJ AI Care" with AI physical examination and efficiency recommendations
  • For fleet-level control and dispatch across multiple units, SAJ's eManager-C1 Pro C&I controller is the companion device
Next step

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Loads, tariff, site constraints - our engineers reply with a compatibility check and a sizing recommendation.

Contact project support

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