Two System Sizes
125kW with one inverter or 250kW with two inverters.
125 / 250kW On-Grid Solar System
BSM125KW-ON
Grid-connected solar systems with one or two BSM125K-B inverters for 125kW or 250kW total AC output.
125 / 250kWSystem AC output1 / 2 units125kW invertersIP66Inverter protection
System overview
125kW and 250kW Solar Power for Commercial Sites
BSM125KW-ON offers two system configurations: one BSM125K-B inverter for 125kW AC output, or two BSM125K-B inverters for 250kW total AC output.
PV modules, string sizing, mounting, AC distribution and grid connection are selected for the site. The system has no battery connection; the 250kW configuration requires coordinated electrical design and grid approval.
Eight MPPT per Inverter
Independent tracking for the project PV array.
Outdoor Inverters
IP66 protection for each inverter enclosure.
Project Configuration
PV array, mounting and electrical accessories selected for the site.
System configuration
Configure Your On-Grid System
PV modules, inverter and site-specific electrical accessories.
Solar Modules
Project-selected PV arrayModule power and quantity to suit the design
On-Grid Inverter
BSM125K-B1 × 125kW / 2 × 125kWView Inverter Specifications →Grid Connection
230V / 400V three-phaseThree-phase AC connectionMounting
Roof / ground, project-selected
Electrical Accessories
Cabling and protection sized for the site
Monitoring
Optional Wi-Fi / 4G plug
View Configuration Scope +
- Solar modules · Project-specific
- Power, quantity and strings selected to inverter limits
- On-grid inverter · 1 or 2 units
- BSM125K-B · 125kW per unit
- Mounting · Project-specific
- Roof or ground mounting
- Cables and connectors · Project-specific
- DC and AC electrical design
- Monitoring · Optional
- Wi-Fi / 4G plug
Technical specifications
Technical Specifications
Inverter ratings below apply to each BSM125K-B unit.
- System model
- BSM125KW-ON
- 125kW configuration
- 1 × BSM125K-B
- 250kW configuration
- 2 × BSM125K-B
- AC rating per inverter
- 125kW
- PV array and accessories
- Project-specific
- Battery connection
- None
- Inverter model
- BSM125K-B
- Nominal AC output
- 125kW
- Maximum apparent output
- 125kVA
- Nominal AC voltage
- 230V/400V, 3W+PE, 3W+N+PE
- Maximum output current
- 181.2A
- Grid frequency
- 50 / 60Hz (±5Hz)
- Power factor
- 0.8 leading to 0.8 lagging
- THDi
- <3% at nominal power
- Maximum efficiency
- 98.7%
- Euro efficiency
- 98.3%
- Maximum DC voltage
- 1100V
- Nominal DC voltage
- 650V
- Start voltage
- 350V
- MPPT voltage range
- 200–1000V
- MPPT trackers
- 8
- Strings per MPPT
- 2
- Maximum input current per MPPT
- 40A
- Maximum short-circuit current per MPPT
- 60A
- Dimensions (W × H × D)
- 965 × 700 × 355mm
- Weight
- 85kg
- Operating temperature
- -30 to +60°C
- Cooling
- Fan cooling
- Maximum altitude
- 5000m; derating above 4000m
- Humidity
- 0–100%
- Enclosure protection
- IP66
- Noise
- ≤75dB
- Topology
- Transformerless
- Communication
- RS485 / PLC / Wi-Fi / 4G
- Display
- LED, Bluetooth + app
- DC switch
- Yes
- Anti-islanding protection
- Yes
- Output overcurrent protection
- Yes
- DC reverse polarity protection
- Yes
- String fault detection
- Optional
- DC / AC surge protection
- Type II
- AC short circuit protection
- Yes
- AFCI
- Optional
- Night SVG
- Optional
- PID recovery
- Optional
- Insulation detection
- Yes
- Residual current monitoring
- Yes
Product resources
Inverter Datasheet
Original BSM125K-B inverter catalog spread, including PV input, AC output, protection and general specifications.
Product FAQ
Your questions, answered.
System scope and inverter options.
What is the difference between 125kW and 250kW?+
The 125kW configuration uses one BSM125K-B inverter. The 250kW configuration uses two, for 250kW total nominal AC output.
Is 250kW a single inverter rating?+
No. Each BSM125K-B is rated at 125kW; 250kW refers to the combined system AC rating.
Is battery storage included?+
No. This is a grid-connected PV system without a battery connection.
How many solar modules are supplied?+
Module power, quantity and string configuration are selected for the project and inverter input limits.
What does the PDF cover?+
The downloadable PDF contains the original BSM125K-B inverter specifications, not a complete system bill of materials.
Product inquiry
Plan Your On-Grid Solar System
Tell us your site location, required AC power, grid voltage and available solar installation area.
125 / 250kW Three-Phase On-Grid Solar System
Model: BSM125KW-ON Category: Solar Power System