Four MPPT
Four trackers with a 200–1000V operating range.
50–80kW Three-Phase On-Grid String Inverter
BSM50-80K-B
Four-MPPT string inverter with up to 1100V DC input, 98.6% maximum efficiency and IP66 enclosure protection.
50–80kWRated AC output4 MPPTIndependent trackers98.6%Maximum efficiency
Inverter overview
Four-MPPT Conversion for Three-Phase PV
The BSM50-80K-B series converts solar DC power to 400V three-phase AC. Select BSM50K-B, BSM60K-B, BSM70K-B or BSM80K-B for nominal outputs of 50, 60, 70 or 80kW.
Four MPPT trackers operate over a 200–1000V range, with 1100V maximum DC input. An IP66 enclosure, fan cooling and LCD display support operation and commissioning.
High Conversion Efficiency
Up to 98.6% maximum efficiency; see individual model ratings.
Grid Protection
Anti-islanding, reverse polarity and overcurrent protection.
Communication
RS485 with optional Wi-Fi / 4G plug.
System integration
Build a Complete On-Grid Solar System
Explore the matching system series for PV modules, mounting and electrical accessories.
Complete On-Grid Solar System
BSM50-80KW-ONPV modules, mounting and site-specific electrical accessoriesExplore On-Grid Solar System →AC Connection
400V three-phase · 3L+N+PE
PV Inputs
Four independent MPPT trackers
Monitoring
RS485 · optional Wi-Fi / 4G
View Inverter Scope +
- Model range · 4 variants
- BSM50K-B / BSM60K-B / BSM70K-B / BSM80K-B
- Nominal grid voltage · 400V
- 3L+N+PE
- Battery connection · None
- PV on-grid string inverter
Technical specifications
Compare the Four Inverter Models
Select an output rating to view model-specific data. Common specifications apply to the inverter series.
- Inverter model
- BSM50K-B
- Nominal AC output
- 50000W
- Maximum AC output
- 55000VA
- Maximum output current
- 79.7A
- Nominal AC voltage
- 400V 3L+N+PE
- MPPT trackers
- 4
- Strings per MPPT
- 2
- Maximum input current per MPPT
- 32A
- Maximum short-circuit current per MPPT
- 48A
- Maximum efficiency
- 98.5%
- Euro efficiency
- 98.2%
- Weight
- 51kg
- Inverter model
- BSM60K-B
- Nominal AC output
- 60000W
- Maximum AC output
- 66000VA
- Maximum output current
- 95.6A
- Nominal AC voltage
- 400V 3L+N+PE
- MPPT trackers
- 4
- Strings per MPPT
- 2
- Maximum input current per MPPT
- 32A
- Maximum short-circuit current per MPPT
- 48A
- Maximum efficiency
- 98.5%
- Euro efficiency
- 98.2%
- Weight
- 51kg
- Inverter model
- BSM70K-B
- Nominal AC output
- 70000W
- Maximum AC output
- 77000VA
- Maximum output current
- 111.6A
- Nominal AC voltage
- 400V 3L+N+PE
- MPPT trackers
- 4
- Strings per MPPT
- 3
- Maximum input current per MPPT
- 45A
- Maximum short-circuit current per MPPT
- 60A
- Maximum efficiency
- 98.6%
- Euro efficiency
- 98.3%
- Weight
- 55kg
- Inverter model
- BSM80K-B
- Nominal AC output
- 80000W
- Maximum AC output
- 88000VA
- Maximum output current
- 127.5A
- Nominal AC voltage
- 400V 3L+N+PE
- MPPT trackers
- 4
- Strings per MPPT
- 3
- Maximum input current per MPPT
- 45A
- Maximum short-circuit current per MPPT
- 60A
- Maximum efficiency
- 98.6%
- Euro efficiency
- 98.3%
- Weight
- 55kg
- Maximum DC voltage
- 1100V
- Nominal DC voltage
- 650V
- Start voltage
- 180V
- MPPT voltage range
- 200–1000V
- Grid frequency
- 50 / 60Hz (±5Hz)
- Power factor
- 0.8 leading to 0.8 lagging
- THDi
- 3%
- Dimensions (W × H × D)
- 515 × 585 × 287mm
- Operating temperature
- −25 to +60°C
- Cooling
- Fan cooling
- Maximum altitude
- 4000m
- Humidity
- 0–100%, non-condensing
- Topology
- Transformerless
- Enclosure protection
- IP66 (inverter)
- Communication
- RS485 / Wi-Fi / 4G
- Display
- LCD
- Surge protection
- DC / AC Type II
- Anti-islanding protection
- Yes
- DC switch
- Yes
- AC output terminal
- OT terminal
Product resources
Inverter Datasheet
Original BSM50-80K-B catalog spread, including features and specifications for the 50, 60, 70 and 80kW inverter models.
Product FAQ
Your questions, answered.
PV input, model selection and product integration.
How do the four models differ?+
Nominal AC output is 50, 60, 70 or 80kW. PV input current, string count, efficiency and weight vary by model; see the model tabs.
What are the PV input limits?+
Maximum DC voltage is 1100V, start voltage is 180V and the MPPT operating range is 200–1000V. Current limits vary by model.
What protection rating does the inverter have?+
The inverter enclosure is rated IP66. The operating temperature range is −25 to +60°C.
Does this inverter have a battery input?+
No. This model is a PV on-grid string inverter, without a battery connection.
Can I order a complete PV system?+
Yes. Open the linked BSM50-80KW-ON system page for project-specific PV module, mounting and accessory selection.
Product inquiry
Select Your Three-Phase String Inverter
Tell us your required AC rating, PV string design, grid voltage and monitoring needs.
50–80kW Three-Phase On-Grid String Inverter
Model: BSM50-80K-B Category: Solar Inverter