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Solis FlexHome-CB50A-H BMS 50A HV controller

€580,80 incl. 21% VAT
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The Solis FlexHome-CB50A-H is the central high-voltage BMS controller for the FlexHome-(15–40)kWh-H energy storage system. This control module manages communication, system protection and charge/discharge control between battery modules and compatible Solis hybrid inverters. With 50A system current, a maximum power of 20 kW and CAN/RS485 integration, it is the mandatory control unit for reliable HV storage.

  • High-voltage BMS controller: 50A charge and discharge control with 75A peak current (10s) and 20 kW max. power.
  • CAN and RS485 communication: Seamless system integration with compatible Solis HV hybrid inverters.
  • Integrated protection: DC breaker, DC overcurrent fuses, fire protection and explosion release valves.
  • Mandatory system component: Required for correct control of all FlexHome-BAT5kWh-H battery modules.
  • Comprehensive certification: IEC 62619, VDE 2510-50, UN 38.3, RoHS and REACH.

Suitable for

  • New FlexHome-(15–40)kWh-H high-voltage home battery installations
  • Installations with compatible Solis HV hybrid inverters (S6-EH3P series)
  • Residential and light-commercial energy storage with scalable capacity from 15 kWh to 40 kWh per stack
  • Systems requiring SOC monitoring, safety logic and controlled charge/discharge operation
  • Installations requiring Time-of-Use optimisation and dynamic energy management

Solis FlexHome-CB50A-H — specifications and benefits

  • Technical control centre: The BMS handles SOC monitoring, system communication, safety logic and controlled charge/discharge operation for all connected FlexHome-BAT5kWh-H modules.
  • Scalable configuration: Combined with FlexHome-BAT5kWh-H modules, system capacity of 15 kWh to 40 kWh per stack is achievable — expandable via parallel connection.
  • Time-of-Use optimisation: Supports dynamic energy management, system efficiency and improved long-term cost-of-ownership for demanding energy markets.
  • Wide inverter compatibility: Validated for S6-EH3P(3–12)K-H, S6-EH3P(12–20)K-H, S6-EH3P(12–20)K-ND-H and S6-EH3P(8–12)K-LV-ND-H.
Property Value
Brand & model SolisStorage FlexHome-CB50A-H
MPN FlexHome-CB50A-H
Type High-voltage control module / BMS
System series FlexHome-(15–40)kWh-H
Max. charge/discharge current 50A
Max. peak current 75A (10s)
Max. charge/discharge power 20 kW
Communication CAN / RS485
Compatible inverters S6-EH3P(3–12)K-H, S6-EH3P(12–20)K-H, S6-EH3P(12–20)K-ND-H, S6-EH3P(8–12)K-LV-ND-H
Protection DC breaker, DC overcurrent fuses, fire protection, explosion release valves
Certifications IEC 62619, IEC 63056, ISO13849, VDE 2510-50, UN 38.3, IEC 61000-6-1/2/3/4, IEC 60730-1, IEC/EN 62477-1:2022, IEC 60529, IEC 62040, RoHS, REACH

Note: The official datasheet is always leading for the correct technical specifications.

Important, correct BMS configuration is critical: Incorrect BMS configuration, unsuitable inverter settings or faulty cabling may cause communication loss, system downtime, efficiency loss or permanent battery module damage. Installation must be carried out exclusively by certified electrical installers.
What is included in the Solis FlexHome-CB50A-H package?
Component Quantity
High-voltage control module 1
Physical base 1
Mounting bracket 2
Expansion screws 2
Product installation screws 2
B+ to PCS power harness, 2m 1
B– to PCS power harness, 2m 1
PCS communication harness, 2m 1
Ground lead, 2m 1
Quick Assembly Manual 1
Product specification 1
Warranty card 1
Packing list 1
Levelling instrument 1
Which Solis inverters are compatible with the FlexHome-CB50A-H?

The FlexHome-CB50A-H is validated for the following Solis HV hybrid inverter series: S6-EH3P(3–12)K-H, S6-EH3P(12–20)K-H, S6-EH3P(12–20)K-ND-H and S6-EH3P(8–12)K-LV-ND-H. Compatibility depends on the exact inverter model and firmware version. Always refer to the most current compatibility list in the datasheet before installation.

Is the FlexHome-CB50A-H mandatory for the FlexHome system?

Yes. The FlexHome-CB50A-H is the mandatory high-voltage control module for the FlexHome-(15–40)kWh-H system. Without this BMS, the FlexHome-BAT5kWh-H battery modules cannot be operated safely. The BMS handles cell balancing, temperature protection, SOC monitoring and communication via CAN/RS485 with the inverter.

How does the FlexHome-CB50A-H support Time-of-Use optimisation?

As time-of-use energy pricing becomes more widespread across Europe, accurate real-time system control is increasingly important for financial optimisation. The FlexHome-CB50A-H provides precise SOC and power data to the inverter, enabling the system to charge the battery during low-tariff periods and discharge during peak-price windows. The actual financial benefit depends on your consumption profile, PV yield, energy contract and applicable grid tariffs.

View more products in our SolisStorage home battery energy storage collection.

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