Solis S6-EH3P50K-H

Commercial hybrid inverter

A 50 kW three-phase hybrid inverter with four MPPTs, two high-voltage battery ports and a separate backup output. Local integration depends on the exact communications role and approved protocol documentation.

Solis S6-EH3P50K-H-EU hybrid inverter
  • RS485
  • CAN

Commercial hybrid inverter

Compatibility

External monitoring requires Solis confirmation

Solis documents RS485 hardware and supplies Modbus tables to qualified partners following review of the request and any NDA requirements. The retained documents do not establish a readable server port or current register map for this exact model and firmware. Edge integration has not been verified.

S6-EH3P50K-H under European manual V1.2 dated 21 August 2025, 380/400 V three-phase with neutral. Excludes 30K-H-LV, 21A upgrades, ND/AU variants and larger K10 families. No firmware floor or register mapping has been established.

Models

Download
ModelsInterfaceRoute into Edge
S6-EH3P50K-H, European scope50 kW; four MPPTs; 150–800 V battery rangeExternal monitoring is unverified; Solis must confirm the port role and exact-model protocol.
S6-EH3P30K-H-LV, 21A, ND and AU versionsDifferent voltage/current or regional hardware scopeDo not transfer the specifications, firmware assumptions or register layout from this guide.

Specifications

The global V3.8 datasheet and European V1.2 manual establish a 50 kW commercial hybrid scope. The datasheet distinguishes 100 kW recommended PV array capacity from 96 kW maximum usable PV power; neither is a 100 kW AC output rating.12

AC rating
50 kW, 380/400 V three-phase with neutral2
PV inputs
Four MPPTs, eight strings; 1000 V maximum DC2
PV power
100 kW recommended array; 96 kW maximum usable input2
Battery
Two ports; 150–800 V; 70 A per port in retained V3.8 datasheet2
Backup
50 kW rated; 1.6 times overload for 2 seconds2
Enclosure
IP66; -25 to +60°C; intelligent fan cooling2
Dimensions and weight
530×880×290 mm; 73 kg2
Protocol access
Qualified-partner request; exact firmware/register scope unresolved4

Interface

Documented measurements and integration boundaries for S6-EH3P50K-H.

  • The inverter provides local PV, battery and AC operating information through its screen and supported monitoring arrangement.
  • No measurement register list is published here: exact fields, units, signed direction, data freshness and unavailable-value handling await the approved model-specific protocol.
  • Battery BMS measurements, site meter readings and inverter output are different sources; preserve those identities when designing a monitoring map.

Assessment

European S6-EH3P50K-H documentary selection review; no physical commissioning or approved register map.

InteroperabilityLimited
Documented RS485 interface, but port role and current exact-model protocol must be settled before integration.14
AccuracyNot yet assessed
Exact externally readable measurements and representations are not established without the current map.
SecurityNot yet assessed
The retained sources do not establish authentication, access control or write protection for the proposed external monitoring interface.
ReliabilityNot yet assessed
Recovery and data retention for the proposed external monitoring interface are not established by the retained sources.
RuggednessSupported with conditions
IP66 enclosure with published ambient limits and active cooling supports outdoor electrical installations within those limits.2
ScalabilityNot yet assessed
Concurrent-client and polling-capacity limits are not established by the retained documents.
LifecycleSupported with conditions
Current product page links a dated European manual and datasheet; firmware-specific protocol access remains controlled.134

Setup

  1. Record the exact nameplate code, regional grid configuration and installed firmware.

    The family datasheet covers several ratings; this guide uses the 50 kW column.

  2. Identify existing logger, meter, BMS and parallel-controller connections before planning additional communications.

    Meter and BMS ports remain assigned to their system roles.

  3. The manual identifies RS485A on RJ45 pin 5 and RS485B on pin 4.

    That connector is not an Ethernet connection. Electrical installation remains governed by the exact manual.

  4. Resolve the external port role before attaching a controller.

    The manual describes both an EMS interface and a master-controller use; do not add a second RTU master or assume default address, baud rate or parity.

  5. Obtain the current exact-model read-only protocol through the manufacturer’s qualified-partner process.

    Establish firmware applicability, function codes, addresses, widths, byte order, scaling and unavailable-value rules before polling.

  6. Prepare a bounded read-only monitoring plan and compare fresh readings with the local display and existing meter/BMS.

    No control, export-limit, battery-mode or grid-code writes belong in this workflow.

  7. A logger is a separate integration layer.

    Solis documents that enabling Modbus TCP on S2-WL-ST disconnects that logger from SolisCloud; this is not proof of a native TCP server in this inverter or universal logger compatibility.

Common questions

Does an RJ45 socket provide Modbus TCP?
No. The manual’s optional communications connection is RS485 on pins 5 and 4. A separate logger can provide a TCP path only within its documented configuration; a connector shape is not protocol evidence.15
Why is there no downloadable register map?
The current English service article routes Modbus-table requests through qualified-partner review and possible NDA requirements. The older 2020 hybrid map is not used as evidence for this current model.4
Can any high-voltage battery be connected?
No. Voltage range alone does not establish BMS protocol, battery model or firmware compatibility. The manual assigns a dedicated CAN link to compatible batteries.1

Sources

  1. European S6-EH3P user manual V1.2, August 2025 (opens in a new tab) (PDF) Solis
  2. S6-EH3P global datasheet V3.8 (opens in a new tab) (PDF) Solis
  3. Current S6-EH3P commercial hybrid product page (opens in a new tab) Solis
  4. Current Solis Modbus-table access policy (opens in a new tab) Solis
  5. S2-WL-ST Modbus TCP communication and cloud boundary (opens in a new tab) Solis

Further reading

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