diff --git a/README.md b/README.md
index 7f1715f..1a0c366 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@ The Smart MAIC integration listens for energy data from the device via MQTT prot
 
 Tested with:
 * [Розумний лічильник електроенергії c WiFi D101, однофазний, стандартна версія](https://store.smart-maic.com/ua/p684214708-umnyj-schetchik-elektroenergii.html)
+* [Розумний лічильник електроенергії c WiFi D103, трифазний, розширена версія](https://store.smart-maic.com/ua/p679987290-umnyj-schetchik-elektroenergii.html)
 
 ## Highlights
 
diff --git a/custom_components/smart_maic/config_flow.py b/custom_components/smart_maic/config_flow.py
index 86d772b..6d71497 100644
--- a/custom_components/smart_maic/config_flow.py
+++ b/custom_components/smart_maic/config_flow.py
@@ -45,6 +45,10 @@ async def validate_input(hass: HomeAssistant, data: dict) -> dict[str, Any]:
 
     smart_maic = SmartMaic(data)
     coordinator = SmartMaicCoordinator(smart_maic, hass)
+    config = await coordinator.async_get_config()
+    if not config["serv"]:
+        raise AbortFlow("mqtt_unconfigured")
+
     config = await coordinator.async_set_mqtt_config()
     additional = {
         DEVICE_ID: config["about"][DEVICE_ID]["value"],
diff --git a/custom_components/smart_maic/coordinator.py b/custom_components/smart_maic/coordinator.py
index e4bdd24..419ca44 100644
--- a/custom_components/smart_maic/coordinator.py
+++ b/custom_components/smart_maic/coordinator.py
@@ -28,6 +28,14 @@ def __init__(self, smart_maic: SmartMaic, hass: HomeAssistant) -> None:
             name=DOMAIN,
         )
 
+    def _get_config(self) -> None:
+        """Get Smart MAIC config."""
+        return self._smart_maic.set_mqtt_config()
+
+    async def async_get_config(self) -> None:
+        """Get Smart MAIC config."""
+        return await self.hass.async_add_executor_job(self._get_config)
+
     def _set_mqtt_config(self) -> None:
         """Set Smart MAIC MQTT config."""
         return self._smart_maic.set_mqtt_config()
diff --git a/custom_components/smart_maic/entity.py b/custom_components/smart_maic/entity.py
index a8dbb12..a968a03 100644
--- a/custom_components/smart_maic/entity.py
+++ b/custom_components/smart_maic/entity.py
@@ -57,3 +57,11 @@ def device_info(self) -> DeviceInfo:
             manufacturer="Smart MAIC",
             model=self._entry.data[DEVICE_TYPE],
         )
+
+    @property
+    def name(self) -> str:
+        """Return the name of the entity."""
+        original = super().name
+        key = self.entity_description.key
+        suffix = f" {key[-1]}" if key[-1] in ["1", "2", "3"] else ""
+        return f"{original}{suffix}"
diff --git a/custom_components/smart_maic/number.py b/custom_components/smart_maic/number.py
index 7364130..dc3ddb1 100644
--- a/custom_components/smart_maic/number.py
+++ b/custom_components/smart_maic/number.py
@@ -25,16 +25,27 @@
 from .entity import SmartMaicEntity
 
 
+def phase_descriptions(index="") -> dict[str, NumberEntityDescription]:
+    """Generate entity descriptions for a given phase"""
+    return {
+        f"Wh{index}": NumberEntityDescription(
+            key=f"Wh{index}",
+            translation_key="consumption",
+            device_class=NumberDeviceClass.ENERGY,
+            mode=NumberMode.BOX,
+            native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
+            native_min_value=0,
+            native_max_value=sys.maxsize,
+            entity_registry_enabled_default=False,
+        ),
+    }
+
+
 ENTITY_DESCRIPTIONS: dict[str, NumberEntityDescription] = {
-    "Wh": NumberEntityDescription(
-        key="Wh",
-        translation_key="consumption",
-        device_class=NumberDeviceClass.ENERGY,
-        mode=NumberMode.BOX,
-        native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
-        native_min_value=0,
-        native_max_value=sys.maxsize,
-    ),
+    **phase_descriptions(""),
+    **phase_descriptions("1"),
+    **phase_descriptions("2"),
+    **phase_descriptions("3"),
 }
 
 
diff --git a/custom_components/smart_maic/sensor.py b/custom_components/smart_maic/sensor.py
index 7fbff52..9fd7d3e 100644
--- a/custom_components/smart_maic/sensor.py
+++ b/custom_components/smart_maic/sensor.py
@@ -30,18 +30,91 @@
 from .coordinator import SmartMaicCoordinator
 from .entity import SmartMaicEntity
 
+
+def phase_descriptions(index="") -> dict[str, SensorEntityDescription]:
+    """Generate entity descriptions for a given phase"""
+    return {
+        f"V{index}": SensorEntityDescription(
+            key=f"V{index}",
+            translation_key="voltage",
+            device_class=SensorDeviceClass.VOLTAGE,
+            state_class=SensorStateClass.MEASUREMENT,
+            native_unit_of_measurement=UnitOfElectricPotential.VOLT,
+            suggested_display_precision=2,
+        ),
+        f"A{index}": SensorEntityDescription(
+            key=f"A{index}",
+            translation_key="current",
+            device_class=SensorDeviceClass.CURRENT,
+            state_class=SensorStateClass.MEASUREMENT,
+            native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+            suggested_display_precision=2,
+        ),
+        f"W{index}": SensorEntityDescription(
+            key=f"W{index}",
+            translation_key="power",
+            device_class=SensorDeviceClass.POWER,
+            state_class=SensorStateClass.MEASUREMENT,
+            native_unit_of_measurement=UnitOfPower.WATT,
+            suggested_display_precision=0,
+        ),
+        f"rW{index}": SensorEntityDescription(
+            key=f"rW{index}",
+            translation_key="return_power",
+            device_class=SensorDeviceClass.POWER,
+            state_class=SensorStateClass.MEASUREMENT,
+            native_unit_of_measurement=UnitOfPower.WATT,
+            suggested_display_precision=0,
+            entity_registry_enabled_default=False,
+        ),
+        f"Wh{index}": SensorEntityDescription(
+            key=f"Wh{index}",
+            translation_key="consumption",
+            device_class=SensorDeviceClass.ENERGY,
+            state_class=SensorStateClass.TOTAL_INCREASING,
+            native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
+            suggested_display_precision=0,
+        ),
+        f"rWh{index}": SensorEntityDescription(
+            key=f"rWh{index}",
+            translation_key="return",
+            device_class=SensorDeviceClass.ENERGY,
+            state_class=SensorStateClass.TOTAL,
+            native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
+            suggested_display_precision=0,
+            entity_registry_enabled_default=False,
+        ),
+        f"PF{index}": SensorEntityDescription(
+            key=f"PF{index}",
+            translation_key="power_factor",
+            device_class=SensorDeviceClass.POWER_FACTOR,
+            state_class=SensorStateClass.MEASUREMENT,
+            suggested_display_precision=2,
+        ),
+    }
+
+
 ENTITY_DESCRIPTIONS: dict[str, SensorEntityDescription] = {
-    "V": SensorEntityDescription(
-        key="V",
-        translation_key="voltage",
-        device_class=SensorDeviceClass.VOLTAGE,
+    **phase_descriptions(""),
+    **phase_descriptions("1"),
+    **phase_descriptions("2"),
+    **phase_descriptions("3"),
+    "Temp": SensorEntityDescription(
+        key="Temp",
+        translation_key="device_temperature",
+        device_class=SensorDeviceClass.TEMPERATURE,
         state_class=SensorStateClass.MEASUREMENT,
-        native_unit_of_measurement=UnitOfElectricPotential.VOLT,
-        suggested_display_precision=2,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+        suggested_display_precision=0,
     ),
+}
+
+# NOTE: dict keys here match API response
+# But we align "key" values with single phase for consistency
+TOTAL_ENTITY_DESCRIPTIONS: dict[str, SensorEntityDescription] = {
     "A": SensorEntityDescription(
         key="A",
-        translation_key="current",
+        translation_key="total_current",
         device_class=SensorDeviceClass.CURRENT,
         state_class=SensorStateClass.MEASUREMENT,
         native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
@@ -49,34 +122,37 @@
     ),
     "W": SensorEntityDescription(
         key="W",
-        translation_key="power",
+        translation_key="total_power",
         device_class=SensorDeviceClass.POWER,
         state_class=SensorStateClass.MEASUREMENT,
         native_unit_of_measurement=UnitOfPower.WATT,
         suggested_display_precision=0,
     ),
-    "Wh": SensorEntityDescription(
+    "rW": SensorEntityDescription(
+        key="rW",
+        translation_key="total_return_power",
+        device_class=SensorDeviceClass.POWER,
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=UnitOfPower.WATT,
+        suggested_display_precision=0,
+        entity_registry_enabled_default=False,
+    ),
+    "TWh": SensorEntityDescription(
         key="Wh",
-        translation_key="consumption",
+        translation_key="total_consumption",
         device_class=SensorDeviceClass.ENERGY,
         state_class=SensorStateClass.TOTAL_INCREASING,
         native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
         suggested_display_precision=0,
     ),
-    "PF": SensorEntityDescription(
-        key="PF",
-        translation_key="power_factor",
-        device_class=SensorDeviceClass.POWER_FACTOR,
-        state_class=SensorStateClass.MEASUREMENT,
-        suggested_display_precision=2,
-    ),
-    "Temp": SensorEntityDescription(
-        key="Temp",
-        translation_key="device_temperature",
-        device_class=SensorDeviceClass.TEMPERATURE,
-        state_class=SensorStateClass.MEASUREMENT,
-        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+    "rTWh": SensorEntityDescription(
+        key="rWh",
+        translation_key="total_return",
+        device_class=SensorDeviceClass.ENERGY,
+        state_class=SensorStateClass.TOTAL,
+        native_unit_of_measurement=UnitOfEnergy.WATT_HOUR,
         suggested_display_precision=0,
+        entity_registry_enabled_default=False,
     ),
 }
 
@@ -95,6 +171,16 @@ async def async_setup_entry(
         ]
     )
 
+    # NOTE: check if we're dealing with 3-phase device
+    if coordinator.data.get("A1"):
+        async_add_entities(
+            [
+                SmartMaicTotalSensor(hass, coordinator, entry, description)
+                for ent in TOTAL_ENTITY_DESCRIPTIONS
+                if (description := TOTAL_ENTITY_DESCRIPTIONS.get(ent))
+            ]
+        )
+
 
 class SmartMaicSensor(SmartMaicEntity, SensorEntity):
     """Representation of the Smart MAIC sensor."""
@@ -104,3 +190,15 @@ def native_value(self) -> StateType:
         """Return the state of the sensor."""
         value = self.coordinator.data[self.entity_description.key]
         return cast(StateType, value)
+
+
+class SmartMaicTotalSensor(SmartMaicEntity, SensorEntity):
+    """Representation of the Smart MAIC total sensor."""
+
+    @property
+    def native_value(self) -> StateType:
+        """Return the state of the sensor."""
+        base_key = self.entity_description.key
+        data = self.coordinator.data
+        value = data[f"{base_key}1"] + data[f"{base_key}2"] + data[f"{base_key}3"]
+        return cast(StateType, value)
diff --git a/custom_components/smart_maic/smart_maic.py b/custom_components/smart_maic/smart_maic.py
index 94eb3d2..03e8ce4 100644
--- a/custom_components/smart_maic/smart_maic.py
+++ b/custom_components/smart_maic/smart_maic.py
@@ -49,7 +49,7 @@ def set_mqtt_config(self) -> dict[str, Any]:
             uname=config["uname"],
             **{"pass": config["pass"]},
             mqtt_on=1,
-            mqttint=60,
+            mqttint=5,
             separat=2,
             prefix=f"{PREFIX}/",
         )
diff --git a/custom_components/smart_maic/translations/en.json b/custom_components/smart_maic/translations/en.json
index 8df19c0..e694717 100644
--- a/custom_components/smart_maic/translations/en.json
+++ b/custom_components/smart_maic/translations/en.json
@@ -7,13 +7,14 @@
           "pin": "PIN password",
           "device_name": "Name for the device in HA"
         },
-        "description": "Please set up MQTT host/user/pass on the device before adding this integration"
+        "description": "Please set up MQTT on the device before adding this integration"
       }
     },
     "error": {
       "already_configured": "Device is already configured",
       "already_in_progress": "Device configuration is in progress",
       "mqtt_unavailable": "MQTT is not available",
+      "mqtt_unconfigured": "Please configure MQTT host/port/credentials on the device and retry setup",
       "cannot_connect": "Failed to connect",
       "unknown": "Unknown error"
     }
@@ -34,14 +35,35 @@
       "power": {
         "name": "Power"
       },
+      "return_power": {
+        "name": "Return power"
+      },
       "consumption": {
         "name": "Consumption"
       },
+      "return": {
+        "name": "Return"
+      },
       "power_factor": {
         "name": "Power factor"
       },
       "device_temperature": {
         "name": "Device temperature"
+      },
+      "total_current": {
+        "name": "Total current"
+      },
+      "total_power": {
+        "name": "Total power"
+      },
+      "total_return_power": {
+        "name": "Total return power"
+      },
+      "total_consumption": {
+        "name": "Total consumption"
+      },
+      "total_return": {
+        "name": "Total return"
       }
     },
     "switch": {