diff --git a/charger/openwb-2.0.go b/charger/openwb-2.0.go
index 961d7b7e9..676ffddce 100644
--- a/charger/openwb-2.0.go
+++ b/charger/openwb-2.0.go
@@ -40,12 +40,13 @@ func init() {
 
 // https://openwb.de/main/wp-content/uploads/2023/10/ModbusTCP-openWB-series2-Pro-1.pdf
 
-//go:generate decorate -f decorateOpenWB20 -b *OpenWB20 -r api.Charger -t "api.Identifier,Identify,func() (string, error)"
+//go:generate decorate -f decorateOpenWB20 -b *OpenWB20 -r api.Charger -t "api.PhaseSwitcher,Phases1p3p,func(int) error" -t "api.Identifier,Identify,func() (string, error)"
 
 // NewOpenWB20FromConfig creates a OpenWB20 charger from generic config
 func NewOpenWB20FromConfig(other map[string]interface{}) (api.Charger, error) {
 	cc := struct {
 		Connector          uint16
+		Phases1p3p         bool
 		modbus.TcpSettings `mapstructure:",squash"`
 	}{
 		Connector: 1,
@@ -63,12 +64,17 @@ func NewOpenWB20FromConfig(other map[string]interface{}) (api.Charger, error) {
 		return nil, err
 	}
 
+	var phases1p3p func(int) error
+	if cc.Phases1p3p {
+		phases1p3p = wb.phases1p3p
+	}
+
 	var identify func() (string, error)
 	if _, err := wb.identify(); err == nil {
 		identify = wb.identify
 	}
 
-	return decorateOpenWB20(wb, identify), nil
+	return decorateOpenWB20(wb, phases1p3p, identify), nil
 }
 
 // NewOpenWB20 creates OpenWB20 charger
@@ -201,10 +207,8 @@ func (wb *OpenWB20) Voltages() (float64, float64, float64, error) {
 	return wb.getPhaseValues(wb.base + openwbRegVoltages)
 }
 
-var _ api.PhaseSwitcher = (*OpenWB20)(nil)
-
-// Phases1p3p implements the api.PhaseSwitcher interface
-func (wb *OpenWB20) Phases1p3p(phases int) error {
+// phases1p3p implements the api.PhaseSwitcher interface
+func (wb *OpenWB20) phases1p3p(phases int) error {
 	if _, err := wb.conn.WriteSingleRegister(wb.base+openwbRegPhaseTarget, uint16(phases)); err != nil {
 		return err
 	}
diff --git a/charger/openwb-2.0_decorators.go b/charger/openwb-2.0_decorators.go
index 4887e8dbe..aca203382 100644
--- a/charger/openwb-2.0_decorators.go
+++ b/charger/openwb-2.0_decorators.go
@@ -6,12 +6,23 @@ import (
 	"github.com/evcc-io/evcc/api"
 )
 
-func decorateOpenWB20(base *OpenWB20, identifier func() (string, error)) api.Charger {
+func decorateOpenWB20(base *OpenWB20, phaseSwitcher func(int) error, identifier func() (string, error)) api.Charger {
 	switch {
-	case identifier == nil:
+	case identifier == nil && phaseSwitcher == nil:
 		return base
 
-	case identifier != nil:
+	case identifier == nil && phaseSwitcher != nil:
+		return &struct {
+			*OpenWB20
+			api.PhaseSwitcher
+		}{
+			OpenWB20: base,
+			PhaseSwitcher: &decorateOpenWB20PhaseSwitcherImpl{
+				phaseSwitcher: phaseSwitcher,
+			},
+		}
+
+	case identifier != nil && phaseSwitcher == nil:
 		return &struct {
 			*OpenWB20
 			api.Identifier
@@ -21,6 +32,21 @@ func decorateOpenWB20(base *OpenWB20, identifier func() (string, error)) api.Cha
 				identifier: identifier,
 			},
 		}
+
+	case identifier != nil && phaseSwitcher != nil:
+		return &struct {
+			*OpenWB20
+			api.Identifier
+			api.PhaseSwitcher
+		}{
+			OpenWB20: base,
+			Identifier: &decorateOpenWB20IdentifierImpl{
+				identifier: identifier,
+			},
+			PhaseSwitcher: &decorateOpenWB20PhaseSwitcherImpl{
+				phaseSwitcher: phaseSwitcher,
+			},
+		}
 	}
 
 	return nil
@@ -33,3 +59,11 @@ type decorateOpenWB20IdentifierImpl struct {
 func (impl *decorateOpenWB20IdentifierImpl) Identify() (string, error) {
 	return impl.identifier()
 }
+
+type decorateOpenWB20PhaseSwitcherImpl struct {
+	phaseSwitcher func(int) error
+}
+
+func (impl *decorateOpenWB20PhaseSwitcherImpl) Phases1p3p(p0 int) error {
+	return impl.phaseSwitcher(p0)
+}
diff --git a/templates/definition/charger/openwb-2.0.yaml b/templates/definition/charger/openwb-2.0.yaml
index 16d92abec..0419aa630 100644
--- a/templates/definition/charger/openwb-2.0.yaml
+++ b/templates/definition/charger/openwb-2.0.yaml
@@ -25,7 +25,15 @@ params:
     id: 1
   - name: connector
     default: 1
+  - name: phases1p3p
+    type: bool
+    description:
+      en: Charger is equipped with phase switching feature
+      de: Phasenumschaltung vorhanden
+    advanced: true
+    default: true
 render: |
   type: openwb-2.0
   {{- include "modbus" . }}
   connector: {{ .connector }}
+  phases1p3p: {{ .phases1p3p }}