diff --git a/internal/resource/default_user_secret.go b/internal/resource/default_user_secret.go
index c744e128f..5c1e1c4d4 100644
--- a/internal/resource/default_user_secret.go
+++ b/internal/resource/default_user_secret.go
@@ -74,6 +74,7 @@ func (builder *DefaultUserSecretBuilder) Build() (client.Object, error) {
 		},
 	}
 	builder.updatePorts(secret)
+	builder.updateConnectionString(secret)
 
 	return secret, nil
 }
@@ -87,6 +88,7 @@ func (builder *DefaultUserSecretBuilder) Update(object client.Object) error {
 	secret.Labels = metadata.GetLabels(builder.Instance.Name, builder.Instance.Labels)
 	secret.Annotations = metadata.ReconcileAndFilterAnnotations(secret.GetAnnotations(), builder.Instance.Annotations)
 	builder.updatePorts(secret)
+	builder.updateConnectionString(secret)
 
 	if err := controllerutil.SetControllerReference(builder.Instance, secret, builder.Scheme); err != nil {
 		return fmt.Errorf("failed setting controller reference: %w", err)
@@ -145,6 +147,14 @@ func (builder *DefaultUserSecretBuilder) updatePorts(secret *corev1.Secret) {
 	}
 }
 
+func (builder *DefaultUserSecretBuilder) updateConnectionString(secret *corev1.Secret) {
+	if builder.Instance.Spec.TLS.SecretName != "" {
+		secret.Data["connection_string"] = []byte(fmt.Sprintf("amqps://%s:%s@%s:%s/", secret.Data["username"], secret.Data["password"], secret.Data["host"], secret.Data["port"]))
+	} else {
+		secret.Data["connection_string"] = []byte(fmt.Sprintf("amqp://%s:%s@%s:%s/", secret.Data["username"], secret.Data["password"], secret.Data["host"], secret.Data["port"]))
+	}
+}
+
 // generateUsername returns a base64 string that has "default_user_" as prefix
 // returned string has length 'l' when base64 decoded
 func generateUsername(l int) (string, error) {
diff --git a/internal/resource/default_user_secret_test.go b/internal/resource/default_user_secret_test.go
index bbf87c02c..2ff71f4c9 100644
--- a/internal/resource/default_user_secret_test.go
+++ b/internal/resource/default_user_secret_test.go
@@ -11,6 +11,8 @@ package resource_test
 
 import (
 	b64 "encoding/base64"
+	"fmt"
+
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
 	rabbitmqv1beta1 "github.com/rabbitmq/cluster-operator/v2/api/v1beta1"
@@ -100,6 +102,16 @@ var _ = Describe("DefaultUserSecret", func() {
 				Expect(port).To(BeEquivalentTo("5672"))
 			})
 
+			By("Setting a connection string", func() {
+				Expect(secret.Data).To(HaveKey("username"), "Failed to find a key \"username\" in the generated Secret")
+				Expect(secret.Data).To(HaveKey("password"), "Failed to find a key \"password\" in the generated Secret")
+				Expect(secret.Data).To(HaveKey("host"), "Failed to find a key \"host\" in the generated Secret")
+				Expect(secret.Data).To(HaveKey("port"), "Failed to find a key \"port\" in the generated Secret")
+
+				expectedConnectionString := []byte(fmt.Sprintf("amqp://%s:%s@%s:%s/", secret.Data["username"], secret.Data["password"], secret.Data["host"], secret.Data["port"]))
+				Expect(secret.Data).To(HaveKeyWithValue("connection_string", expectedConnectionString))
+			})
+
 			By("creating a default_user.conf file that contains the correct sysctl config format to be parsed by RabbitMQ", func() {
 				defaultUserConf, ok := secret.Data["default_user.conf"]
 				Expect(ok).To(BeTrue(), "Failed to find a key \"default_user.conf\" in the generated Secret")
@@ -167,18 +179,18 @@ var _ = Describe("DefaultUserSecret", func() {
 	})
 
 	Context("when TLS is enabled", func() {
-		It("Uses the AMQPS port in the user secret", func() {
-			var port []byte
-
+		It("Uses the AMQPS protocol in the user secret", func() {
 			instance.Spec.TLS.SecretName = "tls-secret"
 
 			obj, err := defaultUserSecretBuilder.Build()
 			Expect(err).NotTo(HaveOccurred())
 			secret = obj.(*corev1.Secret)
 
-			port, ok := secret.Data["port"]
-			Expect(ok).To(BeTrue(), "Failed to find key \"port\" in the generated Secret")
-			Expect(port).To(BeEquivalentTo("5671"))
+			By("Setting the AMQPS port in the user secret")
+			Expect(secret.Data).To(HaveKeyWithValue("port", []byte("5671")))
+
+			By("setting the connection string to use the AMQPS protocol")
+			Expect(secret.Data).To(HaveKeyWithValue("connection_string", MatchRegexp("amqps:.*:5671/")))
 		})
 
 		Context("when MQTT, STOMP, streams, WebMQTT, and WebSTOMP are enabled", func() {
@@ -338,6 +350,8 @@ var _ = Describe("DefaultUserSecret", func() {
 			Expect(ok).To(BeTrue())
 			Expect(port).To(BeEquivalentTo("5671"))
 
+			Expect(secret.Data).To(HaveKeyWithValue("connection_string", MatchRegexp("amqps:.*:5671/")))
+
 			port, ok = secret.Data["mqtt-port"]
 			Expect(ok).To(BeTrue())
 			Expect(port).To(BeEquivalentTo("8883"))