Insulator module for protection of analogical loop short circuit. M700X module includes a insulator circuit that, in case of anomaly detection or loop short circuit, isolate the zone comprised between two insulator modules and protect the rest of the installation to stay operative. It is restored automatically when the anomaly disappeared in the loop. Its recommended to install a M700X each 20 devices. Allows surface mounting with M200SMB or SMB6-V0 box. DIN standard guide through M200E-DIN support or in any other surface with M200PMB support.