Single Phase

Littelfuse offers a variety of single-phase voltage monitoring relays that are designed to protect industrial equipment when voltage changes occur outside safe levels. These single-phase voltage monitors provide highly accurate and precise voltage measurements that activate a response to abnormal operating conditions in order to prevent harmful damage to equipment. The single-phase product portfolio includes six different series of voltage monitoring relays for detecting issues related to under- and over-voltage conditions. Find the Littelfuse single-phase voltage monitoring relay that is right for you.