Protection Relays & Systems are in stock at Tenco Electronics. A protection relay is a smart device that receives inputs, compares them to set points, and provides outputs. Inputs can be current, voltage, resistance, or temperature. Outputs can include visual feedback in the form of indicator lights and/or an alphanumeric display, communications, control warnings, alarms, and turning power off and on.Tenco offers inventory, pricing, & datasheets for Protection Relays & Systems. To know more, please view our large section of Protection Relays & Systems below.