Manufacturer Name: Littelfuse Product Number: 455 OEM Part Number: 455 Product Description: 3-Phase Line-Load Volt Mon/ 19 Weight:1.12lbs/508.02g The Littelfuse 455 is a three-phase voltage monitor intended primarily to protect motors in HVAC equipment. It makes sure that the motor runs within safe voltage ranges by continuously monitoring the line and lo... https://www.partshnc.com/455-littelfuse-3-phase-line-load-volt-mon-19