With advanced material technology added to the existing product, the Tri-Onic TR and TRS current limiting time delay fuses are engineered for overcurrent protection of motors and transformers, service entrance equipment, feeder and branch circuits. Tri-Onic fuses proven time-delay characteristic safely handles harmless starting currents and inrush currents associated with todays motors and transformers. Now available with optional SmartSpot blown fuse indication technology.