Tri-Onic TR-R current-limiting time-delay fuses are engineered for overcurrent protection of motors, transformers, service entrance equipment, feeders and branch-circuits. The time-delay characteristics of the TR-R safely handle harmless starting currents and inrush currents associated with today's motors and transformers.
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Optional Solid-State SmartSpot Indicator Time-Delay for Motor Start-Ups and Transformer Inrush Currents without Nuisance Opening Current-Limiting for Low Peak Let-Thru Current Rejection-Style Design Prevents Replacement Errors (When Used with Recommended Fuse Block)