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Product Attributes

Introduction

Tri-Onic® TR and TRS time-delay fuses employ advanced material technology for overcurrent protection of motors and transformers, service entrance equipment, feeders, and branch circuits. Their proven time-delay characteristics safely handle harmless inrush and surge currents associated with today's motors and transformers. SmartSpot® blown fuse indication technology is now available as an option. TR — Voltage rating: 250VAC; 250VDC (0.1–2.8A; 35–400A); 160VDC (3–30A; 450–600A), current range: 1/10 to 600A. TRS — Voltage rating: 600VAC; 600VDC (0.1–12A; 70–600A); 300VDC (15–60A), current range: 1/10 to 600A.

Features

• Time-delay current-limiting, suitable for AC and DC
• Optional solid-state SmartSpot blown fuse indicator
• Time-delay for motor starting and transformer inrush currents, no nuisance tripping
• Current-limiting, low peak let-through current
• Rejection feature prevents incorrect replacement (when used with recommended fuse holders)
• Easy-to-read label for quick brand identification and replacement
• Metal-stamped date and catalog number for traceability and permanent identification
• Fiberglass body for dimensional stability in harsh industrial environments
• Premium silica filler for fast arc extinction and high current limitation

Applications

• Motor circuits
• Power mains
• Feeders
• Branch circuits
• Transformers