Fuse Tri-Onic® 250V 30A Time-Delay Class RK5 TR Series Smart-Spot

The Tri-Onic TR-R fuse is a current-limiting, time-delay fuse designed for overcurrent protection in motor circuits, mains, feeders, branch circuits, transformers, and service entrance equipment. Engineered to safely handle starting currents and inrush currents common with motors and transformers, this fuse is suitable for electrical distributors and switchgear suppliers seeking reliable protection solutions. Its design supports both AC and DC applications, providing robust performance in a variety of industrial and general-purpose electrical systems.

Specifications

• Amperage Rating: 30 A
• Voltage Rating: 250 V AC/DC
• Interrupt Rating: 200 kA
• Frequency: 50 hertz
• Fuse Class: Class RK5
• Dimensions (L x W x H): 2 in x 0.56 in x 0.56 in
• Diameter: 0.56 inches
• Mounting Type: Clip
• Connection: Ferrule
• Insulation Material: PolyTube
• Product Weight: 0.0370 lbs
• Manufacturer Part #: TR30RID
• Manufacturer: Mersen

Features

• Time-delay characteristic for motor start-ups and transformer inrush currents without nuisance opening
• Current-limiting design for low peak let-thru current
• Optional SmartSpot solid-state blown fuse indicator for visual fuse status
• Rejection-style design to prevent replacement errors when used with recommended fuse blocks
• Easy-to-read label for quick brand recognition and replacement
• Metal-embossed date and catalog number for traceability and lasting identification
• Fiberglass body for dimensional stability in harsh industrial environments
• High-grade silica filler ensures fast arc quenching and high current limitation

Downloads & Links

• Curves 2
• Spec Sheet
• Drawings
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