Fuse Tri-Onic® 250V 0.5A Time-Delay Class RK5 TR Series – Electrical Protection Fuse

The Fuse Tri-Onic® 250V 0.5A Time-Delay Class RK5 TR Series by Mersen is designed for overcurrent protection in motor circuits, mains, feeders, branch circuits, transformers, and service entrance equipment. This current-limiting time-delay fuse accommodates harmless motor starting currents and transformer inrush currents, ensuring reliable operation in electrical distribution and lighting solutions. It is suitable for use by electrical distributors and switchgear suppliers requiring precise and durable wire and cable protection components.

Specifications

• Manufacturer: Mersen
• Manufacturer Part #: TR1/2R
• Voltage Rating: 250 V AC
• Amperage Rating: 0.5 A
• Fuse Class: Class RK5
• Interrupt Rating: 200 kA
• Frequency: 50 hertz
• Dimensions: Length 2 in, Diameter 0.56 in, Width 0.56 in, Height 0.56 in
• Mounting Type: Clip
• Connection Type: Ferrule
• Insulation Material: PolyTube
• Product Weight: 0.0370 lb

Features

• Time-delay characteristic to handle motor start-ups and transformer inrush currents without nuisance opening
• Current-limiting to reduce peak let-thru current
• Rejection-style design prevents 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 provides dimensional stability in harsh industrial environments
• High-grade silica filler ensures fast arc quenching and high current limitation

Downloads & Links

• Spec Sheet
• Curves
• Drawings