Fuse Tri-Onic® 250V 1A Time-Delay Class RK5 TR Series – Electrical Fuse for Motor Circuit Protection

The Fuse Tri-Onic® 250V 1A 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 safely handles motor starting currents and transformer inrush currents, making it suitable for industrial and general-purpose electrical applications. It is an essential component for electrical distributors and switchgear suppliers focused on reliable lighting solutions and wire and cable protection systems.

Specifications

• Amperage Rating: 1 A
• Voltage Rating: 250 V AC
• Interrupt Rating: 200 kA
• Fuse Class: Class RK5
• Frequency: 50 hertz
• Dimensions: Length 2 in, Diameter 0.56 in, Width 0.56 in, Height 0.56 in
• Mounting Type: Clip
• Connection: Ferrule
• Insulation Material: PolyTube
• Product Weight: 0.0370 lbs
• Manufacturer Part #: TR1R
• Manufacturer: Mersen

Features

• Time-delay characteristic for motor start-ups and transformer inrush currents without nuisance opening
• Current-limiting design reduces peak let-thru current
• Rejection-style design prevents replacement errors when used with recommended fuse blocks
• Easy-to-read label with metal-embossed date and catalog number for traceability and 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