Fuse Tri-Onic® 250V 125A Time-Delay Class RK5 TR Series Smart-Spot

Fuse Tri-Onic® 250V 125A Time-Delay Class RK5 TR Series Smart-Spot Fuse The Mersen Fuse Tri-Onic® 250V 125A Time-Delay Class RK5 TR Series Smart-Spot fuse is engineered for overcurrent protection in motor circuits, mains, feeders, branch circuits, transformers, and service entrance equipment. This time-delay fuse is designed to safely handle harmless starting and inrush currents typical in motors and transformers, making it suitable for general-purpose electrical distribution and lighting solutions. It features current-limiting characteristics to reduce peak let-thru current and includes optional SmartSpot blown fuse indication technology for maintenance efficiency. Specifications Amperage Rating: 125 A Voltage Rating: 250 V AC/DC Interrupt Rating: 200 kA Frequency: 50 hertz Fuse Class: Class RK5 Diameter: 1.56 inches Mounting Type: Clip Connection: Blade Insulation Material: PolyTube Product Weight: 0.5 lb Features Time-delay design for motor start-ups and transformer inrush currents without nuisance opening Current-limiting for low peak let-thru current Optional solid-state SmartSpot blown fuse indicator for visual fault detection 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 settings High-grade silica filler ensures fast arc quenching and high current limitation Downloads & Links Curves 2 Spec Sheet Drawings Curves 1