This is a pre-insulated crimp connector used to terminate the ends of stranded electrical wires.
Ferrule: A small metal tube (usually copper or copper alloy) that a stranded wire is inserted into and then crimped. This creates a solid, reliable, and fray-proof end.
Pre-insulated: The ferrule has a colored plastic sleeve (the insulation) already attached to its barrel. This sleeve provides insulation and color coding.
EC-J: This is a specific manufacturer's product series or style. "EC-J" typically refers to a style of ferrule that is double-crimped. This means:
The first crimp secures the metal barrel to the bare wire strands.
The second crimp secures the insulated sleeve to the wire's own insulation, providing excellent strain relief and preventing the wire from pulling out.
Specific Variant: K-Type Black on Red
This describes the color and marking scheme.
K-Type: This usually indicates a ferrule that is designed to be used with a specific type of applicator tool or that has a specific shape. In many systems, "K-Type" refers to the ferrule's compatibility with a funnel-shaped entry at the wire-insertion end, which makes inserting multi-stranded wires much easier.
Black on Red: This describes the physical appearance.
Red: The color of the main plastic insulating sleeve is Red.
Black: The printed numbers or letters on that red sleeve are in Black ink.
The color of the sleeve (Red) often corresponds to the wire size it can accommodate. In the standard color-coding for ferrules:
Red typically accommodates wire sizes from 0.5 mm² to 1.5 mm² (or AWG 20-16). You must check the manufacturer's datasheet for the exact specification.
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