Sta-Kon F4001 INS PP OLD DIN FERRULE 18AWG .75MM2

The F4001 is sized for 18 AWG conductor, which is the 0.75 mm2 metric equivalent called out in its description. If you are terminating stranded 18 AWG control wire into a terminal block or breaker clamp, this is the matching ferrule. Larger or smaller conductors need a different size in the series, since a ferrule barrel only crimps reliably on the gauge it was made for.

It is the old DIN barrel length, as stated in the part description. That matters because old DIN and new DIN ferrules of the same wire size have different barrel lengths, and a terminal block prepped for one can leave bare conductor exposed or bottom out with the other. If your drawings or existing panel are built around new DIN lengths, order a new DIN ferrule instead of the F4001.

The F4001 uses a polypropylene insulating collar in white over a copper barrel. Polypropylene collars are standard for panel wiring and give you a colour-coded, strain-relieved entry into the crimp. White is the colour code tied to this 0.75 mm2 / 18 AWG size, so if you are standardizing a panel by colour, white is what 18 AWG looks like in this family.

Yes, insulated wire ferrules take a dedicated ferrule crimper, not a standard insulated-terminal plier. The jaws form a square, hex or trapezoid profile that compresses the copper barrel evenly around the strands while leaving the polypropylene collar intact. A ring-terminal style crimper will flatten the collar and give you a loose, high-resistance termination.

A ferrule gathers the strands into a solid copper pin so the screw or spring clamp bears on the barrel rather than on individual strands. That keeps strands from splaying outside the clamp, prevents the cold-flow loosening you get from a screw biting directly into soft stranded copper, and makes the termination re-torqueable. On 18 AWG control wiring in a crowded panel it is also the difference between a clean dress and a stray strand shorting to the next terminal.

Germany. Country of origin is listed as Germany (DE), which is the documentation a procurement buyer needs for domestic-preference or trade-compliance paperwork on a government or institutional order.