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INS PP OLD DIN FERRULE No14 2.5MM2
Manufacturer Resources
Product Specs
- Country Of Origin:
- Germany (DE)
- Product Subgroup:
- Ferrules
- Product Type:
- Polypropylene Insulated Ferrule
- Standards:
- UL E489056
- Wire Size:
- 14 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Grey
- Product Material:
- Copper
Sta-Kon F4028 – Frequently Asked Questions
1) What wire size does the Sta-Kon F4028 ferrule take?
The F4028 wire ferrule is sized for 14 AWG conductor, which is the 2.5 mm2 metric equivalent called out in the part description. Strand count doesn't matter as long as the stripped bundle fits the barrel, so it works on stranded building wire and on fine-strand flexible control cable at that gauge.
2) Is the Sta-Kon F4028 ferrule UL recognized?
Yes. The ferrule carries UL file E489056. If your panel build is being inspected to a UL listing, that file reference is what a plan reviewer or AHJ will want on the submittal for the terminations.
3) What is the barrel made of on an insulated wire ferrule like the F4028?
Copper barrel with a polypropylene insulating collar. Copper is what lets the barrel cold-form around the strands under a crimp without cracking, and the PP sleeve covers the strip length so no bare copper sits outside the terminal block jaw.
4) Why use a ferrule instead of just landing bare stranded wire in a terminal block?
A ferrule bundles the strands into a solid pin, so nothing frays out beside the clamp and the screw pressure doesn't shear individual strands over time. On fine-strand control wire it's often required rather than optional. The F4028 is the 14 AWG / 2.5 mm2 size, with a polypropylene collar that keeps the stripped section insulated right up to the barrel.
5) Do I need a special crimper for the F4028 ferrule?
Yes, insulated ferrules need a four-indent or hex ferrule crimper sized for the gauge, not a standard insulated-terminal plier. The F4028 is a 14 AWG / 2.5 mm2 ferrule, so set the tool to the 2.5 mm2 die position. A square or hex crimp is what gives the pin its shape for the terminal block.
6) Where is the Sta-Kon F4028 ferrule made?
Germany. For federal or institutional procurement that runs a country-of-origin check on submittals, the F4028 reports as DE.
How fast can I get the Sta-Kon F4028 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sta-Kon F4028 come with a warranty?
Absolutely. The Sta-Kon F4028 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sta-Kon F4028?
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