User Documentation

Weidmüller t Technical information

Lars Brakemeier, January 2020, Page: 1/3

Weidmüller Interface GmbH & Co. KG | Klingenbergstraße 18 | D-32758 Detmold

Application area of wire end ferrules with plastic collar

Dear ladies and gentleman,

the purpose of this technical information is to inform about the intended use of wire end ferrules with

plastic collar.

Wire end ferrules with plastic collar offer additional ease of insertion due to the conical shape that is

integrated in the inner diameter of the collar. Additionally, avoids that the rough insulation edges of the

conductor getting caught when connecting at the clamping point. The different color codes offer a visual

aid for cross-section identification.

The requirements for wire end ferrules are defined in DIN 46228. Therefore, this standard is decisive for

basic conditions and key parameters.

Contrary to the common opinion the plastic collar of the wire end ferrule does not offer kink protection,

unlike insulated cable lugs. Neither is the plastic collar of the ferrule a mechanical insulation support and

therefore should not be stressed by excessive pulling or bending. Additionally to this, during the

assembly, all relevant standards must always be complied with. According to DIN VDE 0298-300

conductors must only be installed in certain bending radius. For instance a PVC insulated wire with

conductor diameter ≤ 20 mm should have a bend radius of no less than 6 times that of the conductor

diameter. In practice this means that no significant pull should stress the plastic collar of the wire end

ferrule!

Img. 1: exemplary description for clarification of bending radius

Example calculation a 2.5mm² (AWG20), according to installation method, has a recommended bend

radius of 6D. With a conductor diameter of 2.57mm this leads to: 6D = 6 x 2,57mm = 15,4 mm

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Weidmüller t Technical information Lars Brakemeier, January 2020, Page: 1/3 Application area of wire end ferrules with plastic collar Dear ladies and gentleman, the purpose of this technical information is to inform about the intended use of wire end ferrules with plastic collar. Wire end ferrules with plastic collar offer additional ease of insertion due to the conical shape that is integrated in the inner diameter of the collar.
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Weidmüller t Technical information Lars Brakemeier, January 2020, Page: 2/3 In order to create an optimal crimped connection the standard DIN 46228 recommends to use tools and contacts of the same supplier (e.g. Weidmüller). Only by doing this can a constantly high processing quality be guaranteed. Weidmüller offers a matching product portfolio that enables you to process conductors from an electrical and a mechanical point of view providing safe, long-lasting and reliable connections.
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Weidmüller t Technical information Lars Brakemeier, January 2020, Page: 3/3 Technical Data Sheet for Weidmüller Wire end ferrules with plastic collar The Materials of the wire ferrules manufactured by Weidmüller Interface GmbH & Co. KG, can be described as follows: • Production: „Made in Germany“ • Hazardous Substances: The materials used for production are classified as not noxious. • Materials: Insulating Collar Copper Tube Polypropylene-fluoropolymer (UL-File No.