What Are Wire Ferrules?

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A ferrule is a type of metal object used for such tasks as reinforcement, joining or fastening. Ferrules typically take the form of a circular, narrow ring of metal, and in the case of wire ferrules, may be used for a single type of crimping application.

Function

  • A wire ferrule is a connector device specifically used to terminate stranded wires. Wire ferrules crimp to the wire via crimping devices, such as compression, pneumatic or ratchet tools, which turn the stranded wire into a solid wire.

Types

  • Wire ferrules are offered with plastic insulation that accommodates two wires; this is called a twin wire ferrule. Single insulated wire ferrules provide plastic insulation for one wire, and uninsulated wire ferrules provide no wire insulation. Wire ferrules may also come in spools or strips, which can be used with multifunction or automatic crimping devices and machines.

Benefits

  • Wire ferrules help provide reliable electrical connections, allowing you to crimp and fasten wire strands in such a way that they conduct current. Wire ferrules prevent unwanted contacts, since the ferrules eliminate any possibility that wire strands may come into contact with another termination. Wire ferrules also help prevent the spreading and fraying of wire strands.

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References

  • "Newnes Industrial Control Wiring Guide"; Bob Mercer; 2001
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Resources

  • "Ultimate Guide: Wiring"; Editors of Creative Homeowner; 2010

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