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Here is the latest installment of our Weidmuller Terminal block product information newsletter.
Specialty Control Systems Wire Ferrules- Cord End Terminals
Wire Ferrules Selection
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Plain, barrel-shaped, tin-plated wire-end ferrules |
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A wire-end ferrule with a plastic collar. The collar provides personnel protection and insures the ferrule is not inserted too far into the terminal block |
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For use with two wires that must be inserted into a single terminal block |
Wire Ferrules – Product Information
Wire ferrules are also called several other names such as wire-end ferrules or cord end terminals. Wire ferrules are used to prevent fraying when using stranded wire. Wire ferrules are cylindrically shaped terminals made of plated copper. They are slipped over the stripped wire and then permanently crimped into place.
Uses for Wire-end Ferrules
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When using stranded wire a single strand of the wire (or a “hair” or a “whisker”) occasionally becomes separated from the rest of the wire during the installation process. This loose strand can cause intermittent failure of the electrical system. Intermittent failures are much more difficult and expensive to isolate and repair than other types of failures. For this reason many designers are requiring the use of wire ferrules to eliminate this potential cause of failure. In addition, wire ferrules are ideally suited for applications where the wire may be inserted and removed numerous times. |
Wire ferrules are available in three types: 1) uninsulated ferrules (bare); 2) insulated ferrules (a wire ferrule with a plastic collar); or 3) dual-wire ferrules (or twin-wire ferrules). Dual wire ferrules are used to install (or jumper) two wires in a single termination.
Wire-end ferrules are available loose (shipped in bags) or in strips. Ferrule strips are used in automatic crimping tools such as the Weidmuller Stripax Plus. This tool quickly and conveniently cuts the wire, strips the wire, and crimps a ferrule onto the end of the wire.
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