Ferrules and tabs for terminal protection
A crimp ferrule – also known as a wire ferrule and electrical ferrule – is a soft metal tube that is crimped onto the end of a stripped wire to protect the strands inside a terminal from fraying. Most ferrules are made of copper. A crimp ferrule is typically plated with tin and the size of a ferrule – both its diameter and length – is determined by a specific wire gauge. An electrical ferrule has a flare on one end; this flare collects and bundles individual wire strands as these are placed into the ferrule. The flare is typically covered with a conical plastic cable entry sleeve, which means the flare is not immediately apparent when looking at the ferrule. This plastic sleeve provides a transition between the wire insulation and the ferrule. The plastic sleeve stays intact around the insulation, and unlike a traditional crimp connection, it is not pressed during installation. Most ferrules are color-coded for wire size.
DIN wire ferrules offer easy and reliable connection of flexible leads (0.14 mm2 up to 50.0 mm2) with screw or spring clamps. The individual wire of the script leads are held by the wire ferrule for this specific wire size, crimped with AMP precision tools to form a gas-tight connection. This includes our DIN tubular end sleeves terminated with our transportable stripper crimper machine. Only of the use of wire ferrules provides the high degree of contacts reliability for switching cabinets, control units, function unit and equipment with row clamp or poke-in clamp connectors.
We offer a broad selection of ferrules, pin terminals, wire crimps, shur plugs, and insulation sleeves – along with receptacles, sockets, and tabs – designed for use in a multitude of applications. Unlike uncrimped wire, an electrical crimp ferrule offers a crimped connection. It is engineered to improve wire resistance to oxidation, which helps increase a connection’s longevity and overall reliability. Wire ferrules are often installed with screw type terminal blocks and used most commonly in automotive and industrial technologies.
A crimp terminal pin, also called a wire pin connector, is crimped on the insulation. The pin area often has a smaller diameter than the wire. Crimp pins and tabs have the same function as the ferrule, except the wire is crimped in a wire barrel instead of the ferrule tube. The wire barrel and insulation serve the same function as any other terminal.
