Product questions? We’re happy to help! Find your local Murrelektronik Representative.

Cut Clamp

Product Overview



Cut Clamp

The cut clamp technologyis a technique to make conductive connections in electric technology. For this type of connection technology soldering, screwing or skinning is not required. The cut clamp technology therefore is known as LSA Technology and allows a free cut clamp assignment. Another cut clamp technology is IDC (Insulation Displacement Connector) or IDT (Insulation Displacement Termination).

Application of Cut Clamp Technology - Cut Clamp Assignment

At first a piece of the cable coat is taken off. The cable cores are inserted into the assigned cut clamp, positioned with the punch down tool (PDT) and pressed into the cut clamp. The cut clamp assignment may equal the intended application. Afterwards the cores are cut off close to the cut clamp.

Advantages of the Cut Clamp Technology

A great advantage of this practice is the quick manual process of connecting the cores. Another important advantage of the connection are gas tightness and corrosion resistance which are the result of the big contact surface in between conductor and cut clamp as well as the high contact pressure. The cut clamp technology is well known for many years and has been standardized. It has many advantages over other established connection technologies such as crimping. Since skinning ahead of inserting into the cut clamp is no longer necessary, the effort required during installation of lines and plugs in the field is much easier and can be done with simple tools. The cut clamp assignment may be individually set up for the required connections.

Good Contact Transitions in Cut Clamp Technology

One of the most important criteria for the rating of a connection technology is the quality of the contact transition. This quality is shown in the contact resistance. The contact resistance is determined by two factors. The constriction resistance shows how uneven the contact surface which causes them to only touch in selective areas. The effectiveness of the contact surface in between core and cut clamp is determined by the roughness of the touching surfaces. Oxide layers on the contact surface are the second part of the resistance share which is called the impurity film resistance. This can be reduced by adding layers of gold silver or other materials. The intensive contact pf the cut surfaces on the cut clamp and the cable core lowers these types of resistance. It can be disconnected. A cut clamp assignment can be changed afterwards. There are many electric and mechanic influences which determine the quality and reliability of the connection between cut clamp and core. These are systematically researched by manufacturers and used for improvements.

Plug Connectors for Cut Clamp Technology

The cut clamp technology is used in many plug connectors to allow the user to quickly and reliably create durable connections. M8, M12 and 7/8 " plug connectors for the connection of cables with cut clamp technology are available. Plugs with a cut clamp which can be individually set up by a user for PROFIBUS and AS-Interface are available for all cables. In addition to cut clamps LSA modules for different sorts of application are available. Available are plug in modules, connection modules, switch modules and ground wire modules which have a cut clamp on each connection.