Reliable connections in your machines and systems are the be-all and end-all. A connection with a faulty contact can cause downtimes that will ultimately cost you time and money. That is why the requirements of each and every connection have to be heeded.
Connections that use the screw system provide the most reliable contact because the screw squeezes the material of your crimped conductor into the connection. However, installing screw connections is very time-consuming, as the screw for each contact needs to be tightened individually.
“PUSH IN“-connections certainly save time during installation, but you need to consider the following: if the crimped conductor is not inserted correctly at the contact point, a secure connection will not be guaranteed. The square and hexagonal crimp shapes of the PZ 10 HEX and PZ 10 SQR also let you create secure connections with spring-based connectors. The parallel-opposite surfaces of the crimp provide enough space for a secure contact – no matter how you insert the conductor into the contact point.
Crimping wire-end ferrules – the devil is in the detail
There is more to reliable contacts than the crimp shape and connection type. The quality of the crimp also plays a major role. Depending on the cross-section, about 0 to 0.5 mm of the conductor should protrude from the ferrule tube. Individual wires should also not be pushed back or protrude from the collar. The ferrule sleeve must be completely filled by the conductor, otherwise the rated cross-section of the conductor will sometimes be impaired. Weidmüller solves this problem with spring-loaded crimping tools, such as the new PZ 10 HEX and PZ 10 SQR. The great advantage of these tools is a self-adjusting crimping die, which automatically adjusts to the respective cross-section.
Trapezoidal crimp shape
stripax® plus 2.5
Hexagonal crimp shape
PZ 10 HEX
Square crimp shape
PZ 10 SQR
Trapezoidal indentation crimp shape
PZ 6 Roto L