High Current Contacts

Modular principle for different requirements

In contacting tasks with high currents, various requirements are placed on the contacting. A classic contact probe is often no longer sufficient to meet this versatility. Thanks to a high level of expertise and experience, Feinmetall has taken a leading role in all questions of high-current contacting.

Contacting up to 600 A

The new and modular contact block HC01 allows the use in applications up to 600 A continuous current. This contact block was developed in particular for contacting prismatic cells and pouch cells and can be equipped with sense contacts and/or temperature sensors depending on customer requirements.

The contact block contains 41 independently spring-loaded contact probes to achieve multiple contact points and thus maximize the overall current carrying capacity. In addition, a hole in the contact block allows the contact area to be cooled with compressed air if required.

Scratch principle for lowest contact resistances

An important basis for optimal contacting at high currents is an extremely low-resistance electrical contact to the DUT. This is realized by a scratch contacting system developed and protected by Feinmetall, which carries out a defined scratching movement on the contacted surface and thus achieves the best results especially with contaminated or oxidized materials. The scratch solution is especially suitable for contacting battery cells, since in particular the typical aluminum conductors on the cathode side can be contacted reliably. In particular, the occurrence of a fritting effect can thus be avoided. This ensures reproducible good contacting results.

The outstanding results with regard to the current-carrying capacity of our contacts were confirmed by an extensive investigation at the ISEA Institute of RWTH Aachen University. In particular, the high effectiveness of the scratch principle on difficult contact surfaces was confirmed.

Coaxial high current probe up to 300 A

The coaxial high-current probe HC04 was developed especially for contacting during the formation of battery cells, for incoming goods inspection and for end-of-line testing. It also has a modular design and can be supplied with two sense pins, with temperature sensor or compressed air cooling. The modular design of the probe allows optimum use of the limited space available and allows great flexibility for various applications.

Integratable temperature sensors

In many contacting tasks, especially in applications with high currents, the temperature development directly at the contact point plays an important role. However, these contact points often offer little space and they are difficult to access. A spring-loaded contacting unit, in which a temperature sensor is already integrated, offers an optimal solution. However, to achieve this, a spring-loaded temperature sensor must be available that is slim enough to be integrated into a contacting unit.

With the new TS series, Feinmetall offers a suitable solution. The sensor types PT100, PT1000, NTC or type K can be implemented. The spring-loaded temperature sensors have a diameter of only 4.5 mm and can be ordered individually. However, they are also an optional component of FEINMETALL high-current contacting.

Modular design of high current probes

In addition to pure high current contacting, further functionalities are often required, such as:

  • Temperature monitoring
  • Sense pins for voltage measurement
  • Cooling of the contact area

In addition to excellent contact quality, all these requirements can be met with modern Feinmetall contacts. Thanks to the Feinmetall modular principle, corresponding functions can be integrated into the contact probe as required. Customers can therefore decide for themselves which functions they need and then obtain their perfect contacting solution.


For years, Feinmetall has built up a high level of expertise in high-current contacting and is involved in the latest technology developments in the field of e-mobility and battery cell production. With this knowledge, we are also happy to assist new partners.


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