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Contact systems

We make high demands on the metal contact surfaces in order to protect connectors against corrosion and environmental influences. Naturally, we use only high-grade copper alloys and Cr(VI)-free processed steel parts.

Tin-plated contact system

Tin-plated metal part  

Tin-plated metal part

Tin-plated contact systems are a practical and inexpensive solution for soldering applications.

Tin initiates an intermetallic reaction with base materials, such as brass or bronze. This can lead to increased corrosion. A nickel resistive layer is used in Phoenix Contact products to prevent this reaction.

This means for you:

  • Reliable contacting can be achieved at voltages > 20 mV and currents > 100 mA
  • Gas-tight contact zones with low contact resistance
  • Permanently unchanged surface quality
  • No whisker growth later on
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Silver-plated contact system

Silver-plated metal part for connectors  

Silver-plated metal part for connectors

High level of conductivity at higher currents – you can benefit from this excellent characteristic of silver layers.

Used in our high-current connectors, these surface systems offer the following advantages:

  • Low contact force
  • Large number of insertion/withdrawal cycles
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Gold-plated contact system

Partially gold-plated contact pins for headers  

Partially gold-plated contact pins for headers

The main advantage of gold layers is their resistance to corrosion in various different aggressive media.

With these characteristics, gold surfaces for voltages < 20 mV and currents < 3 mA are ideal and durable surfaces with > 100 insertion/withdrawal cycles.

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Double steel spring – extra safety for optimum performance

Double steel spring of the COMBICON contact metal  

Double steel spring of the COMBICON contact metal

Integrated double steel springs provide additional safety in the event of power and temperature fluctuations.

Used in our connectors for high-current applications, the double steel spring offers the following advantages:

  • No contact corrosion as the double steel spring exerts additional pressure on the contact
  • Long-term stability of the contact resistance
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Further information
  • Contact systems


Unit 15C, 906-930 Great South Road, Penrose
Auckland 1061
New Zealand

Phone: 0508 474 636
Toll Free (Local)
09 950 8495


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