Contact Materials

Silver is traditionally the most extensively used metal in electrical contacts due to its corrosion resistance, electrical conductivity and thermal conductivity properties. In pure form it is suitable for low pressure contacts demanding high conductivity.

Operating parameters which dictate other contact pressure, material transfer or arc quenching considerations are best served by silver alloys with copper, cadmium or cadmium oxide.

Medium to heavy duty applications may call for the use of silver tungsten or copper tungsten contact material.

In order to accommodate requirements dictated by economic or substrate bonding factors, SBA produce a range of silver and silver alloys in laminated bi-metal materials.

Contact Refurbishment or Duplication

SBA provides the alternative to the frequent problems which arise relating to the replacement of all forms of electrical contacts. Our comprehensive service overcomes the common difficulties of:

• Redundant design
• Long lead time, hence down time
• High costs
• High stock requirements

SBA can refurbish all types of contacts to original or improved specification. If required, our engineering department will replicate the total contact to client design specification, or by precise engineering design provided by SBA from samples provided.

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