Contact lubricants


In the new contact technology alloys, plastics and customized contact materials are being developed constantly. However, it is still not possible to eliminate the root cause of a switch malfunction: the creation of a perfectly smooth metal contact surface.

This leads to the following problems:


Heat development

When the surface contact is not sufficient, the current is transported only over a part of the intended surface and the resulting heat concentrate at the contact points. This form high-resistance oxide layers and hot spots may occur. The general functionality of the switch deteriorates and may lead to a complete failure when welding together the two mating surfaces.


Arcing (mini lightning strikes)

In contacts that are not lubricated, arcing may occur (it jump small sparks over). By ionization of the air and the resulting rise in temperature metal particles stick to the contacts, making new peaks and troughs are formed on the surfaces.


Mechanical wear

Mechanical couplings, both statically and dynamically, suffer from mechanical wear. For static contacts as the Fettage (abrasion) is called; the small movements of the contacts caused due to vibrations, temperature changes and so on. If the surfaces rub against each other, metal particles are broken off from the tips and rub through the coated surfaces. Thereby, the underlying metal is exposed to oxidation and wear. Additionally the detached metal particles can cause intermittent signal transmission and ultimately switch failure.


Silicone contamination

Since silicone-containing materials over long distances can crawl, such products should not be used in switch assembly areas. When silicone is present between moving or vibrating contacts, they react under arcing silicon carbide. These crystals abrade the contact surface and cause electrical failure.

The use of a contact lubricant increases the actual surface area of ​​the contacts and dramatically fills air gaps, which eliminates widerum hot spots. The contact resistance is reduced. Contact lubricants Electrolube also eliminate problems that can be caused by silicone contamination, when applied prior to application of the silicone.