Data Book of Electrical Contacts

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Welcome to our Wiki of electrical contacts

The basis of this Wiki is the 2012 issue of the "DODUCO Data Book of Electrical Contacts" which is also available in printed form.
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Featured Article

Tungsten and Molybdenum Based Materials

Tungsten and Molybdenum (Pure Metals)

Tungsten is characterized by its advantageous properties of high melting and boiling points, sufficient electrical and thermal conductivity and high hardness and density. It is mainly used in the form of brazed contact tips for switching duties, that require a rapid switching sequence, such as horn contacts for cars and trucks.

Molybdenum has a much lesser importance as a contact material since it is less resistant against oxidation than tungsten.

Both metals are how...

Featured Files

Maximum movable bridge temperature rise for different contact materials.jpg
Maximum movable bridge temperature rise for different contact materials in a 132 kW contactor after high load (AC-4) switching

1 Ag/CdO 88/12 sintered and extruded 2 Ag/SnO27.5In2O32.5 internally oxidized 3 Ag/SnO2 88/12 sintered and extruded

4 Ag/SnO2...
Pages: Testing Procedures for Power Engineering,
Prüfverfahren in der Energietechnik

by Doduco Redaktion


Thermal-Properties-of-the-Most-Important-Metals.jpg
Thermal Properties of the Most Important Metals

by Doduco Redaktion