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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For further questions or help, please contact us directly under Contact DODUCO


Featured Article

Formeln aus der Kontaktphysik

Formeln aus der Kontaktphysik

  • Engewiderstand
R_e = \rho/2a

(Einflächenkontakt nach Holm, kreisförmige Berührungsfläche zwischen fremdschichtfreien Oberflächen)

R_e = \rho/2Na

(Mehrflächenkontakt nach Holm ohne gegenseitige Beeinflussung der N Einzelflächen)

R_e = \rho/2 x \sum a_i + 3 \pi \rho /32N^2 x \sum \sum (s_ij) i \neq j

(Mehrflächenkontakt nach Greenwood unter Berücksichtigung der gegenseitigen Beeinflussung)

  • Kontaktwiderstand
...

Featured Files

Phase diagram of gold-silver.jpg


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