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===<!--6.4.6 -->General Rules for Dimensioning of Contacts===
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[[File:General Rules for Dimensioning of Contact Rivets.jpg|left|thumb|Figure 1: General Rules for Dimensioning of Contact Rivets]]
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'''Failure Probability of Single and Double (Bifurcated) Contacts''' (according to Thielecke) {| class="twocolortable" style="text-align: left; font-size: 12px;width:40100%"
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|10 A |approx0. 3 – 3.5 mm head diameter04 |-|20 A |approx. 5 mm head diameter|1 x 10<sup>-|For DC currents: |approx. 0.5 – 0.8 A4</mm²sup>|} *'''Head radius R for electrical loads''' {| class="twocolortable" style="text2 x 10<sup>-align: left; font-size: 12px;width:40%"|-|for I 8< 1 A |R ≈ 1,5 mm/sup>
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|I = 6 A 0.1 |R ≈ 2 x 10<sup>-3</sup>|4 x 10<sup>-5 mm</sup>|8 x 10<sup>-5</sup>|8 x 10<sup>-9</sup>
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|I = 0.2|1 x 10<sup>-4</sup>|8 x 10<sup>-6</sup>|4 x 10 A <sup>-6</sup>|R ≈ 4 x 10 mm<sup>-8</sup>
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|I = 20 A 0.3|R ≈ 15 mm5.5 x 10<sup>-6</sup>|1.5 x 10<sup>-6</sup>|1.8 x 10<sup>-7</sup>|3.2 x 10<sup>-10</sup>
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<div class="multiple-images">
<figure id="fig:Failure probability of a contact as a function of the voitage">
[[File:Failure probability of a contact as a function of the voitage.jpg|left|thumb|Figure 2: Failure probability of a contact as a function of the voltage (according to Kirchdorfer); Ag/Ni10; 10 mA]]
</figure>
<figure id="fig:Failure probability of a contact as a function of the current">
[[File:Failure probability of a contact as a function of the current.jpg|left|thumb|Figure 3: Failure probability of a contact as a function of the current (according to Kirchdorfer); Ag/Ni10; F<sub>k</sub> = 0.45 N; U = 24 V]]
</figure>
</div>
==References==
[[Application Tables and Guideline Data for Use of Electrical Contact Design#References|References]]
[[de:Faustregeln_für_die_Kontaktdimensionierung]]