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Anyone any tip how I can find some information about minimum #current and #voltage necessary to have an auxiliary contact of a #breaker conducting? It seems there must be some minimum as for having a conduction of a small contact. #engineer #electrical #control #question
@Utzer If the contact is working right, resistance should be close to 0 when triggered.

Can you share a bit more about the situation?

It is an auxiliary contact of a breaker, something that can switch voltages of 220 V I guess, I have to look into the datasheet of the breaker to find that out. But however, GE said that there is a minimum current that hast to be flowing, I studies electrical engineering, but never encountered anything like a minimum current. So then I thought I'd read a bit about that, but I couldn't find anything online, mainly because I don't know what to search for I assume.

The contact resistance should be low, it is a 24V signaling voltage that is switched by the aux. contact and the digital input of the control reading the signal is consuming 6mA (according to our specification I think).

@Utzer Any luck finding the part info or manual on this one?

The manual did just have some information about the maximum current for these contact depending on the voltage of the signal, maximum 1A for 220Vdc.

@Utzer That sounds reasonable, but still doesnt address the minimum. Min still smells like BS to me, but Ive been wrong before.

Yeah it does for me too, but the goal is to fulfill that "requirement" to proof it does not solve the contact problem. We have same setup in many other cases, but here we have a problem.