Contact resistance is a resistance to the current flow because of surface conditions and a few other causes when the contacts get touched with one another (in a closed situation of a device). It can happen in between the contacts of:
Many other switching devices. The measurement of contact resistance helps to identify fretting corrosion of the contacts and permits the corrosion to be well identified and avoided. An increase in the contact resistance may cause a high-voltage drop in your electrical system that requires it to be controlled. It is a piece of must-have equipment for testing engineers. Contacts in a circuit breaker require to be checked intermittently for ensuring breakers are healthy and functional.
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Contact Resistance Meter
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