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→13.3.1 Measuring of Contact Resistance
The measuring conditions for contact resistance measurement are defined per IEC DIN EN 61810-7 for the contact load categories as follows:
*Contact load category CC0: < 30 mV; < 10 mA <br />*Contact load category CC1: < 10 V; < 100 mA <br />*Contact load category CC2: < 30 V; < 1 A <br />
For contacts designed to cover multiple load ranges the measuring category for the lowest range must be used. Contact resistance measurement usually is carried out following the 4-wire method at a temperature of 27°C ± 1°C and relative humidity of 63 – 67% RH.
