We normally allow up to 2000 Microohms in a filter application. If the contact resistance has a high value, it´s due to powder contamination and sometimes you can use a higher current level to measure correct resistance levels. Another option is to operate the breaker 30 times without any load on the breaker, that cleans up the contact path.
High Voltage Products
If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.