This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
Please find the following:
The Ui: Rated insulation voltage and Uimp: Rated impulses withstand voltage
It is the same like the CB tested according the IEC60947-2 which is given under Dielectric tests.
However for routine test only dielectric test at 50 Hz, required, the voltage depends on the Ui:
300< Ui < 690V: 2500V
690< Ui <800V: 3000V
800< Ui <1000V: 3500V.