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.
Isolation : it is switching the ciruit to open it with a suitable space between moving and fixed contact to prevent ionization of air in this space ( complete safety )
Disconnection : it is switching the ciruit to open it but with a space between fixed and moving contact not suitable to prevent ionization of air in this space , in this case arcs can be done and it is not completely safe
Disconnection : it is switching the ciruit to open it but with a space between fixed and moving contact not suitable to prevent ionization of air in this space , in this case arcs can be done and it is not completely safe