I`m looking for a solution of MCC Panel to be used in IT Network with 525V or 690V.
The combination contactor + breaker needs to achieve 65kA or more.
Could you share your thoughts about that?
The ability of a circuit breaker to operate in IT earthing system is covered by the normative Annex H of IEC/EN 60947-2.
All our product TeSys GV and ComPact NSX are compliant to this Annex H for all operating voltages (if not they would be marked with a strikethrough IT). Compact NSX HB1 for instance is suitable for 690V 65kA IT application. (They are used often in 690V Marine application that is 100% IT for instance)
For Contactor there is no special requirement according to earthing system. Circuit-breaker & Contactor coordination tests according to IEC/EN 60947-4-1 are as well not depending of earthing system.
Some additional requirment may exist in some countries. Do you have some special requirments in addition to compliance with IEC/EN 60947-2 and IEC/EN 60947-4-1 in your project ?
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