For MCCB NSX 400/630 A - How can the earth leakage protection be done ?
For the MCCB of type NSX 400/630 A or even the 100/160/250 A,
The Avilable trip units are up to 6.2 or 6.3 That are responsible for ground fault protection and not earth leakage protection so in order to perform earth leakage protection for MCCB NSX 400/630 A one of the following methods can be suitabe:
1- Using the Trip unit accessory (Vigi Module with varaiable adjustable senstivity) that is added to the MCCB
2- Using the external vigirex module with closed toroid that is connected to the trip unit of the MCCB.