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What are different ways of adding earth leakage protection in Compact NSX100 - 530 Breaker

There are two ways to add earth-leakage protection to any three or four-pole Compact NSX100 to 630 circuit breaker equipped with a magnetic, thermal-magnetic or Micrologic 2, 5 or 6 trip unit:

1. by adding a Vigi module to the circuit breaker to form a Vigicompact NSX
2. by using a Vigirex relay and separate toroids.

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