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For Masterpact air circuit breaker (ACB) of type NW or NT, what are the avilable trip unit types and what arethe main protection functions supported by these trip units ?

- For the Masterpact ACB of type NW or NT, the available trip units for these range are of the Micro logic type trip units.

- These Micro logic trip units are found in the following types:

1- Micro logic (2): used for basic protection  which include (Long + Instantaneous) Protection supported.
2- Micro logic (5): used for basic protection  Which include (selective zone feature + Long + Short + Instantaneous) protection supported.
3- Micro logic (6): used for selective protection (same as Micro logic 5) + earth fault protection.
4- Micro logic (7): used for selective protection (same as Micro logic 5) + earth leakage protection.

Schneider Electric Egypt and North East Africa

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