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The TeSys D contactor family are available as 3 or 4 pole.
No 3-pole contactor in this family has a NC power contact (main pole).
4-pole contactors can consist of either:
2 NC poles + 2 NO poles ( e.g. LC1D98xx, LC(P)1D40008xx, LC(P)1D80008xx) or 4 NO poles ( e.g. LC1DT20xx, LC1D80004xx)
No 4-pole contactors therefore consist of 4 NC poles, but there is a way to obtain this function if required.
To have 4 NC contacts, you can in some cases use a 4-pole contactor with 4 NO contacts and the appropriate mechanical latch block for the contactor part number:
>= 100 ms for AC control
>= 200 ms for DC control
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