ABB REL 551 2.3 Series - Page 27

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Mounting the terminal &KDSWHU
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Use four of the delivered screws.
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Use the remaining four screws.
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Make sure a flush or semi-flush mounting kit is available before proceeding.
The procedure for flush and semi-flush mounting is mainly the same. In semi-flush
mounts a distance frame is added. The delivered mounting seal is only necessary to ful-
fil IP 54.