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What does "63.8" on the back of a 3720 ACM mean?

Some older 3720 used to use "63.8" as an ordering option which referred to a 69VAC measurement system.

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    All content © 1992-2007 Schneider Electric

Legacy KB System (APS) Data: RESL187974 V1.0, Originally authored by KBAdPM on 09/08/2007, Last Edited by KBAdPM on 09/08/2007
Related ranges: 3720 ACM
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