11 April 2022
Some Current Transformers (CT's) are marked with H1 on one side and H2 on the other
Applies to Current Transformers (CT's) by SquareD/Schneider Electric
Some applications are polarity specific
Yes, to achieve the proper polarity of the circuit, which is critical in some applications, it is necessary to have the source side of the conductor entering the H1 polarity side of the CT. This is clearly detailed in the installation instructions included with the CT.