No, you misunderstand. That line in /etc/fstab will allow you to easily mount an NTFS partition, as long as it’s the first partition on the drive that the kernel sees as /dev/sda.
So unless you’re also mounting NTFS partitions which are not the first partition on the drive and/or they are on another drive than /dev/sda, you can use this one line for sequentially using and mounting an NTFS partition. Dolphin will check /etc/fstab when you tell it to mount the volume, and if you mount it manually, then you only need to issue the command… 
sudo mount /home/wind77/NTFS
… provided that the folder /home/wind77/NTFS exists, of course.
Perhaps some light instructional reading is at the order. 