What is the minimum voltage that requires battery terminations to be at least IP 2X?

The requirement for battery terminations to have a minimum Ingress Protection (IP) rating of IP 2X is based on safety standards that aim to prevent accidental contact with live parts. In this context, a voltage of 60 VDC (or above) is considered potentially hazardous, necessitating additional protection measures.

At voltages of 60 VDC, the risk of electric shock increases, which is why the standard emphasizes that terminations must be shielded or designed to minimize the risk of accidental contact. The designation of IP 2X indicates that the enclosure must be designed to prevent access to hazardous parts while also protecting against solid objects larger than 12 mm, which aligns with the safety standards established for electrical systems that operate at higher voltages.

Options suggesting lower voltages, such as 30 VDC, 45 VDC, and 75 VDC, all imply different risk levels. While it may be necessary to provide some level of protection at these voltages, they do not necessitate the higher standard of IP 2X in the same way that 60 VDC does. This delineation ensures that the appropriate safety measures are taken based on the specific voltage and the associated risks of electric shock.