This table summarises the variations in Type ‘n’ Equipment
| Type ‘n’ equipment variation | Marking |
| Energy limited equipment | “nL” replaced by ‘ic’ |
| Protected sparking Includes devices protected by: sealing, hermetic-sealing, enclosed-break and non-incendive methods | “nC” encapsulation replaced by ‘mc’ and enclosed break replaced by “dc”. |
| Non-sparking equipment | “nA” is replaced by “ec” |
| Restricted breathing enclosures | “nR” |
