IP68 vs IP30
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP68 and IP30 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 3) and liquid protection (level 8 vs 0). IP68 is rated for dust-tight and continuous immersion (manufacturer-specified), while IP30 provides > 2.5 mm — tool / wire and no protection.
IP68 is dust-tight and protects against continuous immersion in water under conditions specified by the manufacturer (typically deeper than 1 meter for prolonged periods). The standard for submersible and marine equipment.
IP30 protects against tools and 2.5 mm solid objects but offers no water protection. A basic indoor rating for equipment in dry, low-dust environments where only tool-access protection is required.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP68
6 — Dust-Tight
IP30
3 — > 2.5 mm — Tool / Wire
Liquid protection (second digit)
IP68
8 — Continuous Immersion (manufacturer-specified)
IP30
0 — No Protection
Dust-tight
IP68
Yes
IP30
No
Water-jet resistant
IP68
Yes
IP30
No
Submersible
IP68
Yes
IP30
No
Outdoor suitable
IP68
Yes
IP30
No
The exact difference (IP68 vs IP30)
Solid protection
IP68
Level 6 — Dust-Tight
IP30
Level 3 — > 2.5 mm — Tool / Wire
IP68 provides "Dust-Tight" (level 6), while IP30 provides "> 2.5 mm — Tool / Wire" (level 3). IP68 is 3 levels higher.
Liquid protection
IP68
Level 8 — Continuous Immersion (manufacturer-specified)
IP30
Level 0 — No Protection
IP68 provides "Continuous Immersion (manufacturer-specified)" (level 8), while IP30 provides "No Protection" (level 0). IP68 is 8 levels higher.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP68 offers higher overall protection than IP30. Choose IP68 for harsher environments; IP30 may suffice for milder conditions and can be more cost-effective.