IP30 vs IP68
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP30 and IP68 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 3 vs 6) and liquid protection (level 0 vs 8). IP30 is rated for > 2.5 mm — tool / wire and no protection, while IP68 provides dust-tight and continuous immersion (manufacturer-specified).
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.
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.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP30
3 — > 2.5 mm — Tool / Wire
IP68
6 — Dust-Tight
Liquid protection (second digit)
IP30
0 — No Protection
IP68
8 — Continuous Immersion (manufacturer-specified)
Dust-tight
IP30
No
IP68
Yes
Water-jet resistant
IP30
No
IP68
Yes
Submersible
IP30
No
IP68
Yes
Outdoor suitable
IP30
No
IP68
Yes
The exact difference (IP30 vs IP68)
Solid protection
IP30
Level 3 — > 2.5 mm — Tool / Wire
IP68
Level 6 — Dust-Tight
IP30 provides "> 2.5 mm — Tool / Wire" (level 3), while IP68 provides "Dust-Tight" (level 6). IP68 is 3 levels higher.
Liquid protection
IP30
Level 0 — No Protection
IP68
Level 8 — Continuous Immersion (manufacturer-specified)
IP30 provides "No Protection" (level 0), while IP68 provides "Continuous Immersion (manufacturer-specified)" (level 8). 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.