IP57 vs IP16
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP57 and IP16 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 5 vs 1) and liquid protection (level 7 vs 6). IP57 is rated for dust-protected and temporary immersion (up to 1 m), while IP16 provides > 50 mm — back of hand and powerful water jets (12.5 mm nozzle).
IP57 is dust-protected and tolerates temporary immersion up to 1 m for 30 minutes. Useful for portable devices that may be dropped in shallow water.
IP16 is an ingress protection code that ensures protection against solid objects larger than 50 mm and protection against powerful water jets. Water projected in powerful jets by a 12.5 mm nozzle against the enclosure from any direction shall have no harmful effects.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 1 with second-digit (liquid) level 6.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP57
5 — Dust-Protected
IP16
1 — > 50 mm — Back of Hand
Liquid protection (second digit)
IP57
7 — Temporary Immersion (up to 1 m)
IP16
6 — Powerful Water Jets (12.5 mm nozzle)
Dust-tight
IP57
Limited
IP16
No
Water-jet resistant
IP57
Yes
IP16
Yes
Submersible
IP57
Yes
IP16
No
Outdoor suitable
IP57
Yes
IP16
Yes
The exact difference (IP57 vs IP16)
Solid protection
IP57
Level 5 — Dust-Protected
IP16
Level 1 — > 50 mm — Back of Hand
IP57 provides "Dust-Protected" (level 5), while IP16 provides "> 50 mm — Back of Hand" (level 1). IP57 is 4 levels higher.
Liquid protection
IP57
Level 7 — Temporary Immersion (up to 1 m)
IP16
Level 6 — Powerful Water Jets (12.5 mm nozzle)
IP57 handles Hydrostatic ~10 kPa at 1 m (Temporary Immersion (up to 1 m)), while IP16 handles 100 kPa (Powerful Water Jets (12.5 mm nozzle)). IP57 provides 1 level more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
No direct NEMA equivalent.
Recommendation
IP57 offers higher overall protection than IP16. Choose IP57 for harsher environments; IP16 may suffice for milder conditions and can be more cost-effective.