IP65 vs IP21
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP65 and IP21 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 6 vs 2) and liquid protection (level 5 vs 1). IP65 is rated for dust-tight and water jets (6.3 mm nozzle), while IP21 provides > 12.5 mm — finger and vertically dripping water.
IP65 is dust-tight and resists low-pressure water jets (6.3 mm nozzle, 30 kPa). It is the most common standard for fully exposed outdoor electronics such as lighting, cameras, and EV chargers.
Designed for environments requiring protection against solid objects larger than 12.5 mm and protection against vertically falling drops of water. Dripping water shall have no harmful effects., IP21 is an IEC 60529 code combining solid level 2 with liquid level 1.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP65
6 — Dust-Tight
IP21
2 — > 12.5 mm — Finger
Liquid protection (second digit)
IP65
5 — Water Jets (6.3 mm nozzle)
IP21
1 — Vertically Dripping Water
Dust-tight
IP65
Yes
IP21
No
Water-jet resistant
IP65
Yes
IP21
No
Submersible
IP65
No
IP21
No
Outdoor suitable
IP65
Yes
IP21
No
The exact difference (IP65 vs IP21)
Solid protection
IP65
Level 6 — Dust-Tight
IP21
Level 2 — > 12.5 mm — Finger
IP65 provides "Dust-Tight" (level 6), while IP21 provides "> 12.5 mm — Finger" (level 2). IP65 is 4 levels higher.
Liquid protection
IP65
Level 5 — Water Jets (6.3 mm nozzle)
IP21
Level 1 — Vertically Dripping Water
IP65 handles 30 kPa (Water Jets (6.3 mm nozzle)), while IP21 handles 0.1 mm/min drip rate (Vertically Dripping Water). IP65 provides 4 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP65 offers higher overall protection than IP21. Choose IP65 for harsher environments; IP21 may suffice for milder conditions and can be more cost-effective.