IP45 vs IP50
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP45 and IP50 are both IEC 60529 ingress protection codes, but they differ in solid-object protection (level 4 vs 5) and liquid protection (level 5 vs 0). IP45 is rated for > 1 mm — small wires and water jets (6.3 mm nozzle), while IP50 provides dust-protected and no protection.
IP45 protects against 1 mm solid objects and low-pressure water jets (6.3 mm nozzle, 30 kPa). A mid-range indoor/outdoor-covered rating for equipment that may be rinsed or hosed gently.
Under IEC 60529, IP50 specifies dust-protected (limited ingress, no harmful deposit) and no protection against water. It is an IEC 60529 ingress protection code combining first-digit (solid) level 5 with second-digit (liquid) level 0.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP45
4 — > 1 mm — Small Wires
IP50
5 — Dust-Protected
Liquid protection (second digit)
IP45
5 — Water Jets (6.3 mm nozzle)
IP50
0 — No Protection
Dust-tight
IP45
No
IP50
Limited
Water-jet resistant
IP45
Yes
IP50
No
Submersible
IP45
No
IP50
No
Outdoor suitable
IP45
Yes
IP50
No
The exact difference (IP45 vs IP50)
Solid protection
IP45
Level 4 — > 1 mm — Small Wires
IP50
Level 5 — Dust-Protected
IP45 provides "> 1 mm — Small Wires" (level 4), while IP50 provides "Dust-Protected" (level 5). IP50 is 1 level higher.
Liquid protection
IP45
Level 5 — Water Jets (6.3 mm nozzle)
IP50
Level 0 — No Protection
IP45 provides "Water Jets (6.3 mm nozzle)" (level 5), while IP50 provides "No Protection" (level 0). IP45 is 5 levels higher.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP45 offers higher overall protection than IP50. Choose IP45 for harsher environments; IP50 may suffice for milder conditions and can be more cost-effective.