IP45 vs IP47
Head-to-head comparison of two IEC 60529 ingress protection ratings.
IP45 and IP47 are both IEC 60529 ingress protection codes, but they differ in liquid protection (level 5 vs 7). IP45 is rated for > 1 mm — small wires and water jets (6.3 mm nozzle), while IP47 provides > 1 mm — small wires and temporary immersion (up to 1 m).
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.
IP47 provides protection against solid objects larger than 1.0 mm and protection against the effects of temporary immersion in water. Ingress of water in quantities causing harmful effects shall not be possible.. It is an IEC 60529 ingress protection code combining first-digit (solid) level 4 with second-digit (liquid) level 7.
Detailed comparison
The stronger rating on each row is highlighted in emerald.
Solid protection (first digit)
IP45
4 — > 1 mm — Small Wires
IP47
4 — > 1 mm — Small Wires
Liquid protection (second digit)
IP45
5 — Water Jets (6.3 mm nozzle)
IP47
7 — Temporary Immersion (up to 1 m)
Dust-tight
IP45
No
IP47
No
Water-jet resistant
IP45
Yes
IP47
Yes
Submersible
IP45
No
IP47
Yes
Outdoor suitable
IP45
Yes
IP47
Yes
The exact difference (IP45 vs IP47)
Solid protection
IP45
Level 4 — > 1 mm — Small Wires
IP47
Level 4 — > 1 mm — Small Wires
Both IP45 and IP47 share the same solid protection: > 1 mm — Small Wires.
Liquid protection
IP45
Level 5 — Water Jets (6.3 mm nozzle)
IP47
Level 7 — Temporary Immersion (up to 1 m)
IP45 handles 30 kPa (Water Jets (6.3 mm nozzle)), while IP47 handles Hydrostatic ~10 kPa at 1 m (Temporary Immersion (up to 1 m)). IP47 provides 2 levels more liquid protection.
NEMA equivalents
No direct NEMA equivalent.
Recommendation
IP47 offers higher overall protection than IP45. Choose IP47 for harsher environments; IP45 may suffice for milder conditions and can be more cost-effective.