IP58
Last updated: Aug 9, 2026IP58 is dust-protected and rated for continuous immersion in water under manufacturer-specified conditions. A niche rating for equipment that must operate submerged while allowing limited dust ingress.
Solid 5
Dust-Protected
Liquid 8
Continuous Immersion (manufacturer-specified)
What IP58 means
The IP code IP58 is part of the IEC 60529 standard for ingress protection. The first characteristic numeral, 5, indicates the level of protection against solid objects and access to hazardous parts. The second numeral, 8, indicates the level of protection against the ingress of water. Together, these digits describe exactly what an enclosure rated IP58 can withstand.
For solid protection, the digit 5 means the enclosure is dust-protected. Protected against access to hazardous parts with a wire. Dust ingress is not entirely prevented, but it must not enter in a quantity sufficient to interfere with satisfactory operation of the equipment or impair safety. The test method is dust chamber (talcum powder) for 8 hours with enclosure under reduced internal pressure; dust ingress acceptable only if it does not impair operation or safety.
For liquid protection, the digit 8 means the enclosure resists continuous immersion (manufacturer-specified). Protection against the effects of continuous immersion in water under conditions specified by the manufacturer. Ingress of water in quantities causing harmful effects shall not be possible. The test procedure is conditions more severe than ipx7 agreed between manufacturer and user; depth and duration specified on the equipment.
IP58 vs IP68: IP68 is fully dust-tight. IP58 vs IP57: IP58 supports continuous immersion; IP57 is temporary (30 min). When specifying IP58 for a project, confirm the rating certificate from the manufacturer and consider that seals degrade over time with temperature cycling, UV exposure, and chemical contact.
Full specification table
| Parameter | Solid digit (5) | Liquid digit (8) |
|---|---|---|
| Protection level | Dust-Protected | Continuous Immersion (manufacturer-specified) |
| Description | Protected against access to hazardous parts with a wire. Dust ingress is not entirely prevented, but it must not enter in a quantity sufficient to interfere with satisfactory operation of the equipment or impair safety. | Protection against the effects of continuous immersion in water under conditions specified by the manufacturer. Ingress of water in quantities causing harmful effects shall not be possible. |
| Test method | Dust chamber (talcum powder) for 8 hours with enclosure under reduced internal pressure; dust ingress acceptable only if it does not impair operation or safety. | Conditions more severe than IPX7 agreed between manufacturer and user; depth and duration specified on the equipment. |
| Object size / water pressure | Limited dust ingress | Specified by manufacturer |
| Test distance | Per standard | Specified depth (often > 1 m) |
| Test duration | Per standard | Continuous (specified by manufacturer) |
Typical applications
Submersible industrial sensors
Underground pump electronics
Wastewater monitoring equipment
NEMA equivalent
Recommended products for IP58
Submersible sensor housing
All IP58 comparisons
69 pairsIP58 offers higher overall protection than IP00. Choose IP58 for harsher environments; IP0
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IP49K and IP58 offer comparable overall protection; choose based on the specific protectio
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IP59K offers higher overall protection than IP58. Choose IP59K for harsher environments; I
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