Depending on their design, IP45 enclosures suit indoor, semi-outdoor, equipment rooms, factories, workshops, or sheltered outdoor sites. Suitability depends on direct exposure to rain, water jets, dust, moisture, and temperature fluctuations.

For indoor control equipment, power devices, or industrial components, IP45 protects against larger foreign objects and low-pressure water jets. For outdoor installations, consider sheltering, wind-driven rain, base height, drainage, UV rays, condensation, and surface treatment.

If equipment faces continuous rain, strong water jets, submersion, coastal salt spray, or heavy fine dust, do not rely solely on the "IP45 enclosure" label. Re-evaluate the required IP rating, materials, and enclosure design based on on-site conditions.