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IP65 vs IP66 vs IP67 IP Ratings: The Ultimate Guide

Industrial control box with IP66 rating being tested against dust and water jets on a construction site, demonstrating resistance to harsh outdoor conditions.

Network equipment faces several challenges when installed outdoors. Sudden rain, wind, dust, and other environmental factors can cause your critical infrastructure to fail, leading to costly damage and downtime. That’s where the IP rating on devices comes into play.  An acronym for Ingress Protection (IP Rating), IP is a standardized method that indicates how well the devices resist water and dust.

In this blog, we will focus on IP65, IP66, and IP67. Understanding these standards is essential when choosing equipment that can withstand the real-world environmental conditions, whether it’s an audio/video connector, an industrial enclosure, a security camera setup, or even outdoor lighting. These ratings not only define the level of protection from dust and weather but also the degree of water exposure the device can handle.

What are IP ratings?

The International Electrotechnical Commission defines IP as Ingress Protection (IP Rating), with the two-digit code representing how exactly the solution is protected from solids and liquids:

First Digit (0-6) represents: Protection from solids like dust particles and debris.

Second Digit (0-9) represents: Protection from liquids, primarily water.

First Digit (Solids) Protection Against Solids Description
0 No protection No special protection against contact or objects
1 >50 mm Protected against large solid objects (e.g., accidental hand contact).
2 >12.5 mm Protected against fingers or similar objects.
3 >2.5 mm Protected against tools, thick wires, or small solid objects.
4 >1 mm Protected against most wires, screws, or similar objects.
5 Dust-protected Limited dust ingress allowed, but not enough to interfere with operation.
6 Dust-tight Complete protection against dust ingress. Highest solid protection level.
Second Digit (Liquids) Protection Against Liquids Description
0 No protection No water protection at all.
1 Dripping water Protected against vertically falling drops of water (e.g., condensation).
2 Dripping water (tilted) Protected against dripping water when tilted up to 15°.
3 Spraying water Protected against water sprayed at up to 60° from vertical.
4 Splashing water Protected against splashing water from any direction.
5 Water jets Protected against low-pressure water jets from any direction.
6 Powerful water jets Protected against strong, high-pressure water jets.
7 Immersion up to 1m Protected against immersion in water up to 1 meter depth for up to 30 minutes.
8 Immersion beyond 1m Protected against continuous immersion in water under conditions specified by the manufacturer (usually >1m depth).
9 (or 9K) High-pressure, high-temperature water Protected against close-range, powerful, high-temperature water jets (often used for washdowns in food and industrial environments).

IP65:

6= Completely dust tight. No dust or solid particles can enter.

5=Protected against low-pressure water jets from any direction.

Imagine you have set up an outside speaker and light for an event. A light rain begins, and it’s pouring on your devices or cables. If it’s an IP65-rated cable, then the equipment can resist the rain.

The Key features of IP65:  

    • Completely dust-tight, no ingress of duct or small particles
    • Suitable for low-pressure water jets, rain, and occasional splashes
    • Resist dirt, debris, rain, and insects
  • Reduces the risk of short circuits or damage caused by dust and water exposure

Applications:

Outdoor lighting: Street lights, floodlights, and signage

Industrial and construction sites: Equipment in manufacturing, warehouse, and rugged outdoor conditions

Transportation and logistics: The in-vehicle systems that are exposed to weather

Food Industry: Food processing and packaging areas

Heavy-duty IP65-rated industrial connector lying on wet muddy ground during rainfall, showing resistance to water and dust in harsh outdoor conditions

IP66:

6= Completely dust tight. No dust or solid particles can enter.

6= Protected against strong, high-pressure water jets.

Equipment with this rating can withstand high-pressure water jets, such as those used to clean industrial machinery, and continue operating smoothly without any failure.

The key features of IP66:

  • Protection against dust and high-pressure water
  • Not immersion-proof
  • Fit for industries like Marina, construction, and outdoor events.
  • Handle at most 100 liters/minute using 12.55 nozzles, pressure 100kpa from 3 meters away
  • Resistance to corrosion and contamination
  • Storm-resistant

Applications:

  • Outdoor lighting: Street lights, flood lights
  • Industrial and manufacturing equipment: Junction boxes, control panels, operator station
  • Marine and Coastal Applications: Electric enclosures in ships, docks, or offshore rigs
  • Telecommunication and Networking: Wireless access points, antennas, and junction boxes.
  • Renewable Energy Systems: Solar Inverters, junction boxes, wind turbine electronics
  • Transportation and Automotive: EV charging stations, rail system, roadside cabinets

 

IP67:

6= Completely dust tight. No dust or solid particles can enter.

7= Completely protected against immersion in water up to 1 meter (3.3 feet) for 30 minutes.

This equipment is engineered with advanced design features and precision production techniques to achieve superior protection from water, dust, and other particles. Seals and gaskets are installed at ports, joints, and openings to stop the water from entering. Additionally, a waterproof coating is applied to critical components for extra protection. These products also undergo rigorous testing in order to ensure they meet strict resistance and durability standards.

Key Features:

  • 100% protection against dust, dirt, sand, and small particles
  • Can withstand rain, splashes, high-pressure cleaning, and temporary immersion
  • Made from strong polycarbonate, fiberglass, or aluminum
  • Suitable for outdoor, industrial, and electronics equipment and environments

Applications:

  • Outdoor Security Systems: Camera, sensors, alarm
  • Utility equipment: Control panel, junction box, smart meter
  • Gadgets: phone, speakers, wearables
  • Scientific Instruments: Data logger, field sensors

IP67-rated portable speaker fully submerged in water, demonstrating dust-tight and waterproof protection for use in rugged outdoor environments

Conclusion:

Choosing the right equipment for outdoor and harsh environments is crucial, and understanding IP standards makes that choice much easier. IP65, IP66, and IP67 each offer robust protection against dust and water. Whether in an industrial or marine environment, understanding your IP rating is crucial to ensure devices stay safe, reliable, and operating as intended through real-world conditions.

For high–quality solutions that meet these standards, check out : Home – Gruber Communications

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