Question 1

What does IP67 mean?

Accepted Answer

IP67 means the device is dust-tight (first digit 6 — no dust ingress) and protected against temporary immersion in water (second digit 7 — up to about 1 metre deep for 30 minutes). It does not by itself guarantee resistance to high-pressure water jets.

Question 2

What does IP68 mean?

Accepted Answer

IP68 means dust-tight (6) and protected against continuous immersion in water beyond 1 metre (8), under depth and duration conditions specified by the manufacturer. The exact depth and time vary by device, so check the maker's stated limits.

Question 3

What is IP69K?

Accepted Answer

IP69K means dust-tight (6) and protected against close-range, high-pressure, high-temperature water jets — steam cleaning and pressure washing (9K). The 9K water test comes from ISO 20653 and is common on automotive, industrial and food-processing equipment.

Question 4

What is the difference between IP67 and IP68?

Accepted Answer

Both are dust-tight. IP67 covers temporary immersion up to about 1 metre for 30 minutes, while IP68 covers continuous or deeper immersion beyond 1 metre under conditions set by the manufacturer. IP68 is the stronger water rating.

Question 5

What does the X in an IP rating such as IPX4 mean?

Accepted Answer

X is a placeholder meaning that characteristic was not tested or declared — it is not the same as 0 (no protection). IPX4 declares only the water rating (splashing) and makes no claim about dust; IP6X declares only the dust rating (dust-tight) and makes no claim about water.

Question 6

Is IPX4 waterproof?

Accepted Answer

No. IPX4 means protected against water splashing from any direction — it is splash-resistant, not waterproof. Immersion protection only begins at IPX7 (temporary immersion) and IPX8 (continuous immersion).

Question 7

Does a higher IP rating always mean better water protection?

Accepted Answer

Not always. A higher second digit does not automatically include the lower ones — for example, an immersion rating (IPX7 or IPX8) does not guarantee protection against high-pressure jets (IPX5 or IPX6). Devices that need both are given dual ratings such as IPX5/IPX8.

Question 8

What does IP54 mean?

Accepted Answer

IP54 means dust-protected (5 — limited, non-harmful dust ingress is allowed, but not enough to affect operation) and protected against splashing water from any direction (4). It is a common general-purpose rating for indoor and sheltered outdoor enclosures.

Code	Protection	Test detail
0	No protection No special protection against solid objects or dust.	No test object; no probe applied.
1	Objects ≥ 50 mm Protected against large solid objects — e.g. accidental contact by the back of a hand.	Test probe A: rigid 50 mm sphere, 50 N. Must not fully enter.
2	Objects ≥ 12.5 mm (fingers) Protected against objects such as fingers. The basis of the common ‘finger-safe’ IP2X.	Test probe B: 12.5 mm sphere and jointed test finger (12 mm × 80 mm), 10 N.
3	Objects ≥ 2.5 mm (tools) Protected against tools and thick wires.	Test probe C: 2.5 mm rod, 3 N — must not enter at all.
4	Objects ≥ 1.0 mm (wires) Protected against most wires, screws and fine tools.	Test probe D: 1.0 mm wire, 1 N — must not enter at all.
5	Dust-protected Dust may enter, but not in a quantity that interferes with operation or safety. Not fully dust-tight.	Talcum-powder chamber; vacuum may draw up to ~80× the enclosure volume. Pass = no harmful deposit.
6	Dust-tight No dust ingress at all — the strictest solids rating. Complete protection against contact with hazardous parts.	Talcum-powder chamber, Category 1 (vacuum applied). Pass = no dust observed inside.
X	Not specified No solids/dust rating has been declared. X is a placeholder — it does not mean ‘no protection’ (that is 0).	No first-numeral test performed or claimed.

Code	Protection	Test detail
0	No protection No protection against water.	No test required.
1	Vertical dripping water Protected against vertically falling drops (light rain straight down).	Drip box, ~1 mm/min for 10 min, specimen on a slow turntable.
2	Dripping water, tilted ≤ 15° Protected against vertical drops even when tilted up to 15°.	Drip box, ~3 mm/min, 4 tilt positions (2.5 min each).
3	Spraying water (≤ 60°) Protected against water sprayed at up to 60° from vertical.	Oscillating tube ±60° or shielded nozzle (Ø6.3 mm), ≥ 5 min.
4	Splashing water (any direction) Protected against splashing water from any direction.	Oscillating tube through the full arc or unshielded spray nozzle, ≥ 5 min.
5	Water jets Protected against low-pressure water jets from any direction.	Ø6.3 mm nozzle, 12.5 L/min, 2.5–3 m distance, ≥ 3 min.
6	Powerful water jets Protected against powerful water jets from any direction (e.g. heavy seas, deck hosing).	Ø12.5 mm nozzle, 100 L/min, 2.5–3 m distance, ≥ 3 min.
7	Temporary immersion (≤ 1 m) Protected against temporary immersion up to ~1 m for up to 30 minutes.	30 min; lowest point ≤ 1 m deep, top ≥ 150 mm below the surface.
8	Continuous immersion (> 1 m) Suitable for continuous immersion beyond 1 m, under conditions agreed with the manufacturer.	Depth and duration specified by the maker; more severe than 7.
9	High-pressure / high-temp jets (IPX9) Protected against close-range high-pressure, high-temperature spray-down (steam cleaning).	Added in IEC 60529 Amendment 2 (2013). 80 °C, 80–100 bar, 14–16 L/min, four angles (0/30/60/90°), 30 s each.
X	Not specified No water rating has been declared. X is a placeholder — it does not mean ‘no protection’ (that is 0).	No second-numeral test performed or claimed.

Letter	Meaning
A	Back of hand Protects people from reaching hazardous parts with the back of the hand. Probe: 50 mm sphere, 50 N (access level of first digit 1).
B	Finger Protects against finger access to hazardous parts. Probe: jointed test finger 12 mm × 80 mm, 10 N (access level of first digit 2).
C	Tool Protects against access with a tool. Probe: 2.5 mm rod × 100 mm, 3 N (access level of first digit 3).
D	Wire Protects against access with a wire. Probe: 1.0 mm wire × 100 mm, 1 N (access level of first digit 4).

Letter	Meaning
H	High-voltage apparatusIEC only Equipment is designated as high-voltage apparatus. Supplementary information only — does not change the ingress test.
M	Tested in motionIEC + ISO The water test was performed while the equipment’s movable parts were in motion.
S	Tested at standstillIEC + ISO The water test was performed while the equipment’s movable parts were stationary.
W	Weather conditionsIEC only Equipment is suitable for use under specified weather conditions, with additional protective features.

Code	Protection	Test detail
5K	Dust-protected (automotive) ISO 20653 equivalent of 5: limited, non-harmful dust ingress permitted.	Written 5K — there is no plain ‘5’ in ISO 20653. Uses Arizona A2 fine dust; maps to access level D (wire).
6K	Dust-tight (automotive) ISO 20653 equivalent of 6: no dust ingress.	Written 6K — there is no plain ‘6’ in ISO 20653. Uses Arizona A2 fine dust; maps to access level D (wire).

IP Code Calculator

First digit — solids & dust

Second digit — water

Additional letters (access to hazardous parts)

Supplementary letters

ISO 20653 — automotive (K) codes

Code	Protection	Test detail
4K	Splashing water, increased pressure Automotive higher-pressure version of 4 (e.g. water surging up when driving through a puddle).	ISO 20653. Designation example: IP34K.
6K	Strong jet, increased pressure Automotive higher-pressure version of 6 — a strong jet at increased pressure.	ISO 20653. ~10 bar (1000 kPa), ~75 L/min. Example: IP16KB.
9K	Steam-jet / high-pressure cleaning (IPX9K) Protected against close-range high-pressure, high-temperature steam-jet cleaning — the well-known IP69K.	ISO 20653 / DIN 40050-9. 80 °C, 80–100 bar, 14–16 L/min, four angles, on a turntable. Essentially the same test as IEC IPX9.