Protection of persons from accidental large area direct contact with active or internal moving parts (e.g. hand contact), nut no guarding against intentional access to such parts. Protection of the object from access of solid foreign matter larger than Ø50mm.
2
Protection against
medium foreign bodies
Protection of persons from finger contact with active or internal moving parts. Protection of the object from access of solid foreign matter larger than Ø12mm.
3
Protection against
small foreign bodies
Protection of persons from contact with active or internal moving parts with tools, wires or similar foreign matter thicker than Ø2.5mm. Protection of the object from access of solid foreign matter larger than Ø2.5mm.
4
Protection against
granular foreign
bodies
Protection of persons from contact with active or internal moving parts with tools, wires or similar foreign matter
thicker than or > than Ø1mm.
5
Protection against
deposits of dust
Total protection of persons from contact with voltage carrying or internal moving parts. Protection of the object from harmful deposits of dust. Ingress of dust is not completely prevented, but dust is prevented from entering in a quantity that would impair the functioning of the object.
6
Protection against
ingress of dust
Total protection of persons from contact with voltage carrying or internal moving parts. Protection of the object from ingress of dust.
2nd digit
symbol
protection
explanation
0
No protection
-
1
Protection against water dripping
vertically
Water drops falling vertically must not have any harmful
effect.
2
Protection against water dripping
up to 15°
Water drops falling at any angle up to 15° from vertical
must not have any harmful effect.
3
Protection against
spray water
Water hitting the object at any angle up to 60° from
vertical must not have any harmful effect.
4
Protection against
splash water
Water splashing against the object from all directions
must not have any harmful effect
5
Protection against
jet water
A jet of water aimed against the object from all directions
must not have any harmful effect.
6
Protection against
flooding
Water as temporary flooding, as in heavy seas, must not
enter the object in any harmful quantity.
7
Protection against
dipped state
If the object is dipped into water (150mm to 1000mm), under the defined conditions of pressure and time, water must not enter the object in any harmful quantity.
8
Protection during
submerged state
If the object is submerged in water under defined extreme conditions, water must not enter the object in any harmful quantity.
From the Chart, IP 54 would indicate equipment that had:
1st digit
2nd digit
5
Total protection of persons from contact with voltage carrying or internal moving parts. Protection of the object from harmful deposits of dust. Ingress of dust is not completely prevented, but dust is prevented from entering in a quantity that would impair the functioning of the object.
4
Water splashing against the object from all directions must not have any harmful effect
Electronic Temperature Instruments Ltd Dominion Way Worthing West Sussex BN14 8NW
Telephone* 01903 202151 - Fax 01903 202445 - email VAT Reg. GB 397 5525 04 Company Reg. 1746462
*Calls may be monitored for training purposes
