panel)
First Digit Second Digit
Protection against contact and ingress of
solid objects
Protection against ingress of water
0 No protection 0 No protection
1 Protected against ingress solid objects
with a diameter of more than 50 mm. No
protection against deliberate access, e.g.
with a hand, but large surfaces of the
body are prevented from approach.
1 Protection against dripping water falling
vertically. No harmful effect must be produced
(vertically falling drops).
2 Protected against penetration by solid
objects with a diameter of more than 12
mm. Fingers or similar objects prevented
from approach.
2 Protection against dripping water falling
vertically. There must be no harmful effect
when the equipment (enclosure) is tilted at an
angle up to 15° from its normal position (drops
falling at an angle).
3 Protected against ingress of solid objects
with a diameter of more than 2.5 mm.
Tools, wires etc. with a thickness of more
than 2.5 mm are prevented from
approach.
3 Protection against water falling at any angle up
to 60° from the vertical. There must be no
harmful effect (spray water).
4 Protected against ingress of solid objects
with a diameter of more than 1 mm.
Tools, wires etc. with a thickness of more
than 1 mm are prevented from approach.
4 Protection against water splashed against the
equipment (enclosure) from any direction.
There must be no harmful effect (splashing
water).
5 Protected against harmful dust deposits.
Ingress of dust is not totally prevented
but the dust must not enter in sufficient
quantity to interface with satisfactory
operation of the equipment. Complete
protection against contact.
5 Protection against water projected from a
nozzle against the equipment (enclosure) from
any direction. There must be no harmful effect
(water jet).
6 Protection against ingress of dust (dust
tight). Complete protection against
contact.
6 Protection against heavy seas or powerful
water jets. Water must not enter the equipment
(enclosure) in harmful quantities (splashing
over).
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