7

Protection against spray

No damage incurred when sprayed with a jet of water

for 3 minutes from all directions, as per the diagram

on the left.

Protection level and test methods

Protection level

Level

Protection level and test methods

Protection level

Level

Protective construction

Expresses the degree of protective construction that guards the level of functionability of the switch against ingress of solid

objects, water, and oil. The standards are IEC529 (IEC: International Electrotechnical Commission) standards. IEC standards

determine the level of protection against both water and solid objects, but not against oil.

Protection against both water and solid objects

PROTECTIVE CONSTRUCTION

0—

No particular protection

4—

Protection against solid

objects exceeding

1mm .039inch in size.

A hard wire 1mm dia. .039 inch dia. across cannot

penetrate the inside.

5—

Protection against dust

The unit is left for 8 hours in an atmosphere in which

2kg of talcum powder per 1m3 is floating. No damage

incurred from talcum powder penetrating the inside.

6

Dust-proof

Protection againt dust

(dust does not penetrate)

The unit is left for 8 hours in an atmosphere in which

2kg of talcum powder per 1m3 is floating. The talcum

powder does not penetrate the inside.

3

Rain-proof

Protection against rain fall

No damage incurred when sprayed with water

continuously for 10 minutes at angles of up to 60°

from the perpendicular.

4

Foam-proof

Protection against flying foam

No damage incurred when sprayed with water

continuously for 10 minutes at angles of up to 180°

from the perpendicular across a wide area.

5

Spray-proof

6

Water proof

Protection against waves

Water does not invade the interior when sprayed with

a jet of water for 3 minutes from all directions, as per

the diagram on the left.

7

Corrosion-

proof

Protection against corrosion while

immersed in water

Water does not invade the interior during immersion

for 30 minutes at a depth of 1m 3.281ft..

Protection

against water

Protection against

solid objects

IP-

□ □

Note: 1. All of the tests cited above were conducted with the cord vent (conduit vent) tightly shut.

2. The above protective constructions are based on IEC standard but major differences may arise due to length of use and operating environment.

This should be thoroughly discussed and verified.

3. When the corrosion-proof model is immersed in water for 30 minutes or more, verify that no water has penetrated the inside before use.

3m

9.843ft.

Nozzle radius 6.3mm .248inch

Water pressure 30kP

3m

9.843ft.

Nozzle radius 12.5mm .492inch

Water pressure 100kP

1.0 .039 dia.