An access probe, sphere of 50 mm, shall have adequate clearance from hazardous parts.

An object probe, sphere of 50 mm, shall not fully penetrate.

Access to hazardous parts with finger.

Solid foreign objects of > 12.5 mm.

A jointed test finger of 12 mm, 80 mm length, shall have adequate clearance from hazardous parts

An object probe, sphere of 12.5 mm, shall not fully penetrate.

Access to hazardous parts with a tool.

Solid foreign objects of > 2.5 mm.

An access probe of 2.5 mm shall not penetrate.

An object probe of 2.5 mm shall not penetrate at all.

Access to hazardous parts with a wire.

Solid foreign objects of > 1.0 mm.

An access probe of 1.0 mm shall not penetrate.

An object probe of 1.0 mm shall not penetrate at all.

Access to hazardous parts with a wire.

Dust (protected).

An access probe of 1.0 mm shall not penetrate.

Ingress of dust is not totally prevented, but dust shall not penetrate in a sufficient quantity to interfere with satisfactory operation of the apparatus or to impair safety.

Hazardous parts with a wire.

Dust (tight).

An access probe of 1.0 mm shall not penetrate.

No ingress of dust.

Non-protected.

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Vertically falling water drops.

Vertically falling drops shall have no harmful effects.

Vertically falling water drops when enclosure tilted up to 15°.

Vertically falling drops shall have no harmful effects when the enclosure is tilted at any angle up to 15° on either side of the vertical.

Spraying water.

Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects.

Splashing water.

Water splashed against the enclosure from any direction shall have no harmful effects.

Water jets.

Water projected in jets against the enclosure from any direction shall have no harmful effects.

Powerful water jets.

Water projected in powerful jets against the enclosure from any direction shall have no harmful effects.

The effects of temporary immersion in water.

Ingress of water in quantities causing harmful effects shall be prevented when the enclosure is immersed in 1m of water for 30 minutes.

The effects of continuous immersion in water.

Ingress of water in quantities causing harmful effects shall be prevented when the enclosure is continuously immersed in water under conditions which shall be agreed between manufacturer and user (>IPX7).