Lighting theory

Protection classes

Our statements on the resistance of the luminaires to the ingress of dust, solid foreign bodies and water are made in accordance with EN 60598 / VDE 0711. The respective degree of protection IP (International Protection) is indicated on the luminaire by the marking system according to IEC 529.


Protection classes 1st code number: Protection against solid foreign objects

IP 1x · Protection against ingress of solid objects ≥ 50 mm

IP 2x · Protection against ingress of solid objects ≥ 12 mm

IP 3x · Protection against ingress of solid objects ≥ 2.5 mm

IP 4x · Protection against ingress of solid objects ≥ 1 mm

IP 5x · Dust protected

IP 6x · Dust-tight

Protection classes 2nd code number: Water protection

IP x1 · Protection against vertically dripping water

IP x2 · Protection against drops of water falling at angles of up to 15°

IP x3 · Protection against spray water falling at angles of up to 60°

IP x4 · Protection against splash water

IP x5 · Protection against water jets

IP x6 · Protection against strong water jets

IP x7 · Protection against occasional immersion

IP x8…m · Protection against continuous immersion