|Tramec Gearboxes for America Distributor OEM USAa|
|Protection Against Solids||Protection Against Liquids|
|0||No Protection against solids.||0||No Protection against liquids.|
Protection from solid foreign bodies of diameters greater than 50mm
i.e. Accidental contact by the hand.
|1||Protection from vertical drops of liquid. (condensation).|
Protection from solid foreign bodies of diameters greater than 12mm
i.e. Accidental contact by fingers.
|2||Protection from vertical drops of liquid from 15 degrees off of top center.|
Protection from solid foreign bodies of diameters greater than 2.5mm
i.e. wire, tools.
|3||Protection from liquid sprinkled from 60 degrees of top center.|
Protection from solid foreign bodies of diameters greater than 1mm.
i.e. fine wire, small tools
|4||Protection against jets of water from any direction.|
|5||Protection from the ingress of dust. No harmful deposits.||5||Protection against water projected by a nozzle from any direction.|
|6||Complete protection from the ingress of dust.||6||Protection against water projection similar to sea waves.|
|7||Protection against the effects of immersion.|
Ingress Protection Rating, or occasionally referred to as International Protection Rating, is a system of two digits followed by the letters IP and is standardized on the nameplates of IEC metric frame motors and occasionally NEMA frame motors seeking a standard international rating classification.
This standard provides more informative description of protection from dust or liquids than various obtuse marketing terms such as dust proof, water resistant, air-tight, and so on.
The IP rating system is also used on a wide variety of electrical and mechanical devises such as electrical plugs, and other components. The IP system is not expressed as a guarantee for use but a reference for design & application.
IP55, IP56, IP65, IP66, IP67, IP54 are common protection levels for IEC metric motors in Europe and America. The table above is designed to help you understand the meaning of the codes. The first number signifies protection against solids, the second number for liquids.
IEC refers to the International Electrotechnical Commission. For more detailed information regarding IEC standards and definitions, please visit their website via this link.
Users familiar with the NEMA system of Enclosure Standards for motors can be confused with the more precise IP system for I.E.C. type motors.