CONTROL PANELS

In its simplest terms, an electrical control panel is a combination of electrical devices which use electrical power to control the various mechanical functions of industrial equipment or machinery. An electrical control panel includes two main categories: panel structure and electrical components. The structure of an electrical control panel is a combination of an enclosure and a back panel.
The enclosure is a metal box which varies in size and is typically made of aluminum or stainless steel. The number of doors (usually one or two) needed on the enclosure determines its size in most industrial applications. The enclosure will come with a UL safety rating (508A is typical) an IP rating, and/or a NEMA classification. These listings help users determine properties such as:

INDOOR/OUTDOOR USE
WATERPROOF/WATER RESISTANCE
DUST/SOLID CONTAMINANTS PROOFING
HAZARDOUS CONDITIONS RATING
EXPLOSION-PROOF RATING
These various classifications should be printed on a metal plate and attached to the enclosure for easy identification and reference.

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