Underwriters Laboratories, Inc.
(CUL 50, 508 and 870)
Canadian Underwriters Laboratories, Inc.
(CUL 50, 508 and 870)
| Intended | Intended Use and Description |
|---|---|
| Type 1: | Indoor use primarily to provide protection against contact with the enclosed equipment and against a limited amount of falling dirt. |
| Type 3: | Outdoor use to provide a degree of protection against wind blown dust and wind blown rain; undamaged by the formation of ice on the enclosure. (Gasketed screw cover.) |
| Type 3R: | Outdoor use to provide a degree of protection against falling rain; undamaged by the formation of ice on the enclosure. (Drip Shield screw cover.) |
| Type 4: | Either indoor or outdoor use to provide a degree of protection against falling rain, splashing water, hose directed water; undamaged by the formation of ice on the enclosure. |
| Type 4X: | Either indoor or outdoor use to provide a degree of protection against falling rain, splashing water, hose directed water; undamaged by the formation of ice on the enclosure; resists corrosion. |
| Type 12: | Indoor use to provide a degree of protection against dust, dirt, fiber flyings, dripping water, and external condensation of non-corrosive liquids. |
| Type 13: | Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and flyings; and against the spraying, splashing, and seepage of water, oil, and non-corrosive coolants. |
This material reproduced with the permission from Underwriters Laboratories, Inc., Standard for Safety Cabinets and Boxes, UL 50, Copyright 1985, and Industrial Control Equipment, UL 508, copyright 1984 by Canadians Underwrite Laboratories, Inc.
This material reproduced with the permissions from Canadian Underwriters Laboratories, Inc., Standard for Safety Cabinets and Boxes, UL 50, Copyright 1985, and Industrial Control Equipment, CUL 508, Copyright 1993 by Canadian Underwriters Laboratories, Inc.
Underwriters Laboratories, Inc., (UL) shall not be responsible to anyone for the use of or reliance upon a UL standard by anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of connection with the use or interpretation of, or reliance upon a UL standard.
Canadian Underwriters Laboratories, Inc., (UL) shall not be responsible to anyone for the use of or reliance upon a CUL standard by anyone. CUL shall not incur any obligation or liability for damages, including consequential damages, arising out of or connection with the use interpretation of, or reliance upon a CUL standard.
Underwriters Laboratories, Inc. Standard for Safety Cabinets and Boxes, CUL 50, and standard for safety for Industrial control Equipment, CUL 508
E-Box classifications of Electrical Enclosures UL and CUL approved are as follows:
Nema Type 1, 3, 3R, 4, 4X, 12, 13 and fiberglass enclosures.