power distribution - Siemens

Enclosed Circuit BreakersEnclosure TypesGeneralType 3RType 1ENCLOSEDCIRCUIT BREAKERS5Types 7, 9Types 5, 12, 12KType 1 — A general indoor, sheet-steelenclosure for use in normalatmospheres. Listed as serviceentrance equipment.Type 3R — An outdoor, sheet-steelenclosure providing protection againstdriving rain, sleet or snow. Listed asservice entrance equipment.Types 7, 9 — Cast aluminum enclosureclassified for explosion and fire hazard.Only enclosure for use in hazardouslocation. Class I; Group D–Class II;Groups E, F, and G–Class III.Types 4, 4X (not shown) — Stainlesssteel indoor or outdoor enclosuredesigned for use in areas where seriouscorrosion problems exist. They provide adegree of protection against windblowndust, rain, splashing water and hosedirectedwater. Meets NEMA Type 3, 4,4X, 12 and 13 requirements and UL 508Type 4 and 4X requirements.Types 5, 12 — A special-industry, sheetsteelenclosure for use in atmospherescontaining particles of lint, dust, dirt,sawdust and other foreign matter.Type 12K — A semi-dusttight sheetsteelenclosure. Listed as serviceentrance equipment.5-2Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog