Cut Sheet
F-4
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EATON 2016 Arrow Hart Buyers Guide
SECTION
SECTION
F
NEMA rating (National Electrical Manufacturers Association)
The NEMA rating indicates the level of protection the device has against
water and dirt intrusion
NEMA enclosure rating systems
Protection from
Device locations
Indoors
Indoors or
outdoors
Outdoors with
external mechanisms
Limited amounts of falling dirt NEMA type 1
Limited amounts of falling dirt and dripping water NEMA type 2
Rain, sleet, falling dirt, windblown dust, damage from ice formation NEMA type 3
Rain, sleet, falling dirt, damage from ice formation NEMA type 3R
Rain, sleet, windblown dust, ice laden operation possible NEMA type 3S
Windblown dust and rain, splashing water, hose-directed water,
damage from ice formation
NEMA type 4
Corrosion, windblown dust and rain, splashing water, hose-directed water,
damage from ice formation
NEMA type 4X
Falling dirt and settling airborn dust, lint, fibers and dripping non-corrosive liquids NEMA type 5
Hose-directed water, entry of water during occasional short-term
limited depth submersion, damage from ice formation
NEMA type 6
Hose-directed water, entry of water during long-term limited depth submersion,
damage from ice formation
NEMA type 6P
Class I, Division 1, groups A,B,C or D hazardous locations
(as defined by NEC
®
, NFPA 70)
NEMA type 7
(commonly referred to
as explosion-proof)
Class I, Division 1, groups A,B,C or D hazardous locations
(as defined by NEC
®
, NFPA 70)
NEMA type 8
(commonly referred to
as oil-immersed)
Class II, Division 1, groups E, F and G hazardous locations
(as defined by NEC
®
, NFPA 70)
NEMA type 9
(commonly referred to
as dust-ignition-proof)
Meets applicable requirements of the Mine Safety & Health Administration,
30 CFR, part 18
NEMA type 10
Circulating dust, falling dirt, dripping non-corrosive liquids
NEMA type 12
NEMA type 12K
Dust, spraying of water, oil and non-corrosive coolant NEMA type 13
NEMA rating chart