EDS Packaged Drives are assembled in NEMA/UL Type 1, 3R, 4, 4X, 12 or 13 enclosures. Each enclosure type lends itself to a particular type of protection and environment. The enclosures detailed below do not normally protect electrical equipment from condensation, corrosion or contamination which may occur within the enclosure or enter via the conduit or unsealed openings. Users must make adequate provisions to safeguard against such conditions, and satisfy themselves that the equipment is properly protected. For further information on criteria associated with NEMA enclosure ratings, refer to NEMA Standards Publication NO. 250-1991.

-       NEMA/UL Type 1 enclosures are intended for indoor use primarily to provide a degree of protection against contact with the enclosed equipment in locations where unusual service conditions do not exist. The enclosures are designed to meet the rod entry and rust resistance design tests. Openings in the enclosure door or sides and/or fans on the door(s) or sides allow for free exchange of inside and outside air.

-       NEMA/UL Type 3Renclosures are typically used in outdoor applications for wiring and junction boxes. This style of enclosure provides protection against falling rain, sleet, snow, and external ice formation. Indoors they protect against dripping water. This style of enclosure does not have a gasket sealing surface. Some NEMA 3R models have hasps for padlocking.

-       NEMA/UL Type 3R Vented Disconnect EnclosuresVented Type 3R Disconnect Enclosures are designed to house electrical controls, drives, instruments, and components used in an outdoor environment to provide a degree of protection for the equipment inside the enclosure against the ingress of solid foreign objects (falling dirt); and to provide a degree of protection with respect to the harmful effects on the equipment due to the ingress of water (rain, sleet, snow). This design incorporates a rain cap that acts as a solar shield to minimize solar heat gain, a rain hood with filters for air intake, and cooling fans to control internal heat load. The enclosures are designed to house most standard disconnects and are available in three standard sizes (47"H x 25.38"W x 14"D, 53"H x 37.38"W x 16"D, 65"H x 37.38"W x 16"D)

-       NEMA/UL Type 4enclosures are used in many applications where an occasional wash‐down operation occurs or where machine tool cutter coolant is used. NEMA 4 enclosures also serve in applications where a pressurized stream of water will be used. NEMA 4 enclosures contain gaskets, and the door of the enclosure is clamped for maximum sealing. They have continuous hinges, mounting feet, and padlock hasps. NEMA 4 enclosures are available in sizes from small wall mounts to two‐door floor mount enclosure models.

-       NEMA/UL Type 4Xenclosures are made of stainless steel or high‐quality plastics. NEMA 4X enclosures are typically used in harsher environments than the standard NEMA 4 types. Applications where corrosive materials and caustic cleaners are used necessitate the use of a NEMA 4X enclosure. Applications include food, such as meat/poultry processing facilities, wherein total wash‐down operations using disinfectants are a necessity for safety. These operations occur repeatedly, such as in petro‐chemical facilities, including offshore petroleum sites. NEMA 4X is used when protection from the worst environments is required. NEMA 4X enclosures are available in sizes from small wall mounts to two‐door floor mount models.

-       NEMA/UL Type 12 enclosures are intended for indoor use primarily to provide a degree of protection against dust, falling dirt and dripping non-corrosive liquids. They are designed to meet drip, dust and rust resistance tests. There may be ventilation openings on the enclosure to allow free exchange of inside and outside air. Closed loop auxiliary cooling may be required for higher Hp ratings. Specifications calling for NEMA-12 ventilated enclosures should be reviewed with the factory.

-       NEMA/UL Type 13enclosures are intended for indoor use primarily, to provide a degree of protection against dust, spraying of water, oil, and non‐corrosive coolant.