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CENTERLINE

®

Motor Control Centers Bulletin 2400 Application-Rated Units

Motor Control Centers - 5071 Seismic Applications NEMA Enclosure Type Descriptions Service and Storage Conditions

CENTERLINE MCCs meet the requirements for Uniform Building Code (UBC) Zone 4 seismic applications. Rollout Drive construction (Bulletins 2162P and 2163P) are not seismic rated. NEMA Type 1:
Type 1 units and sections 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. The enclosure is sheet steel, treated to resist corrosion.

NEMA Defined

NEMA—National Electrical Manufacturers Association.

NEMA Class

NEMA Type 1 with gasketed doors (sometimes referred to as 1G) : The following is a description of Class I, as paraphrased from NEMA standard ICS 3-1993: class I motor control centers shall consist of mechanical groupings of combination motor control units, feeder tap units, other units, and electrical devices arranged in a convenient assembly. They include connections from the common horizontal power bus to the units. They do not include interwiring or interlocking between units or to remotely mounted devices, nor do they include control system engineering. Only diagrams of the individual units are supplied.
Type 1 with gasketed unit doors are completely gasketed around the perimeter of the unit doors. All gasketing is closed cell neoprene. NEMA Type 3R:
Non-walk-in front mounted only. Door-within-a-door construction. Type 3R units and sections are intended for outdoor use, primarily to provide a degree of protection against falling rain and to avoid damage from the formation of ice on the enclosure. They are designed to meet rod entry, rain, external icing, and rust resistance design tests. They are not intended to provide protection against conditions such as dust, internal condensation, or internal icing.

NEMA Type

NEMA Type 1 vented (with or without gasketed doors)IP20NEMA Type 1 vented with filters (with or without gasketed doors)IP30NEMA Type 1 non-vented (without gasketed doors)IP40NEMA Type 1 with drip hood = NEMA Type 2 (with or without gasketed doors)IP41NEMA Type 3RIP44NEMA Type 12 without bottom platesIP53NEMA Type 12 with bottom platesIP54NEMA Type 4IP65 Class I motor control centers can be provided in NEMA Type A or B construction: NEMA Type 4:
Non-walk-in front mounted only. Door-within-a-door construction. Type 4 units and sections are designed for indoor and outdoor use, primarily to provide protection against windblown dust and rain, splashing water, and hose-directed water. They are also designed to remain undamaged by the formation of ice on the enclosure. They are designed to meet hosedown, external icing, rod entry, and rust-resistance design tests. The enclosures are not designed to protect against internal condensation or internal icing.

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Type A—User’s power and control connections are made directly to the device within the unit.

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Type B—Terminal blocks are supplied for user’s control termination in unit insert. .

NEMA/IEC Enclosure Comparison

Classification of Degrees of Protection Provided by Enclosures. The comparison is based on data from tests conducted on the Bulletin 2100 enclosures and the NEMA enclosure type test requirements, which meet or exceed the IEC enclosure classification designation test requirements (i.e., the comparison is for Bulletin 2100 enclosures only) The following table is a comparison of Allen-Bradley Bulletin 2100 and 2400 NEMA enclosure type numbers to IEC Standard 60529, NEMA Type 12
[1] :
Type 12 enclosures are intended for indoor use, primarily to provide a degree of protection against dust, falling dirt, and non-corrosive dripping liquids. They are designed to meet drip, dust, and rust resistance tests. They are not intended to provide protection against conditions such as internal condensation. [1]This publication refers to standard NEMA Type 12 design (i.e., standardsheet steel). For stainless steel NEMA Type 12 enclosures, Contact your lo-cal Rockwell Automation Sales Office. CENTERLINE MCCs conform to NEMA standard ICS I-1993 for service and storage conditions. All CENTERLINE MCCs should have an ambient operating temperature above 0°C but shall not exceed 40°C. If the equipment is stored, the ambient temperature shall be above -30°C but shall not exceed 65°C. In addition, CENTERLINE MCCs have an altitude class 2 km. The altitude class 2 Km designates equipment for installation where the altitude does not exceed 2,000 meters (6,600 feet). For installations above 2,000 meters, consult the your local Rockwell Automation Sales Office for derating requirements. x -EN-P, The Planning and Installation Manual for DeviceNet .The Bulletin 2100 DeviceNet system (power supply unit, built-in cabling system, unit cables, etc.) is UL and cUL listed and meets the requirements of a class 1 power limited circuit (in Canada, class 1 extra-low-voltage power circuit). Per NEC, this circuit is supplied from a source that has a rated output of not more than 30 volts and 1000 volt-amperes. The power supply unit has an 8A, 24V output and the DeviceNet cabling is rated 8A, 600V. See NEC Article 725 for more detailed information.Refer to publication 2100-CA001 CENTERLINE Motor Control Centers Publication

DeviceNet™ Products

, for DeviceNet and IntelliCENTER MCC specifications.

DeviceNet

Look for the DeviceNet logo throughout this book to find units and options that are DeviceNet ready for use in the IntelliCENTER or Bulletin 2100 DeviceNet MCCs. The components used in these units are DeviceNet compatible and ODVA certified. Also, the installation conforms to the rules and guidelines of

4Publication 2400-CA001B-EN-P—September 2005