1 General Information

Series Identification for Units

This table gives a brief explanation of the series letter changes that have taken place since the original design of the CENTERLINE motor control center. Complete new series units with comparable features and options can be retrofitted into any series of structures as shown in the table on page 7. Units SeriesLetter Scope Description of Change Date Implemented in U.S. A
[1] [1] All sizesChanged terminal blocksNovember 1976C
[1] All sizesChanged handle mechanism to Cutler-Hammer/Westinghouse MCPsJune 1979D
[1] Size 5Changed from ITE to A-B 400A disconnectApril 1981E
[1] All sizesChanged from Bulletin 709 series K industrial starters to Bul. 500 line startersApril 1981FAll sizesRedesign of gasketing, wraparound, and unit support pan for Bulletin 700 lineOctober 1982GAll sizesRedesign of gasketing, wraparound, and unit support pan for Bulletin 500 lineOctober 1982HAll sizesChanged to new door, CB mechanism, and control stationApril 1984JSize 5Changed to Bulletin 500 series LOctober 1984Size 3Changed to new PCP 100A disconnectDecember 1988Size 6Changed to Bulletin 500 series B startersOctober 1988KSize 1-5 CB units and size 1-2 disc unitsChanged handle, operating mechanism, and industrial circuit breaker to Cutler-Hammer/Westinghouse Series C, 150A, 250A, and 400A frameOctober 1986L21A through 54AChanged to Bulletin 100 line contactors in 21A, 30A, and 45A SMC units and original design 24A, 35A, and 54A SMC unitsNovember 1989MAll sizesChanged to new unit grounding system and 600A, 800A, and 1200A bolted pressure switchMay 1990NAll sizesChanged to PCP 200A and 400A disconnect, rerated vacuum Bulletin 2112 and 2113 and new pilot device offeringsJanuary 1993P0.5 SF CB units 2103L, 2113, 2193External auxiliary on circuit breakersApril 1994QAll sizes and ratingsNew disconnect external auxiliary contacts and new 600A-1200A circuit breaker operating mechanismMay 1996RSMC unitsRedesign and upgrade of ratings for 24A-500A SMC-2 and SMC-PLUS units. Original design of SMC Dialog Plus units.August 1997 1200A 2193Redesign of 1200A, 2193F, and 2193M unitsNovember 1997800A 2193Changed circuit breakers to MDL FrameNovember 1998225A 2193FChanged circuit breakers from J Frame to F FrameOctober 1999T2000A 2193Changed to Flange Mounted Operating HandleNovember 2000All sizesChanged the Bulletin 800MR and Bul. 800T-PS pilot devices to Bulletin 800EsAll 1.5 space factor unitsChanged unit bottom plateUAll except 2100-SD1Changed to new Bulletin 1497 control circuit transformerJuly 20012100-SD1Changed smoke detector head and base componentsNovember 2001V2162Q, 2163QRedesign of 240-480V PowerFlex 70 and release of 600V PowerFlex 70April 20022162R, 2163ROriginal release of 34A-56A PowerFlex 700July 20022154H, 2155HOriginal release of SMC-3November 2002 [1]Replacement and renewal parts are no longer supported. Consult MCC Technical Support. —Original designFebruary 1971B

Unit Label Data

When communicating with Rockwell Automation about a particular Allen-Bradley motor control center, the catalog number or serial number and series letter are required to properly identify the equipment. Refer to publication 2100-5.0, Bulletin 2100 CENTERLINE Motor Control Centers Instruction Manual , for more information.Each unit has a nameplate located inside the unit on the bottom plate. See the figure below. Information on the unit nameplate includes:?Serial number?Series letter?Factory order number?Catalog string number?Unit location?System voltage

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