14
Rockwell Automation Publication 2100-IN012D-EN-P - September 2010
Chapter 1
General Information
ArcShield Rating Labels
MCC units that have the arc resistant rating will carry a rating label on the
vertical wireway door. This label serves as the arc resistant nameplate and provides
information on the arc resistant rating. There will also be labels on other parts
that need to be in place before operating an arc resistant MCC.
Figure 7 - ArcShield Labels
Series Number and Series
ID as Manufactured in the
United States
ARC RESISTANT EQUIPMENT
ACCESSIBILITY:
TYPE 2
ARC SHORT CIRCUIT CURRENT:
≤
65 kA
ARC DURATION:
≤
100 ms
OPERATIONAL VOLTAGE
:
≤
480 V
ARC FLASH HAZARD
DOORS AND COVERS MUST BE PROPERLY
CLOSED, LATCHED, AND SECURED.
EQUIPMENT MUST BE INSTALLED PER
MANUFACTURER’S INSTRUCTIONS. REFER TO
PUBLICATION 2100-IN012.
ONLY INSTALL ArcShield 100ms / 480V / 65kA
RATED UNITS IN THIS STRUCTURE.
EQUIPMENT WILL NOT FUNCTION AS
ARC RESISTANT IF ABOVE GUIDLINES
ARE NOT FOLLOWED.
FAILURE TO FOLLOW THESE GUIDELINES COULD
RESULT IN SEVERE INJURY OR DEATH.
41006-402-01 (1)
WARNING
PER IEEE C37.20.7-2007
ARC RESISTANT EQUIPMENT
ACCESSIBILITY
: TYPE 2
ARC SHORT CIRCUIT CURRENT
:
≤
65 kA
ARC DURATION
: DEVICE LIMITED
PROTECTIVE DEVICE
:
UL LISTED FUSES
CLASS L – FERRAZ-SHAWMUT A4BQ
≤
1200 A
CLASS R – ANY FUSE
≤
600 A
CLASS J – ANY FUSE
≤
600 A
UL LISTED MOLDED CASE CIRCUIT BREAKERS
ALLEN-BRADLEY – BULLETIN 140U, FRAME I, JD, or K
CUTLER-HAMMER – SERIES C, FRAME F, J, K, L, M, or N
WARNING
PER IEEE C37.20.7 2007
ARC FLASH HAZARD
THE ARC CONTAINMENT CAPABILITY OF THE MOTOR
CONTROL CENTER IS DEPENDENT UPON THE MAIN
PROTECTIVE DEVICE.
PROTECT ONLY WITH UL LISTED
PROTECTIVE DEVICE SPECIFIED ABOVE.
DOORS AND COVERS MUST BE PROPERLY CLOSED,
LATCHED, AND SECURED. EQUIPMENT MUST BE INSTALLED
PER MANUFACTURER’S INSTRUCTIONS.
REFER TO PUBLICATION 2100-IN012.
EQUIPMENT WILL NOT FUNCTION AS ARC RESISTANT IF
ABOVE GUIDELINES ARE NOT FOLLOWED.
FAILURE TO FOLLOW THESE GUIDELINES COULD RESULT IN
SEVERE INJURY OR DEATH.
41006-401-01 (1)
100 ms Arc Duration
Device Limited Rating
ATTENTION:
before adding new sections or
units to an existing CENTERLINE MCC.
Table 1 - Sections
Series
Letter
Scope
Description of Change
Date Implemented
in the U.S.
A
(1)
—
Original design
February 1971
B
(1)
All
Changed terminal blocks
November 1976
C
(1)
All
Elimination of external mounting channels
June 1979
D
(1)
All
Reverse fed 2192 and 2193
April 1981
E
(1)
All
Redesign
gasketing
October 1982
F
(1)
All
Modified top horizontal wireway pan to accept units with handle interlock in topmost space factor
October 1983
G
(1)
42K
42 k bracing-incorporates new bus support and cover
January 1985
G
(1)
65K
65 k bracing-incorporates new bus support and cover
July 1985
H
All
New hinge design
January 1986
J
All
Changed handle, operating mechanism, and circuit breaker to Cutler-Hammer series C, 150 A, 250 A, 400 A
frame
October 1986
K
All
Changed to new unit grounding system
May 1990
L
All
Changed to new 600...1200 A circuit breaker operating mechanism
February 1996
M
All
Changed to serpentine DeviceNet cabling system
May 2001
N
All
New design for 100,000 A bus bracing and begin use of right-hand sidesheet with integral mounting
flanges.
May 2009
(1) Replacement and renewal parts are no longer supported. For more information, contact Rockwell Automation LV MCC Technical Support at 1.440.646.5800 and follow the
prompts to Allen-Bradley>Low Voltage Motor Control Centers>Post Shipment Support.
