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Rockwell Automation Publication 2100-IN012D-EN-P - September 2010
Chapter 1
General Information
A label on the MCC with the ArcShield rating provides information in regard to
the accessibility level and arc fault ratings.
For more information about accessibility levels, performance, and testing
requirements, refer to IEEE standard C37.20.7, IEEE Guide for Testing Metal-
Enclosed Switchgear Rated up to 38 kV for Internal Arcing Faults.
MCCs with the ArcShield rating provide a reinforced structure and arc-
containment latches on all doors. To help protect you during an arc-fault, arc-
containment latches, when closed and latched properly, allow pressure relief and
help keep the doors from unlatching or detaching from the structure.
Nameplate Data
Each MCC section has a nameplate on the enclosure or vertical wireway door.
The nameplate includes:
•
catalog number/serial number.
•
series letter of section.
•
bus bar voltage and current rating.
•
section number.
•
UL and cUL certification marking.
•
UL registration number.
•
enclosure type.
Figure 1 - Section Nameplate
Section Number
UL and cUL Certification Marking
Catalog Number/Serial Number
Series Letter of Section
Bus Bar Voltage
and Current Rating
UL Registration Number
Enclosure Type
