Description
5
Compact Size
The 800A, 1200A and 2000A frame sizes have a common
width of 15 1/2 inches, a common depth of only 12 l/8 inches,
common bus center lines, and a common mounting foot-
print. This compact, shallow-depth (even with drawout break-
ers) permits stacking of six 800 ampere, 1200 ampere or four
2000 ampere breakers in a standard
switchboard. This compact packaging is made possible by
the insulated-encased construction and thermal performance
of the SB breaker. Even when operated at 100% of the frame
rating, no additional ventilation is required for the 800A,
1200A and 2000A frames. Detailed outline drawings of the
breakers and drawout elements are included in the Outline
Dimensions section, pages 82-93.
Example: Six 800A Siemens SB Encased Systems Breakers
can be stacked in a 90-inch switchboard
Possible number of 800A and 2000A Frame Sizes in a 90-
inch Switchboard
Courtesy of NationalSwitchgear.com
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