2-2
Unit Description
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OFF
ON
20A
O
OFF
ON
20A
O
OFF
ON
20A
O
OFF
ON
20A
O
NBB-20V
ON
OFF
DEF
RDY
BRANCH
A
BRANCH
B
CURRENT
USAGE
BRANCH
A
100%
10%
CURRENT
USAGE
BRANCH
B
100%
10%
14
1
2
3
3
4
4
5
6
7
8
9
10
11
12
13
Figure 2.1: NBB Face Panel Components (Model NBB-20VD20-2 Shown)