MECHANICAL CONNECTORS
Aluminum and Copper Neutral Bars
Types NA and NC
• Aluminum Neutral Bars are manufactured from high strength aluminum alloy • Copper Neutral Bars are manufactured from high strength copper • For use in a variety of neutral and grounding applications • Aluminum Neutral Bars are tin plated • Screws are made of mild steel and plated • Available with green chromate Robertson head set screws for visual identification of grounding locations • Aluminum Neutral Bars are dual rated for copper or aluminum conductors • Copper Neutral Bars are for copper conductors only • UL 467 listed for grounding • UL recognized per UL 486 A-B for power
W
HOLE SPACING
H
L
Aluminum Neutral Bars CATALOG NUMBER CONDUCTOR RANGE
FIGURE DIMENSIONS (IN.)
NUMBER OF CIRCUITS
TOTAL NUMBER OF HOLES
MOUNTING HOLE POSITION
HOLE SPACING
L
W
H
NA-401* NA-402* NA-403* NA-404* NA-405* NA-406* NA-407* NA-408* NA-409* NA-410* NA-411* NA-412* NA-413* NA-414* NA-415* NA-416 +NA-417 +NA-418 +NA-419
2 4 5 6 4 5 5 6 7 9
3 5 6 7 6 7 7 8 9
.95
.33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .33 .38
.44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .44 .50 .75 .75 .75
.31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .31 .40 .60 .60 .60
2 3 3 4
1.57 1.88 2.25 1.88 2.25 2.25 2.56 2.87 3.50 3.81 4.43 5.37 6.93
1 & 4 1 & 7 2 & 6 4 & 7 3 & 7
14 - 4
11 12 14 17 22
1 & 11 1 & 12 1 & 14 1 & 17 1 & 22
10 12 15 20
190
190
60.00
-
14 - 2
10
12
4.83 1.75 2.95 4.75
3 & 11
2 3 6
3 5 8
63
2
14 - 2/0
.63 .63
2 & 4 1 & 8
* Suffix catalog number with“-G”for green chromate Robertson head set screw +Connectors are provided with 3/16”socket head aluminum set screws
Copper Neutral Bars CATALOG NUMBER CONDUCTOR RANGE
NUMBER OF CIRCUITS
TOTAL NUMBER OF HOLES
FIGURE DIMENSIONS (IN.)
MOUNTING HOLE POSITION
HOLE SPACING
L
W
H
NC-420* NC-421* NC-422* NC-423* NC-424* NC-425* NC-426* NC-427 NC-428
4 5 6
6 7 8
1.94 2.25 2.56 4.43 4.74 4.74
.31 .31 .31 .31 .31 .31 .31 .38 .38
.44 .44 .44 .44 .44 .44 .44 .50 .50
.31 .31 .31 .31 .31 .31 .31 .40 .40
1 & 6 1 & 7 1 & 8
14 - 4
12 13 13
14 15 15
1 & 14 3 & 13 6 & 11
190
190
60.00
-
3 6
5 8
2.00 3.25
1 & 5 2 & 7
14 - 2
* Suffix catalog number with“-G”for green chromate Robertson head set screw
198
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