GE Aftermarket Catalog
Busway Short-Circuit Ratings
Spectra ® Series Busway Short-Circuit Ratings Plug-In and Feeder
Maximum Fuse Sizes for Increased Short-Circuit Protection
Max "L" Fuse Sizes For Increased Short-Circuit Rating
Amperage
Aluminum (kA) @
Copper (kA) @
Aluminum
Copper
@100 kA
@200 kA
3 Cycles
6 Cycles
1 Sec.
3* Secs.
3 Cycles
6 Cycles
1 Sec.
3* Secs.
1200 1 1200 1 1200 1 2000 1
800 1 800 1 800 1
225
225
Amperage
400
400
225
50
50
24
14
50
50
36
21
—
600
400
85
85
24
14
50
50
36
21
1200 1 2000 1 2500 1 2500 1 3000 1 4000 1 4000 1 4000 1
600
800
600
85
85
24
14
85
85
36
21
—
—
1000
800
100
100
42
24
85
85
36
21
—
800
1200
1000
100
100
50
29
100
100
51
29
—
1000
1350
1200
125
125
62
36
100
100
65
37
—
1200
1600
1350
150
150
84
49
100
100
76
44
— — —
1350
2000
1600
150
150
95
55
125
125
95
55
—
1600
2000
150
150
121
70
150
150
129
75
2000
2500
2500
200
200
132
76
150
150
162
107
1 Also 600J, 800T or 400R.
3000
200
200 169*
97
200
200 191*
110
4000
200
200 200*
140
200
200 200*
149
Maximum Fuse Sizes for Increased Short-Circuit Protection
5000
— — — — 200
200 200*
200
* Ratings based on calculated values
Max. Fuse Sizes For Increased Short-Circuit Rating
@100 kA
@200 kA
Spectra ® LowAmp Busway Plug-In and Feeder Bus
Amperage
Class J
Class T C lass R Class J
Class T C lass R
Aluminum 225
600
800
100
400
400
200
Aluminum (kA) @
Copper (kA) @
400
600
800
400
600
800
400
3 Cycles
1 Sec.
3 Secs.
3 Cycles
1 Sec.
3 Secs.
Amp Rating
600
600
800
600
600
800
400
225
30
11
6
30
17
10
800
600
800
600
600
800
400
400
42
17
10
30
17
10
Copper 225
600
50
28
16
42
25
15
600
800
200
400
400
200
800
50
50
29
50
42
24
400
600
800
200
400
400
200
600
600
800
400
600
800
400
800
600
800
600
600
800
400
Flex-A-Power ® Type DH Busway 2 Type DH Busway has been tested in accordance with NEMA test procedures, to a maximum short-circuit rating of 14,000 rms amperes symmetrical. When properly protected by a maximum 100 ampere UL listed Class K-1, K-5, or J fuses, the DH Busway may be applied to a system with a short-circuit available up to the UL listed short-circuit rating of the fuses.
2 The adjustable straight length is rated 10 kA.
Busway 6
Aftermarket Catalog
www.geelectrical.com
6-4
Prices and data subject to change without notice
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