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3-10. Rack Line Fuse Requirements
Warning: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated branch circuit that applies to the rated output and duty cycle of the welding power source.
Product
Input Votage
(3-Phase)
220 VAC
230 VAC
400 VAC
CST 250
440 VAC
460 VAC
575 VAC
220 VAC
230 VAC
400 VAC
CST 280
440 VAC
460 VAC
575 VAC
230 VAC
Maxstar 200
460 VAC
* Full 250 amperes output from power source may cause rack line fuses to blow. Reduce output to 235 amperes.
** Full 250 amperes output from power source may cause rack line fuses to blow. Reduce output to 245 amperes.
{ Full 280 amperes output from power source may cause rack line fuses to blow. Reduce output to 235 amperes.
{ {Full 280 amperes output from power source may cause rack line fuses to blow. Reduce output to 245 amperes.
Notes
OM-2238 Page 18
Amperage Input At
Recommended Line
Rated Load Output,
Fuse Size (Amps)
50/60 Hz
32.1
30.5
18.2
16.4
14.7
11.6
34.2
33.5
19.7
18.1
17.4
14.3
18.4
8.9
Individual Fuse Part
No.
30*
199 795
30**
199 795
25
220 513
25
220 513
25
220 513
20
212 541
30{
199 795
30{{
199 795
25
220 513
25
220 513
25
220 513
20
212 541
30
199 795
15
220 514
Bussman Fuse Part
No.
KTK-R-30
KTK-R-30
KTK-R-25
KTK-R-25
KTK-R-25
KTK-R-20
KTK-R-30
KTK-R-30
KTK-R-25
KTK-R-25
KTK-R-25
KTK-R-20
KTK-R-30
KTK-R-15
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