Drive Fuse DFJ
High Speed Fuses 1 to 600A
Class J 600 Volt
Combine the performance of high speed
semiconductor fuses and the convenience of Class J
branch circuit fuses in one package.
The new Cooper Bussmann Drive Fuse will provide
maximum protection for AC and DC drives and controllers
and meet NEC branch circuit protection requirements. The
2
Drive Fuse has the lowest I t of any branch circuit fuse to
protect power semiconductor devices that utilize diodes,
GTOs, SCRs and SSRs.
General Information:
Easily coordinated with existing and new variable speed
drives and electronic controllers.
Standard Class J dimensions allowing the use of readily
available fuse blocks, holders, and switches.
Allows the lowest let-thru energy of any branch circuit
overcurrent protective device.
Dimensional Data 70-600A
Catalog Symbol: DFJ
High Speed Fuse
Current-Limiting
4.63"
Ampere Rating: 1 to 600A ( 0.03)
3.63"
Voltage Rating: 600Vac (or less), 450Vdc (or less)
1.13"
.75"
2.63"
Interrupting Rating: 200,000A RMS Sym., 100,000A dc
Agency Information:
1"
.28" .13"
UL Listed, Std. 248-8, Class J, Guide JDDZ, File E4273 .43"
CSA Certified, C22.2 No. 248.8, Class 1422-02, File 53787 70A to 100A
5.75"
( 0.03)
Catalog Numbers (Amps)
DFJ-1 DFJ-15 DFJ-70 DFJ-225 4.38"
1.13"
3.0"
DFJ-2 DFJ-20 DFJ-80 DFJ-250
.28"
110A to
DFJ-3 DFJ-25 DFJ-90 DFJ-300
1.63"
200A
DFJ-4 DFJ-30 DFJ-100 DFJ-350
1.38" .19"
.43"
DFJ-5 DFJ-35 DFJ-110 DFJ-400
DFJ-6 DFJ-40 DFJ-125 DFJ-450
7.13"
DFJ-8 DFJ-45 DFJ-150 DFJ-500
( 0.03)
DFJ-10 DFJ-50 DFJ-175 DFJ-600
5.25"
DFJ-12 DFJ-60 DFJ-200
3.38"
.41"
225A to
1.63"
2.11"
400A
Dimensional Data 1-60A
.58" 1.88"
.25"
2.25
8.0"
0.50
( 0.03)
0.81
6.0"
3.75"
.53"
450A to
2"
2.5"
600A
2.38
0.63
.74" 2.13" .38"
1.06
Form No. DFJ
Page 1 of 3
SB06384
4-10-07 Data Sheet: 1048Drive Fuse DFJ
High Speed Fuses 1 to 600A
Class J 600 Volt
Time-Current Characteristic CurvesAverage Melt
Form No. DFJ
Page 2 of 3
Data Sheet: 1048
SB06384
4-10-07