JFL CLASS J
FAST-ACTING FUSES
Catalog Number JFL (1 - 600A) 600 Volts AC or Less
AMPERE RATINGS
JFL 600V
30
70
35
80
40
90
45
100
50
110
60
125
JFL SPECIFICATIONS
Fast-Acting
150
175
200
225
250
300
350
400
450
500
600
—
1
2
3
4
5
6
8
10
12
15
20
25
Voltage Rating:
Ampere Rating:
Interrupting Rating:
Current Limiting:
JFL - 600VAC
1 - 600 Amps
200,000 RMS Symmetrical Amps
Class J Fuse
EDISON JFL Class J fuses are among the most current lim-
iting fuses available. Their small physical size and high per-
formance characteristics makes Class J fuses ideal for any
space - limited application.
EDISON JFL fuses are best suited for the protection of non-
inductive loads such as resistive heating, and lighting cir-
cuits.
Agency Approvals:
UL Listed, Class J, Guide JDDZ, File E162363
CSA Certified HRCI-J per C22.2, No. 248.8
Self-Certified DC Ratings:
Voltage Rating:
JFL (1-30A) 200VDC
JFL (35-60A) 175VDC
JFL (70-600A) 300VDC
Interrupting Rating:
20,000 Amperes DC
BENEFITS:
• Space saving dimensions vs Class R.
• Fast-Acting design permits quick response for both over-
loads and shorts.
• Extremely current-limiting.
APPLICATIONS:
• Recommended for protection of non-inductive loads, such
as lighting and resistance heating circuits.
• For motor applications, refer to EDISON JDL.
RECOMMENDED FUSEBLOCKS:
Refer to page 137 in this catalog.
RECOMMENDED UPGRADE:
JDL.
EDISON
JFL
CROSS REFERENCE
BUSSMANN
GOULD
JKS
A4J
LITTELFUSE
JLS
20
JFL CLASS J FAST-ACTING FUSES
JDL CLASS J TIME-DELAY FUSES
DIMENSIONS
Cat No. JFL and JDL, Class J
Ampere
Rating
Range
1-30
35-60
70-100
110-200
225-400
450-600
Overall
Length
A
2-1/4
2-3/8
4-5/8
5-3/4
7-1/8
8
Max.
Dia.
B
13/16
1-1/16
1-1/18
1-5/8
2-1/8
2-5/8
Blade
Length
C
–
–
1
1-3/8
1-7/8
2-1/8
Barrel
Length
D
–
–
2-5/8
3
3-3/8
3-314
Blade
Thickness
E
–
–
1/8
3/16
1/4
3/8
Blade
Width
F
–
–
3/4
1-1/8
1-5/8
2
Mounting Hole Spacing
G
H
–
–
–
–
1/2
3-518
11/16
4-3/8
15/16
5-1/4
1
6
J
–
–
3/8
3/8
17/32
11/16
K
–
–
9/32
9/32
13/32
17/32
AVERAGE TIME/CURRENT CURVE
Cat. No. JFL (Amp) 600V
100A
200A
400A
600A
30A
60A
AMPERE
RATING
300
200
CURRENT LIMITATION TABLE**
JFL (600V)
Prosp.
Short
C.C.
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
150,000
200,000
Fuse Size
30
I
RMS
I
p
1
2
1
3
1
3
1
3
2
4
2
4
2
4
2
4
2
5
2
5
2
5
2
5
2
5
2
5
2
5
3
6
60
I
RMS
1
2
2
2
3
3
3
3
3
3
3
3
4
4
5
5
I
p
3
4
4
5
6
6
7
7
8
8
8
8
9
9
11
12
100
I
RMS
2
3
3
3
3
3
4
4
4
5
5
5
6
6
6
7
I
p
4
6
6
7
8
8
9
9
10
11
12
12
13
13
14
15
200
I
RMS
3
4
4
5
6
6
6
7
7
7
8
8
9
9
9
10
I
p
7
9
10
12
13
13
14
15
16
17
18
18
19
19
21
22
400
I
RMS
4
6
7
8
9
9
9
10
10
11
11
12
13
13
14
16
I
p
10
13
15
18
19
20
21
22
23
25
25
28
29
30
33
37
600
I
RMS
5
9
10
11
12
13
13
14
15
16
17
17
18
18
22
24
I
p
12
19
22
25
28
30
30
32
35
37
39
39
41
42
50
55
100
80
60
40
30
20
10
8
6
4
TIME IN SECONDS
3
2
PEAK LET-THROUGH CURRENT CURVES*
400,000
300,000
1
.8
INSTANTANEOUS PEAK LET-THRU CURRENT IN AMPS
B
JFL (600V)
AMPERE
RATING
600
400
200
100
60
30
1,000
2,000
3,000
4,000
5,000
6,000
8,000
10,000
20,000
30,000
40,000
50,000
60,000
80,000
100,000
200,000
.6
.4
.3
.2
200,000
100,000
80,000
60,000
50,000
40,000
30,000
20,000
.1
.08
.06
.04
.03
.02
10,000
8,000
6,000
5,000
4,000
3,000
2,000
A
2,000
3,000
4,000
6,000
8,000
10,000
800
1,000
.01
40
60
80
100
200
300
400
600
1,000
RMS SYMMETRICAL CURRENT IN AMPERES
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 X SYMM RMS AMPS)
* Curves test data obtained at 15% short-circuit power factor when possible.
** "Apparent Let-Thru Amperes" values are read from "Peak Let-Through Current Curves" and the peak current value divided by 2.3 Asymmetry Factor.
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