RECOMMENDED FUSE USAGE
Class J Blocks (600V) . . . . . . .use with AJT, A4J
➤600VAC:
30A, 60A, 100A,
200A, 400A, 600A
➤Withstand rating:
200kA
Ratings
CLASS J FUSE BLOCKS
Ferraz Shawmut Class J Fuse Blocks accommodate
all Class J fuses. A choice of screw, pressure plate,
box and special order stud connectors fit a wide
range of stranded or solid copper or aluminum wire.
Insulators are either molded glass-filled polycar-
bonate (GFPC) or phenolic with verified dielectric
strength in excess of 2500V. 30 and 60A fuse blocks
feature a unique adder block which can be snapped
onto 1-, 2- or 3-pole blocks to form multi-pole
segmented blocks of as many poles as desired. All
fuse clips are made of high conductivity tin-plated
copper, with a choice of spring reinforced or non-
spring reinforced clips in 30A and 60A. Clips 100A
and above are spring reinforced.
➤All fuse blocks meet
the requirements of
UL Std. 512
➤UL Listed,
Guide IZLT, File E52283
➤CSA Certified
Class 6225, File 32169
Approvals
Clip & Connector Types
30A & 60A CLIPS
SPRING
REINFORCED
NON-SPRING
REINFORCED
CONNECTORS
NON-SPRING
REINFORCED:
30A & 60A BOX
30A SCREW
30A PRESSURE
PLATE
CONNECTORS
SPRING
REINFORCED:
30A & 60A BOX
30A SCREW
30A PRESSURE
PLATE
CONNECTORS
SPRING
REINFORCED:
100A BOX
200A BOX
SIDE-CLIP
400A BOX
SIDE-CLIP
CONNECTORS
SPRING
REINFORCED:
400A BOX
IN-LINE CLIP
600A BOX
IN-LINE CLIP
H 6
CLASS J 600 VOLT / FUSE BLOCKS
600 Volt, 30, 60 & 100 Ampere Class J Fuse Blocks
CATALOG NUMBER
CONNECTOR TYPE OF CLIP CONNECTOR
AMPERE WIRE NON-SPRING SPRING FIG. TORQUE
RATING POLES TYPE RANGE REINFORCED REINFORCED In - lb
ADDER 60300J 60305J 1
1 BOX Al/Cu 60301J 60306J 2 35
2 #2-14 60302J 60307J 3
3 60303J 60308J 4
ADDER 60310J 60315J 1
30 1 SCREW Cu 60311J 60316J 2 20
GFPC 2 #10-14 60312J 60317J 3
INSULATOR 3 60313J 60318J 4
ADDER 60320J 60325J 1
1 PRESSURE Cu 60321J 60326J 2 20
2 PLATE #10-14 60322J 60327J 3
3 60323J 60328J 4
ADDER - 60355J 1
1 BOX Cu* - 60356J 2 35
2 #4-14 - 60357J 3
3 - 60358J 4
ADDER 60600J 60605J 1
1 BOX Al/Cu 60601J 60606J 2 45
60 2 #2-14 60602J 60607J 3
GFPC 3 60603J 60608J 4
INSULATOR ADDER - 60655J 1
1 BOX Cu* - 60656J 2 45
2 #4-14 - 60657J 3
3 - 60658J 4
1 BOX Al/Cu - 61036J 5
100 2 2/0-#6 - 61037J 6 120
PHENOLIC 3 - 61038J 7
INSULATOR 1 BOX Cu* - 61006J 5
2 2/0-#12 - 61007J 6 50
3 - 61008J 7
Note: To convert 30A or 60A adder pole to single pole, use end barrier #U09617.
* Fuse blocks have copper box connectors and clips and are for copper wires only. These are specifically designed with the same
coefficient of expansion as copper wire for improved heat cycling and meet or exceed OEM “no aluminum” specifications.
30A and 100A figures are standard dimension fuse blocks. See also 30 A and 100A space-saving “SJ” Series.
Recommended mounting screws for all 30A, 60A and 100A fuse blocks: 1/4” (.250” dia.)
Figure 5 Figure 6 Figure 7
Figure 1 Figure 2 Figure 3 Figure 4
H
H 7
CLASS J 600 VOLT / FUSE BLOCKS
CLASS J 600 VOLT / FUSE BLOCKS
Recommended mounting screws:
All 200A, 400A & 600A - 5/16” (.313” dia.)
600 Volt, 200, 400 & 600 Ampere Class J Fuse Blocks
* Not UL Listed or CSA Certified
** Fuse blocks have copper box connectors and clips and are for copper wires only. These are specifically designed with the
same coefficient of expansion as copper wire for improved heat cycling and meet or exceed OEM “no aluminum” specifications.
CONNECTOR CATALOG N0. CONNECTOR
AMPERE WIRE SPRING FIG. TORQUE
RATING POLES TYPE RANGE REINFORCED In - lb
1 BOX Al/Cu 62001J 1 375
3 SIDE-CLIP 350kcmil-#6 62003J 2
1 BOX Cu** 62051J 1 275
3 SIDE-CLIP 350kcmil-#6 62053J 2
1 BOX* AL/Cu 64001J 3 375
3 SIDE-CLIP 1000-250kcmil 64003J 4
1 BOX AL/Cu 64031J 5 275
3 IN-LINE CLIP (2) 350kcmil-#4 64033J 6
1 BOX* Cu** 64051J 3 375
3 SIDE-CLIP 1000-250kcmil 64053J 4
1 BOX Cu** 64061J 5 275
3 IN-LINE CLIP (2) 350kcmil-#6 64063J 6
1 BOX Al/Cu 6631J 7 500
3 IN-LINE CLIP (2) 500kcmil-#4 6633J 8
1 BOX Cu** 6661J 7 375
3 IN-LINE CLIP (2) 500kcmil-#4 6663J 8
200
PHENOLIC
INSULATOR
400
PHENOLIC
INSULATOR
600
PHENOLIC
INSULATOR
Figure 1 Figure 2
Figure 5 Figure 6
Figure 3 Figure 4
Figure 7 Figure 8
H 8
