Grieve Corporation CLASS K User Manual
CLASS H, K & R 250 & 600 VOLT/FUSE BLOCKS
CLASS H, K AND R FUSE BLOCKS
Ferraz Shawmut Class H, K and R Fuse Blocks
accommodate all Class H, K and R 250 and 600V
power 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
polycarbonate (GFPC) or phenolic with verified
dielectric strength in excess of 2500V. 30, 60
and 100A 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.
RECOMMENDED FUSE USAGE
Class R Blocks (250V). . . . . . . . use with A2D-R, A2K-R, TR-R
Class R Blocks (600V). . . . . . . . use with A6D-R, A6K-R, TRS-R
Class H & K Blocks (250V) . . . . use with OT, RF, A2Y types 1 & 3
OTN, CRN, NRN
Class H & K Blocks (600V) . . . . use with OTS, RFS, A6Y types 1 & 3
CRS, NRS
Clip & Connector Types
30A & 60A CLIPS
SPRING
REINFORCED:
CLASS R
CONNECTORS
NON-SPRING
REINFORCED:
30A & 60A BOX
CONNECTORS
SPRING
REINFORCED:
30A & 60A BOX
Ratings
250VAC:
➤
30A, 60A, 100A,
200A, 400A, 600A
600VAC:
➤
30A, 60A, 100A,
200A, 400A, 600A
Short Circuit
➤
Current Ratings:
250 & 600VAC
w/class H fuses - 10kA
w/class K fuses - 50kA
w/class R fuses - 200kA
CONNECTORS
SPRING
REINFORCED:
100A BOX
Approvals
All fuse blocks meet
➤
the requirements of
UL Std. 512
UL Listed,
➤
Guide IZLT, File E52283
UL Recognized
➤
Component
Guide IZLT2, File E52283
CSA Certified
➤
Class 6225, File 32169
CONNECTORS
SPRING
REINFORCED:
400A BOX
IN-LINE CLIP
H
H
CLASS H & K
NON-SPRING
REINFORCED
30A SCREW
30A PRESSURE
PLATE
30A SCREW (R)
30A SCREW
30A PRESSURE
PLATE
H 21
H 21
200A BOX
SIDE-CLIP
400A BOX
SIDE-CLIP
600A BOX
IN-LINE CLIP
CLASS H, K & R 600 VOLT/FUSE BLOCKS
Figure 1 Figure 2 Figure 3 Figure 4
Recommended mounting screws for all 30A and 60A fuse blocks: 1/4” (.250” dia.)
600 Volt, 30 & 60 Ampere Class H, K and R Fuse Blocks
CATALOG NUMBER
CONNECTOR TYPE OF CLIP
CLASS H & K CLASS H & K CLASS R CONNECTOR
AMPERE WIRE NON-SPRING SPRING SPRING FIG. TORQUE
RATING POLES TYPE RANGE REINFORCED REINFORCED REINFORCED In - lb
ADDER 60300 60305 60305R 1
1 BOX Al/Cu 60301 60306 60306R 2 35
2 #2-14 60302 60307 60307R 3
3 60303 60308 60308R 4
ADDER 60310 60315 60315R 1
1 SCREW Cu 60311 60316 60316R 2 20
30 2 #10-14 60312 60317 60317R 3
GFPC 3 60313 60318 60318R 4
INSULATOR
ADDER 60320 60325 60325R 1
1 PRESSURE Cu 60321 60326 60326R 2 20
2 PLATE #10-14 60322 60327 60327R 3
3 60323 60328 60328R 4
ADDER - 60355 60355R 1
1 BOX Cu* - 60356 60356R 2 35
2 #4-14 - 60357 60357R 3
3 - 60358 60358R 4
ADDER 60600 60605 60605R 1
1 BOX Al/Cu 60601 60606 60606R 2 45
2 #2-14 60602 60607 60607R 3
60 3 60603 60608 60608R 4
GFPC
INSULATOR ADDER - 60655 60655R 1
1 BOX Cu* - 60656 60656R 2 45
2 #4-14 - 60657 60657R 3
3 - 60658 60658R 4
H
H
Note: To convert 30A or 60A adder pole to single pole, use end barrier #U09361.
* 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.
H 25
H 25
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