Class H/K5 and R Fuse Blocks
250 and 600 Volt
SPECIFICATIONS
Voltage Rating: 250 Volts; 600 Volts
Ampere Ratings:0 – 600 amperes
Approvals: UL Listed (File No. E14721)
CSA Certified (File No. LR73091)
RECOMMENDED FUSES
Class H Blocks
Class R Blocks
250V
600V
250V
FLNR
KLNR
LLNRK
TLN
600V
NLN
NLS
RLS
FLSR/FLSR_ID
KLSR
LLSRK/LLSRK_ID
IDSR
RLN
Class H fuse blocks are for use with Class H/K5 fuses, which
have an interrupting rating of up to 50,000 amperes. When
higher interrupting ratings are required, use Class R fuses
(200,000 A.I.R.) and Class R fuse blocks. Class R fuse blocks
are dimensionally the same as Class H blocks, but incorporate
a rejection feature which allows only Class R fuses to be in-
serted.
FEATURES/BENEFITS
Class H and Class R fuse blocks feature a one-piece fuse clip
design for positive electrical contact and minimum heat rise.
Side barriers provide isolation between poles. Bases on most
blocks are of molded phenolic or thermoplastic, UL rated at
150° C.
Class H 600V
Class H 250V
Connector Type
Connector Type
(Add suffix shown)
(Add suffix shown)
Amp No. of Catalog
Maximum
Wire Size
Amp No. of Catalog
Maximum
Wire Size
Rating Poles
Number
Rating Poles
Number
Pressure
Plate
Box
Lug
Pressure
Plate
Box
Lug
Screw
Screw
1
LH25030-1
LH25030-2
LH25030-3
LH25060-1
LH25060-2
LH25060-3
LH25100-1
LH25100-2
LH25100-3
LH25200-1
LH25200-3
LH25400-1
LH25400-3
LH25600-1
LH25600-3
S (R) P (R)
S (R) P (R)
S (R) P (R)
S (R)
S (R)
S (R)
C (R)
C (R)
C (R)
C (R)
C (R)
C (R)
C
C
C
C
C
1
LH60030-1
LH60030-2
LH60030-3
LH60060-1
LH60060-2
LH60060-3
LH60100-1
LH60100-2
LH60100-3
LH60200-1
LH60200-3
LH60400-1
LH60400-3
LH60600-1
LH60600-3
S (R) P (R)
S (R) P (R)
S (R) P (R)
C (R)
C (R)
C (R)
C (R)
C (R)
C (R)
C
C
C
C
C
S & P = #10 CU
C = #6 CU-AL
S & P = #10 CU
C = #6 CU-AL
30
60
2
3
1
2
3
1
2
3
1
3
1
3
1
3
30
60
2
3
1
2
3
1
2
3
1
3
1
3
1
3
S = #10 CU
C = #2 CU-AL
S = #10 CU
C = #2 CU-AL
100
#2/0 CU-AL
100
#2/0 CU-AL
200
400
600
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
200
400
600
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
CR
CR
C
CR
CR
C
C
C
Note: Reinforcing springs standard on all Class H fuse
blocks 100 amperes and above.
Note: Reinforcing springs standard on all Class H fuse blocks
100 amperes and above.
Class R 250V
Class R 600V
Connector Type
Connector Type
(Add suffix shown)
(Add suffix shown)
Amp No. of Catalog
Maximum
Wire Size
Amp No. of Catalog
Maximum
Wire Size
Rating Poles
Number
Rating Poles
Number
Pressure
Plate
Box
Lug
Pressure
Plate
Box
Lug
Screw
Screw
1
LR25030-1
LR25030-2
LR25030-3
LR25060-1
LR25060-2
LR25060-3
LR25100-1
LR25100-2
LR25100-3
LR25200-1
LR25200-3
LR25400-1
LR25400-3
LR25600-1
LR25600-3
SR
SR
SR
PR
PR
PR
CR
CR
CR
CR
CR
CR
C
C
C
C
C
1
LR60030-1
LR60030-2
LR60030-3
LR60060-1
LR60060-2
LR60060-3
LR60100-1
LR60100-2
LR60100-3
LR60200-1
LR60200-3
LR60400-1
LR60400-3
LR60600-1
LR60600-3
SR
SR
SR
PR
PR
PR
CR
CR
CR
CR
CR
CR
C
C
C
C
C
S & P = #10 CU
C = #6 CU-AL
S & P = #10 CU
C = #6 CU-AL
30
60
2
3
1
2
3
1
2
3
1
3
1
3
1
3
30
60
2
3
1
2
3
1
2
3
1
3
1
3
1
3
S = #10 CU
C = #2 CU-AL
S = #10 CU
C = #2 CU-AL
100
#2/0 CU-AL
100
#2/0 CU-AL
200
400
600
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
200
400
600
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
CR
CR
C
CR
CR
C
C
C
Note: Reinforcing springs standard on all Class R fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks.
110
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