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
250V
600V
NLN
RLN
NLS
RLS
Class R Blocks
250V
600V
FLNR
KLNR
LLNRK
TLN
FLSR/FLSR_ID
KLSR
LLSRK/LLSRK_ID
IDSR
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 250V
Amp No. of
Rating Poles
1
2
3
1
2
3
1
2
3
1
3
1
3
1
3
Catalog
Number
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
Connector Type
(Add suffix shown)
Screw Pressure
Plate
Box
Lug
Class H 600V
Maximum
Wire Size
Amp No. of
Rating Poles
1
2
3
1
2
3
1
2
3
1
3
1
3
1
3
Catalog
Number
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
Connector Type
(Add suffix shown)
Screw Pressure
Plate
Box
Lug
Maximum
Wire Size
30
60
S (R)
S (R)
S (R)
S (R)
S (R)
S (R)
P (R)
P (R)
P (R)
100
200
400
600
C (R)
S & P = #10 CU
C (R)
C = #6 CU-AL
C (R)
C (R)
S = #10 CU
C (R)
C = #2 CU-AL
C (R)
C
C
#2/0 CU-AL
C
C
250 MCM CU-AL
C
CR
CR (2) 350 MCM CU-AL
C
(2) 500 MCM CU-AL
C
30
S (R)
S (R)
S (R)
P (R)
P (R)
P (R)
60
100
200
400
600
C (R)
S & P = #10 CU
C (R)
C = #6 CU-AL
C (R)
C (R)
S = #10 CU
C (R)
C = #2 CU-AL
C (R)
C
C
#2/0 CU-AL
C
C
250 MCM CU-AL
C
CR
CR (2) 350 MCM CU-AL
C
(2) 500 MCM CU-AL
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
Amp No. of
Rating Poles
1
2
3
1
2
3
1
2
3
1
3
1
3
1
3
Catalog
Number
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
Connector Type
(Add suffix shown)
Screw Pressure
Plate
Box
Lug
Class R 600V
Maximum
Wire Size
Amp No. of
Rating Poles
1
2
3
1
2
3
1
2
3
1
3
1
3
1
3
Catalog
Number
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
Connector Type
(Add suffix shown)
Screw Pressure
Plate
Box
Lug
Maximum
Wire Size
30
SR
SR
SR
PR
PR
PR
60
100
200
400
600
CR
CR
CR
CR
CR
CR
C
C
C
C
C
CR
CR
C
C
S & P = #10 CU
C = #6 CU-AL
S = #10 CU
C = #2 CU-AL
#2/0 CU-AL
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
30
SR
SR
SR
PR
PR
PR
60
100
200
400
600
CR
CR
CR
CR
CR
CR
C
C
C
C
C
CR
CR
C
C
S & P = #10 CU
C = #6 CU-AL
S = #10 CU
C = #2 CU-AL
#2/0 CU-AL
250 MCM CU-AL
(2) 350 MCM CU-AL
(2) 500 MCM CU-AL
Note: Reinforcing springs standard on all Class R fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks.
110
Class H/K5 and R Fuse Blocks
250 Volt
250V 30A
.22/5.6 DIA. HOLE THRU
4 PLACES
1.91"
[48.5]
2.95"
[74.9]
1.25"
[31.8]
1.50"
[38.1]
1.50"
[38.1]
3.00"
[76.2]
.50"
[13]
.75"
[19]
.19"
[4.8]
.33"
[8.4]
.22"
1.25"
[31.7]
[5.7]
.53"
[13]
1.12"
[28.4]
2.50"
[63.5]
1.38"
[35.1]
1 POLE
2 POLE
3 POLE
250V 60A
.218/[5.54] DIA.
C'BORE .400/[10.16] DIA. X .63[16] DP
4.83"
[122.7]
4.83"
[122.7]
4.83"
[122.7]
1.24"
[31.5]
1.24"
[31.5]
1.24"
[31.5]
1.79"
[45.6]
1.79"
[45.6]
1.79"
[45.6]
.49"
[12]
.50"
1.48"
[37.6]
[12.7]
.49"
[12]
.50"
1.33"
[33.7]
[12.7]
.49
[12]
.50"
1.33"
[33.7]
1.33"
[33.7]
[12.7]
.74"
[19]
2.86"
[72.7]
4.23"
[108]
2.01"
[51.1]
1 POLE
2 POLE
3 POLE
250V 100A
.28 (7.1) THRU
.53 (13.5) C'BORE x .60 (15.2) DP
3 POLE
.187 HEX
SOCKET
2 POLE
1 POLE
.63
6.13
STRIP
GAUGE
STRIP
GAUGE
2.37
STRIP
GAUGE
STRIP
GAUGE
1.88
2.44
[62.0]
.61
TYP.
1.56
TYP. FUSE q
1.56
5.05
[128.3]
3.49
[88.6]
1.93
[49.0]
111
Class H/K5 and R Fuse Blocks
250 Volt
250V 200A
.50"
[13]
3.00"
[76.2]
9.00"
[229]
.312" HEX.
2.00"
[50.8]
.50"
[13]
2.00"
[50.8]
4.00"
[102]
301"
[76.5]
7.13"
[181.1]
7.13"
[181.1]
3.00"
[76.2]
3.00"
[76.2]
[52.3]
2.06"
2.06"
[52.3]
1.23"
[31.2]
3.00"
[76.2]
.66"
1.06"
[26.9]
[16.8]
1 POLE
3 POLE
250V 400A
3.50"
[88.9]
9.25"
[235]
3.31"
[84]
11.50"
[292.1]
11.50"
[292.1]
4.00"
[101.6]
4.00"
[101.6]
3.75
[95.2]
3.75"
[95.3]
10.50"
[266.7]
1 POLE
3 POLE
250V 600A
4.50"
[114.3]
.75"
[19]
11.00"
[279.4]
4.37"
[111]
14.00"
[355.6]
14.00"
[355.6]
5.00"
[127]
5.00"
[127]
[114.3]
4.50"
4.50"
[114.3]
12.50"
[317.5]
1 POLE
3 POLE
112
Class H/K5 and R Fuse Blocks
600 Volt
600V 30A
.34"
[8.7]
.265" [6.7] DIA. THRU
.05" [12.7] C'BORE
x .44 [11.2] DP.
3.13"
.31"
[7.9]
[79.4]
3.13"
[79.4]
3.13"
[79.4]
6.25"
[159]
6.25"
[159]
6.25"
[159]
.38"
[97]
.25"
1.56"
[39.6]
[6.5]
.62"
3.13"
[79.2]
[16]
1.63"
[41.4]
.69"
1.69"
[18]
[42.9]
2.94"
[74.7]
4.25"
[108]
1 POLE
2 POLE
3 POLE
600V 60A
1.95"
[49.5]
3.51"
[89.2]
5.08"
[1.29]
6.75"
[171.4]
.281" D
.
[7.1]
3.12"
[79.2]
.50" D.
[12.7]
1.81"
[46]
.
62"
.66"
[19.6]
1.56"
[39.6]
3.12"
[79.2]
.27"
.77"
[19.6]
[6.8]
[15.7]
1.56"
[39.6]
1.29"
[32.8]
3.12"
[79.2]
2.12"
[53.8]
1 POLE
2 POLE
3 POLE
600V 100A
.28 (7.1) DIA. THRU
.59 (14.9) C'BORE x .64 (16.2) DP.
TYP.
3 POLE
.187 HEX
SOCKET
2 POLE
1 POLE
STRIP
GAUGE
STRIP
GAUGE
STRIP
GAUGE
8.13
.87
STRIP
GAUGE
4.26
1.93
2.60
[66.0]
.61
1.81
TYP.
5.73
[145.5]
3.91
[99.3]
2.10
[53.3]
113
Class H/K5 and R Fuse Blocks
600 Volt
600V 200A
.50"
[13]
3.00"
[76.2]
9.00"
[229]
2.00"
[50.8]
.312" HEX.
.50"
[13]
2.00"
[50.8]
4.00"
[102]
3.01"
[76.5]
9.62"
[244]
9.62"
[244]
3.00"
[76.2]
3.00"
[76.2]
3.31"
[84.1]
3.31"
[84.1]
1.23"
[31.2]
3.00"
[76.2]
.66"
1.06"
[26.0]
[16.8]
1 POLE
3 POLE
600V 400A
3.50 "
[88.9]
9.25"
[235]
3.31"
[84.1]
14.50"
[368.3]
14.50"
[368.3]
7.00"
[177.8]
7.00"
[177.8]
3.75
[95.3]
3.75"
[95.3]
2.25"
[57.2]
10.50"
[266.7]
1 POLE
3 POLE
600V 600A
4.50"
[114.3]
.75"
[19]
11.00"
[279.4]
4.31"
[109.5]
17.00"
[431.8]
17.00"
[431.8]
8.00"
[203]
8.00"
[203]
4.50"
[114]
4.50"
[114]
3.00"
[76.2 ]
12.50"
[317.5]
1 POLE
3 POLE
114
