118
Class T Fuse Blocks
300 and 600 Volt
SPECIFICATIONS
Voltage Ratings: 300 Volts AC
600 Volts AC
Ampere Ratings: 0 600 amperes
Approvals: UL Listed (File No. E14721)
Class T 600V
Class T 300V
Maximum
Wire Size
Amp
Rating
No. of
Poles
Catalog
Number
Connector Type
(Add suffix shown)
30
2
LT30030-2
CR
S = #10 CU
3
LT30030-3
CR
C = #2 CU
2
LT30060-2
CR
60
3
LT30060-3
CR
C = #2 CU-AL
4
LT30060-4
CR
1
LT30100-1
C
100
2
LT30100-2
C
#2/0 CU-AL
3
LT30100-3
C
200
1
LT30200-1
C
250 MCM CU-AL
400
1
LT30400-1
C
(2) 250 MCM CU-AL
600
1
LT30600-1
C
(2) 500 MCM CU-AL
Note: Reinforcing springs standard on all 300 volt Class T
fuse blocks up to 100 amperes. 300 volt Class T blocks 200
amperes and larger have stud mountings.
Box Lug
Screw
Maximum
Wire Size
Amp
Rating
No. of
Poles
Catalog
Number
Connector Type
(Add suffix shown)
Box Lug
Screw
1
LT60030-1
SR
CR
S = #10 CU
30
2
LT60030-2
SR
CR
C = #2 CU-AL
3
LT60030-3
SR
CR
1
LT60060-1
CR
60
2
LT60060-2
CR
C = #2 CU-AL
3
LT60060-3
CR
1
LT60100-1
C
100
2
LT60100-2
C
#2/0 CU-AL
3
LT60100-3
C
200
1
LT60200-1
C
250 MCM CU-AL
400
1
LT60400-1
C
(2) 250 MCM CU-AL
600
1
LT60600-1
C
(2) 500 MCM CU-AL
Note: Reinforcing springs standard on all 600 volt Class T
fuse blocks up to 60 amperes. 600 volt Class T blocks 100
amperes and larger have stud mountings.
CSA Certified (File No. LR73091)
RECOMMENDED FUSES
JLLN (300V) and JLLS (600V) series fuses
300 and 600 volt fuse blocks are designed for use with
miniaturized Class T fuses. Class T fuses are very fast-acting,
current limiting, and approximately one-third the size of
electrically-comparable Class RK1 fuses.
FEATURES/BENEFITS
Bases are molded phenolic. To provide a low resistance
connection and long-range reliability, steel reinforcing
springs are supplied as standard. Larger blocks employ an
integral heat sink for maximum heat dissipation.
.31"
[7.9]
2.88"
[73.0]
2.25"
[57.2]
1.19"
[30.2]
1.13"
[28.6]
.62"
[15.9]
3.50"
[88.9]
1.12"
[28.5]
1.13"
[28.6]
.218" [5.54] THRU
.39" [9.91] C'BORE
x .44" [9.91] DP.
2.88
[73.0]
2.25
[57.2]
1.19
[30.2]
1.13
[28.6]
2.38
[60.3]
.31
[7.9]
2 POLE
3 POLE
LT30030
119
4.50"
[114.3]
5.25"
[133.3]
3.09"
[78.6]
1.56"
[39.6]
1.37
[34.8]
.203" [5.1]
DIA.HOLE
.69"
[17.5]
.37" [9.5]
C'BORE
4.78"
[121.4]
2.39"
[60.7]
.18"
[4.6]
1.87"
[47.5]
1 POLE
2 POLE
1.41"
[35.7]
4.50"
[114.3]
5.25"
[133.3]
4.12"
[104.6]
2.75"
[69.8]
.69"
[17.5]
3 POLE
6.25"
[158.7]
7.00"
[177.8]
1.69
"
[42.9]
1.50"
[38.1]
.281" [7.1]
DIA.HOLE
.69"
[17.5]
.50" [12.7]
C'BORE
1 POLE
1 POLE
1 POLE
.18"
[4.6]
2.25"
[57.1]
8.12"
[206.2]
7.37"
[187.3]
1.12"
[28.6]
1.84"
[46.7]
.28" [7.1] DIA HOLE
.50" [12.7] C'BORE
x .43" [10.9] DEEP
2.25"
[57.1]
.
19"
[48]
2.37"
[60.2]
.62"
[15.7]
8.75"
[222.2]
8.06"
[203.2]
2.03"
[51.6]
.28" [7.1] DIA HOLE
.50" [12.7] C'BORE
x .43" [10.9] DEEP
2.75"
[69.8]
.37"
[9.5]
.19"
[4.8]
2.62"
[66.5]
.62"
[15.7]
Class T Fuse Blocks
300 Volt
LT30060
LT30100
LT30200
LT30400
LT30600
.31"
[7.9]
2.88"
[73.0]
2.25"
[57.2]
1.19"
[30.2]
1.13"
[28.6]
.62"
[15.9]
3.50"
[88.9]
1.28"
[32.5]
1.13"
[28.6]
.20"
[5.2]
1.20"
[30.6]
2.06"
52.4]
.44"
[11.1]
3.09"
[78.6]
4.47"
[113.5]
.218" [5.54] THRU
.39" [9.91] C'BORE
x .44" [9.91] DP.
2.88
[73.0]
2.25
[57.2]
1.19
[30.2]
1.13
[28.6]
2.38
[60.3]
.31
[7.9]
2 POLE
3 POLE
4 POLE
120
Class T Fuse Blocks
600 Volt
5.31"
[134.9]
[153.9]
2.36"
[6.0]
1.37
[34.8]
.203" [5.1]
DIA.HOLE
.69"
[17.5]
.37" [9.5]
C'BORE
5.31"
[134.9]
2.39"
[60.7]
4.78"
[121.4]
6.06"
[153.9]
3.09'"
[78.6]
1.41"
[35.7]
4.12"
[104.6]
2.75"
[69.8]
.69"
[17.5
]
.18"
[4.6]
1.87"
[47.5]
1 POLE
3 POLE
2 POLE
6.06'
3.13"
[79.4]
1.56"
[39.7]
.218" x .655"
[5.54 x 16.64]
SLOT 2 PLS.
.78"
[20]
3.38"
[85.7]
1.69"
[42.9]
2 POLE
1 POLE
1.81"
[46.0]
2.31"
[58.7]
.91"
[23.0]
.63"
[16]
1.74"
[44.2]
.218" x .655"
[5.54 x 16.64]
SLOT 2 PLS.
4.69"
[119]
1.56"
[39.7]
.78"
[20]
3.38"
[85.7]
1.69"
[42.9]
3 POLE
LT60030
LT60060
LT60100
3.13"
[79.4]
.91"
[23.0]
.33"
[8.3]
1.44"
[36.5]
.33"
[8.3]
.55"
[13.9]
1.56"
[39.7]
.218" x .655"
[5.54 x 16.64]
SLOT 2 PLS.
.78"
[20]
3.38"
[85.7]
1.69"
[42.9]
.218" x .655"
[5.54 x 16.64]
SLOT 2 PLS.
4.69"
[119]
1.56"
[39.7]
.78"
[20]
3.38"
[85.7]
1.69"
[42.9]
2 POLE
1 POLE
3 POLE
.62"
[15.9]
1.28"
[32.5]
3.19"
[81.0]
121
7.0"
[177.8]
7.75"
[196.8]
2.50"
[63.5]
1.50"
[38.1]
.281" [7.1]
DIA.HOLE
.75"
[19.0
]
.50" [12.7]
C'BORE
1 POLE
.18"
[4.6]
2.25"
[57.1]
9.00"
[228.6]
8.25"
[209.5]
1.12"
[28.6]
2.72"
[69.1]
.28" [7.1] DIA HOLE
.50" [12.7] C'BORE
x .43" [10.9] DEEP
2.25"
[57.1
]
.19"
[4.8]
2.37"
[60.2
]
.62"
[15.7]
1 POLE
9.75"
[247.6]
9.0"
[228.6]
2.95"
[75.0]
.28" [7.1] DIA HOLE
.50" [12.7] C'BORE
x .43" [10.9] DEEP
2.75"
[69.8]
.37"
[9.5]
.19"
[4.8]
2.62"
[66.5]
.62"
[15.7]
1 POLE
Class T Fuse Blocks
600 Volt
LT60200
LT60400
LT60600
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