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Blocks and Holders
Class T Fuse Blocks
300 and 600 Volt
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.
Specifications
Voltage Ratings:
Ampere Ratings:
Approvals:
300 Volts AC
600 Volts AC
0 – 600 amperes
UL Listed (File No. E14721)
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.
Class T 300V
Class T 600V
Amp
Rating
No. of
Poles
Catalog
Number
Connector Type
(Add Suffix Shown)
Screw Box Lug
Maximum
Wire Size
Amp
Rating
No. of
Poles
Catalog
Number
Connector Type
(Add Suffix Shown)
Screw Box Lug
Maximum
Wire Size
30
2
3
LT30030-2
LT30030-3
CR
CR
S = #10 CU
C = #2 CU
30
1
2
LT60030-1
LT60030-2
SR
SR
CR
CR
S = #10 CU
C = #2 CU-AL
2
LT30060-2
CR
3
LT60030-3
SR
CR
60
3
LT30060-3
CR
C = #2 CU-AL
1
LT60060-1
CR
4
1
LT30060-4
LT30100-1
CR
C
60
2
3
LT60060-2
LT60060-3
CR
CR
C = #2 CU-AL
100
2
LT30100-2
C
#2 ?0 CU-AL
1
LT60100-1
C
3
LT30100-3
C
100
2
LT60100-2
C
#2 ?0 CU-AL
200
1
LT30200-1
C
250 MCM CU-AL
3
LT60100-3
C
400
600
1
1
LT30400-1
LT30600-1
C
C
(2) 250 MCM CU-AL
(2) 500 MCM CU-AL
200
400
1
1
LT60200-1
LT60400-1
C
C
250 MCM CU-AL
(2) 250 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.
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.
LT30030
1.19
[30.2]
1.19"
[30.2]
1.13"
[28.6]
0.218" [5.54] THRU
0.39" [9.91] C'BORE
x 0.44" [9.91] DP.
2.88
[73.0]
2.25
[57.2]
2.88"
[73.0]
2.25"
[57.2]
.31
[7.9]
1.13
[28.6]
2.38
.31"
[7.9]
1.13"
[28.6]
3.50"
1.12"
0.62"
[15.9]
120
[60.3]
2 POLE
[88.9]
3 POLE
www.littelfuse.com
[28.5]
? 2005 Littelfuse ? POWR-GARD ? Products Catalog
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