Cut Sheet

1
© 2010 Littelfusewww.littelfuse.com
Fuseblocks
class T FuseBlocks
• Steelreinforcingspringssuppliedasstandardinorderto
providelowresistanceconnectionandlong-rangereliability
• Largerblocksemployintegralheatsinkformaximumheat
dissipation
• Universalmountingholesmakeforeasyreplacement

Specifications
Voltage Ratings: 300 VAC/600 VAC
Ampere Ratings: 0 – 600 A
Leakage Current: <0.6 mA at 600 V
Flammability Rating: UL94 V-0
Approvals: UL Listed (File No. E14721)
CSA Certified (File No. LR73091)
Recommended Fuses
300 V:JLLN
600 V:JLLS
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fuse.
Web Resources
Samplerequests,downloadableCADdrawingsandother
technicalinformation: www.littelfuse.com/lft
www.littelfuse.com/fuseblocks
Description
ThenewLittelfuseClassTfuseblocksoffermany
advantagesoverpreviousgenerationsthatarenotedin
thefeaturesandbenetssection.Ofparticularvalueisthe
spacesavingsthesenewblocksprovide.
Features/Benefits
• Compactdesignmeansincreasedspacesavings
• DINRailreleasableforall30A-60Afuseblocks
• OnlyonehandisrequiredtoreleasefromDINRail(lock
openlockclosed)
• Moldedphenolicbase
Ordering Information (Class T 300 V)
amp RaTing
caTalog/sysTem numBeR
ToRque
WiRe
Range
WiRe
Type
Base Temp
RaTing
snap To
Release
Base
sysTem
numBeR
poles TeRminal suFFix
1 2 3 Box lug
pRes suRe
plaTe
scReW
30 LFT30030 1 2 3 C — —
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL
Solid/Stranded
125°C •
60 LFT30060 1 2 3 C
— —
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
13.6 N-m (120 in-lbs) 2/0-6 AWG
130°C —
100 LFT30100 1 — 3 CS
— — 4.5 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 LFT30200 1 — 3 CS — — 31.1 N-m (275in-lb) 250 kcmil-6
400 LFT30400 1 — 3 CS — — (2) 31.1 N-m (275in-lb) 250 kcmil-6
600 LFT30600 1 — 3 CS — — (2) 42.4 N-m (375in-lb) 500 kcmil-6
Ordering Information (Class T 600 V)
amp RaTing
caTalog/sysTem numBeR
ToRque
WiRe
Range
WiRe
Type
Base Temp
RaTing
snap To
Release
Base
sysTem
numBeR
poles TeRminal suFFix
1 2 3 Box lug
pRes suRe
plaTe
scReW
30 LFT60030 1 2 3 C P S
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
CU-AL
Solid/Stranded
125°C •
60 LFT60060 1 2 3 C — —
5.6 N-m (50 in-lbs)
2.8 N-m (25 in-lbs)
2-4 AWG
6-14 AWG
100 LFT60100 1 — 3 CS — —
13.6 N-m (120 in-lbs) 2/0-6 AWG
130°C —
4.0 N-m (40 in-lbs) 8 AWG
4.0 N-m (35 in-lbs) 10-14 AWG
200 LFT60200 1 — 3 CS — — 31.1 N-m (275in-lb) 250 kcmil-6
400 LFT60400 1 — 3 CS — — (2) 31.1 N-m (275in-lb) 250 kcmil-6
600 LFT60600 1 — 3 CS — — (2) 42.4 N-m (375in-lb) 500 kcmil-6
*see
note
*Wire Type for Pressure Plate and Screw Terminal is CU only
NEW!
Smaller
Design