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©August 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

Fuseblock Datasheet

LF SerieS CLaSS T FuSebLoCkS

Description

The new Littelfuse Class T fuse blocks offer many

advantages over previous generations. Particular value is

the space savings these new blocks provide.

Features/Beneﬁts

• Compact design for increased space savings

• Universal mounting holes for easy replacement

• DIN Rail releasable for all 30 - 60 A fuse blocks

• Only one hand is required to release from DIN Rail

Ordering Information

(Class T 300 V)

amp raTing

CaTaLog/SySTem number

Torque

Wire

range

Wire

Type

baSe Temp

raTing

Din raiL

mounT

CoVer

orDering

number*

baSe

SySTem

number

poLeS TerminaL SuFFix

1 2 3 box Lug

preS Sure

pLaTe

SCreW

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

•

LFT30030FBC

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

LFT30060FBC

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

LFT30100FBC

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

Din raiL

mounT

CoVer

orDering

number*

baSe

SySTem

number

poLeS TerminaL SuFFix

1 2 3 box Lug

preS Sure

pLaTe

SCreW

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

•

LFT60030FBC

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

LFT60060FBC

100

LFT60100

1 — 3 CS — —

13.6 N-m (120 in-lbs) 2/0-6 AWG

130°C

—

LT60100FBC

4.0 N-m (40 in-lbs) 8 AWG

4.0 N-m (35 in-lbs) 10-14 AWG

LT60200FBC

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 LT60400FBC

600

LFT60600

1 — 3 CS — —

(2) 42.4 N-m (375in-lb) 500 kcmil-6 LT60600FBC

*Covers sold individually. One cover needed for each pole.

**Wire Type for Pressure Plate and Screw Terminal is CU only

*Covers sold individually. One cover needed for each pole.

• Reinforced fuse clips are standard

• Larger blocks employ integral heat sink for maximum

heat dissipation

• Covers available for most amperages to enhance safety

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)

Environmental: RoHS Compliant, Lead (Pb) Free

Recommended Fuses

300 V: JLLN 600 V: JLLS

Web Resources

Sample requests, downloadable CAD drawings, fuseblock cover

datasheet and other technical information:

www.littelfuse.com/lft

www.littelfuse.com/fuseblocks

Summary of content (5 pages)

PAGE 1
Fuseblock Datasheet LF Series Class T Fuseblocks • Reinforced fuse clips are standard • Larger blocks employ integral heat sink for maximum heat dissipation • Covers available for most amperages to enhance safety Specifications Voltage Ratings: Ampere Ratings: Leakage Current: Flammability Rating: Approvals: Description Environmental: The new Littelfuse Class T fuse blocks offer many advantages over previous generations. Particular value is the space savings these new blocks provide.
PAGE 2
Fuseblock Datasheet LF Series Class T Fuseblocks 53.5 [2.11] ﬂ�� Dimensions in mm (inches) ﬂ�� ﬂ�� 300 V 30 A 21.8 [.86] 15.0 [.59] 59.9 [2.36] 40.9 [1.61] 6.9 [.27] 35.6 [1.40] 44.9 [1.77] 25.9 [1.02] 35.6 [1.40] Ø4.5 [.18] TYP. 71.1 [2.80] ﬂ�� 3.7 [.15] ﬂ�� ﬂ�� 300 V 60 A 16.4 [.65] 46.9 [1.85] 24.6 [.97] 30.5 [1.20] 8.2 [.32] 41.9 [1.65] 69.1 [2.72] 52.7 [2.
PAGE 3
Fuseblock Datasheet ﬂ�� ﬂ�� LF Series Class T Fuseblocks Dimensions in mm (inches) 38.1 [1.50] 19.1 [.75] 300 V 200 A Ø.3 THRU Ø.5 .5 9.5 [.38] 22.2 [.88] 9.5 [.38] 114.3 [4.50] 92.1 [3.63] 57.2 [2.25] 15.9 [.63] 88.9 [3.50] R3.6 [.14] TYP. 168.3 [6.63] 177.8 [7.00] 300 V 400 A 28.6 [1.13] ﬂ�� 171.5 [6.75] 127.0 [5.00] 57.2 [2.25] 12.7 [.50] 60.6 [2.38] 85.7 [3.38] Ø.3 THRU Ø.5 .5 9.5 [.38] ﬂ�� ﬂ�� 15.9 [.
PAGE 4
Fuseblock Datasheet LF Series Class T Fuseblocks Dimensions in mm (inches) 24.6 [.97] 17.0 [.67] 600 V 30 A ﬂ�� 46.9 [1.85] 69.1 [2.72] 29.8 [1.17] 7.6 [.30] ﬂ�� ﬂ�� 41.9 [1.65] 52.0 [2.05] 44.8 [1.77] R2.9 [.11] TYP. 89.7 [3.53] ﬂ�� ﬂ�� ﬂ�� 600 V 60 A ��ﬂ��ﬂ��ﬂ�� 76.1 [3.00] 39.9 [1.
PAGE 5
Fuseblock Datasheet LF Series Class T Fuseblocks Dimensions in mm (inches) ﬂ�� 38.1 [1.50] 600 V 200 A 114.3 [4.50] 19.1 [.75] 19.1 [.75] 57.2 [2.25] 15.9 [.63] Ø.3 THRU 9.5 [.38] Ø.5 .5 9.5 [.38] ﬂ�� ﬂ�� 98.4 [3.88] Ø.3 THRU Ø.6 .5 196.9 [7.75] 57.2 [2.25] 44.5 [1.75] 600 V 400 A 171.5 [6.75] 28.6 [1.13] 127.0 [5.00] 12.7 [.50] Ø.3 THRU Ø.5 .5 9.5 [.38] 85.7 [3.38] 60.3 [2.38] SPECIFICATIONS: ��ﬂ��ﬂ��ﬂ�� 15.9 [.