Littelfuse LFJ1000 User Manual

POWR-GARD® Blocks and Holders Datasheet

LFJ1000 SerIeS SOLAr FuSe bLOck

1000 VDC • Clip-to-Box • Stud-to-Stud • Clip-to-Stud

Specifications

Voltage Ratings 1000 VDC
Ampere Ratings 200, 400, 450 A
Flammability Rating UL94 V-0
Termination Type Box Lug or Stud Mount
Base Temp Rating 130˚ C

Clip-to-Box Stud-to-Stud Clip-to-Stud

Approvals UL 4248-18 Listed
File: E345481 Vol. 1
Environmental RoHS Compliant

Description

The LFJ1000 series fuse block is specifically designed
for the Littelfuse SPFJ 1000 V Solar Fuse. It meets UL
electrical requirements, is available in multiple amperages,
and comes in a variety of fuse mounting and termination
configurations; fuse clip to box lug, fuse stud to wire stud
and fuse clip to wire stud.

Features/Benefits

• Narrowwidthincreasesspacesavings

• RangeofamperagestomatchallSPFJfuseoptions

• BoxLugterminationstyleaccommodatesawide
rangeofcablesizes

• Stud-mountedoptionincreasesconvenience

• Approvalforusewithcopperoraluminumlugs
allowingfordesignexibility

Recommended Fuses

SPFJ Solar Series

Web Resources

Sample requests, downloadable CAD drawings, dimensions
and other technical information:

Littelfuse.com/LFJ1000

For a comprehensive overview of solar market solutions,
visit: Littelfuse.com/Solar

Ordering Information

(Clip-to-Box Lug 1000 V)

AmperAge

200 LFJ102001C 20 kA 250 kcmil - #6 (127mm2 - 16mm2)

400 LFJ104001C 10 kA 350 kcmil - 1/0 (177mm

450 LFJ104501C 20 kA 500 kcmil - #4 (253mm

OrDerINg

Number

(Stud-to-Stud 1000 V)

AMPERAGE

200 LFJ102001STST 20 kA 65 in-lb (7.3 N-m) 200 in-lb (22.6 N-m) .774” (19.66 mm)

400 LFJ104001STST 10 kA 170 in-lb (19.2 N-m) 200 in-lb (22.6 N-m) .555” (14.10 mm)

450 LFJ104501STST 20 kA 300 in-lb (33.9 N-m) 300 in-lb (33.9 N-m) .570” (14.18 mm)

ORDERING

NuMbER

INTerrupT

rATINg

INTerrupT

rATINg

WIre rANge

STANDArD (meTrIc)

2

- 55mm2) 275 in-lb (31.1 N-m)

2

- 25mm2) 375 in-lb (42.4 N-m)

RECOMMENDED TORQuE

FuSE TERMINAL bOLT SIZE TORQuE

Cu/Al

MAX. buSbAR

WIre TYpe

Solid/

Stranded

THICKNESS

recOmmeNDeD

TOrQue

275 in-lb (31.1 N-m)

recOmmeNDeD bASE TORQuE

1/4”

5/16”

30-40 in-lb
40-50 in-lb

(Clip-to-Stud 1000 V)

AMPERAGE

200 LFJ102001CST 20 kA 200 in-lb (22.6 N-m) .774” (19.66 mm)

400 LFJ104001CST 10 kA 200 in-lb (22.6 N-m) .555” (14.10 mm)

450 LFJ104501CST 20 kA 300 in-lb (33.9 N-m) .570” (14.18 mm)

Littelfuse.com © 2012 Littelfuse POWR-GARD® Products

ORDERING

NuMbER

INTerrupT

rATINg

RECOMMENDED TORQuE

TERMINAL bOLT SIZE TORQuE

1 of 4

MAX. buSbAR

THICKNESS

recOmmeNDeD bASE TORQuE

1/4”

5/16”

30-40 in-lb
40-50 in-lb

Rev: 120512

POWR-GARD® Blocks and Holders Datasheet

LFJ1000 SerIeS SOLAr FuSe bLOck

Dimensions mm (inches)

Clip-to-Box 1000 V 20 0 A

Clip-to-Box

1000 V 40 0 A

155.7
(6.13)

ø8.64 THRU

⊔

ø19.1

10.2

ø0.34 THRU

[ ]

ø0.75 0.40

⊔

254.0
(10.0)

77.9

(3.07)

146.1
(5.75)

19.1

(0.75)

15.9

(0.63)

50.8

(2.00)

108.0
(4.25)

69.9

(2.75)

72.4

(2.85)

19.1

(0.75)

57.2

(2.25)

76.2

(3.00)

Clip-to-Box 1000 V 45 0 A

ø8.6 THRU

⊔

[ ]

⊔

298.45
(11.75)

ø19.1

ø0.34 THRU

ø0.75 0.44

11.2

174.63
(6.88)

ø7.1 THRU

⊔

ø14.2 x 11.2

ø0.28 THRU

[ ]

ø0.56 x 0.44

⊔

123.83
(4.88)

15.9

(0.63)

84.4

(3.32)

25.40
(1.00)

76.20
(3.00)

110.58
(4.35)

101.60
(4.00)

15.88

(0.63)

Littelfuse.com © 2012 Littelfuse POWR-GARD® Products

2 of 4

Rev: 120512