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
Ampere Ratings
Flammability Rating
Termination Type
Base Temp Rating
Approvals
Environmental
1000 VDC
200, 400, 450 A
UL94 V-0
Box Lug or Stud Mount
130˚ C
UL 4248-18 Listed
File: E345481 Vol. 1
RoHS Compliant
Clip-to-Box
Stud-to-Stud
Clip-to-Stud
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.
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
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 flexibility
Ordering Information
(Clip-to-Box Lug 1000 V)
AmperAge
200
400
450
OrDerINg
Number
LFJ102001C
LFJ104001C
LFJ104501C
INTerrupT
rATINg
20 kA
10 kA
20 kA
WIre rANge
STANDArD (meTrIc)
250 kcmil - #6 (127mm
2
- 16mm
2
)
350 kcmil - 1/0 (177mm - 55mm )
2
2
WIre TYpe
Cu/Al
Solid/
Stranded
recOmmeNDeD
TOrQue
275 in-lb (31.1 N-m)
275 in-lb (31.1 N-m)
375 in-lb (42.4 N-m)
500 kcmil - #4 (253mm
2
- 25mm
2
)
(Stud-to-Stud 1000 V)
AMPERAGE
200
400
450
ORDERING
NuMbER
LFJ102001STST
LFJ104001STST
LFJ104501STST
INTerrupT
rATINg
20 kA
10 kA
20 kA
RECOMMENDED TORQuE
FuSE
TERMINAL
65 in-lb (7.3 N-m)
170 in-lb (19.2 N-m)
300 in-lb (33.9 N-m)
200 in-lb (22.6 N-m)
200 in-lb (22.6 N-m)
300 in-lb (33.9 N-m)
MAX. buSbAR
THICKNESS
.774” (19.66 mm)
.555” (14.10 mm)
.570” (14.18 mm)
recOmmeNDeD
bASE TORQuE
bOLT SIZE
TORQuE
1/4”
5/16”
30-40 in-lb
40-50 in-lb
(Clip-to-Stud 1000 V)
AMPERAGE
200
400
450
ORDERING
NuMbER
LFJ102001CST
LFJ104001CST
LFJ104501CST
INTerrupT
rATINg
20 kA
10 kA
20 kA
RECOMMENDED TORQuE
TERMINAL
200 in-lb (22.6 N-m)
200 in-lb (22.6 N-m)
300 in-lb (33.9 N-m)
MAX. buSbAR
THICKNESS
.774” (19.66 mm)
.555” (14.10 mm)
.570” (14.18 mm)
recOmmeNDeD
bASE TORQuE
bOLT SIZE
TORQuE
1/4”
5/16”
30-40 in-lb
40-50 in-lb
Littelfuse.com
1 of 4
© 2012 Littelfuse POWR-GARD
®
Products
Rev: 120512
POWR-GARD
®
Blocks and Holders Datasheet
LFJ1000 SerIeS SOLAr FuSe bLOck
Dimensions mm (inches)
Stud-to-Stud 1000 V 200 A
105.41
(4.150)
87.33
(3.438)
20.88
(.822)
22.10
(.870)
87.33
(3.438)
∅
8.64 THRU
⊔
∅
19.05 10.16
∅
0.34 THRU
⊔
∅
0.75 0.40
[
7/16-14 UNC-2A
]
111.13
(4.375)
195.53
(7.698)
34.14
(1.344)
74.93
(2.950)
40.79
(1.606)
1/4-20 UNC-2A
79.76
(3.140)
16.13
(.635)
231.70
(9.122)
50.00
(1.969)
Stud-to-Stud
1000 V 400 A
120.17
(4.731)
96.42
(3.796)
8.61
(.339)
29.49
(1.161)
TYP
33.02
(1.30)
8.61
(.339)
133.35
(5.250)
7/16-14 UNC-2A
3/8-16 UNC-2A
∅
8.64 THRU
⊔
∅
19.05 10.16
∅
0.34 THRU
⊔
∅
0.75 0.40
[
]
230.94
(9.092)
28.57
(1.125)
90.08
(3.547)
74.93
(2.950)
46.36
(1.825)
16.13
(.635)
278.43
(10.962)
76.20
(3.000)
Stud-to-Stud
1000 V 450 A
135.80
(5.347)
108.41
(4.268)
29.49
(1.161)
8.61
(.339)
8.61
(.339)
33.02
(1.300)
152.40
(6.000)
1/2-13 UNC-2A
∅
8.64 THRU
⊔
∅
19.05 10.16
∅
0.34 THRU
⊔
∅
0.75 0.40
[
254.91
(10.036)
]
30.17
(1.188)
99.61
(3.922)
81.28
(3.200)
51.11
(2.012)
16.13
(.635)
309.70
(12.193)
101.160
(4.000)
Littelfuse.com
3 of 4
© 2012 Littelfuse POWR-GARD
®
Products
Rev: 120512
POWR-GARD
®
Blocks and Holders Datasheet
LFJ1000 SerIeS SOLAr FuSe bLOck
Dimensions mm (inches)
Clip-to-Stud 1000 V 200 A
231.7
(9.12)
126.3
(4.97)
105.4
(4.15)
14.0
(.55)
36.0
(1.42) 50.0
(1.97)
22.1
(.87)
20.9
(.82)
⊔
ø19.1 10.2
ø8.6 THRU
ø.34 THRU
[
⊔
ø.75 0.40
]
74.9
(2.95)
40.8
(1.61)
16.1
(.64)
Clip-to-Stud
1000 V 400 A
278.4
(10.96)
158.3
(6.23)
149.7
(5.89)
128.8
(5.07)
120.2
(4.73)
21.6
(.85)
54.6
(2.15)
76.2
(3.00)
33.0
(1.30)
29.5
(1.16)
⊔
ø19.1 10.2
ø8.6 THRU
ø.34 THRU
[
⊔
ø.75 0.40
]
84.6
(3.33)
46.4
(1.83)
16.1
(.64)
Clip-to-Stud
1000 V 450 A
309.7
(12.19)
173.9
(6.85)
165.3
(6.51) 144.4
(5.69)
135.8
(5.35)
34.3
(1.35)
67.3
(2.65)
101.6
(4.00)
33.0
(1.30)
29.5
(1.16)
⊔
ø19.1 10.2
ø8.6 THRU
ø.34 THRU
[
⊔
ø.75 0.40
]
110.8
(4.36)
51.1
(2.01)
16.1
(.64)
Littelfuse.com
4 of 4
© 2012 Littelfuse POWR-GARD
®
Products
Rev: 120512
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