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POWR-GARD® Blocks and Holders Datasheet

LFJ1000 SERIES SOLAR FUSE BLOCK

1000 V dc • Clip-to-Box • Stud-to-Stud • Clip-to-Stud

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.

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

Specifications

Voltage Ratings

1000 V dc

Ampere Ratings

200, 400, 450 A

Materials:

Base

Thermoplastic

Fuse Clip

Tin plated copper alloy

Box Lug

Aluminum

Fuse Studs

Zinc plated steel

Connector Studs

Zinc plated steel

Flammability Rating

UL94 V-0

Termination Type

Box Lug or Stud Mount

Base Temp Rating

130 ˚C

Approvals

UL 4248-18 Listed

File: E345481 Vol. 1

(See Ordering Information tables)

Environmental

RoHS Compliant

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 ORDERING

NUMBER

WITHSTAND

RATING

WIRE RANGE

STANDARD (METRIC)

WIRE TYPE

RECOMMENDED

TORQUE

UL

LISTED

200

LFJ102001C

20 kA

250 kcmil - #6 (127mm2 - 16mm2)

Cu/Al

Solid/

Stranded

275 in-lb (31.1 N-m)

–

400

LFJ104001C

10 kA

350 kcmil - 1/0 (177mm2 - 55mm2)

275 in-lb (31.1 N-m)

–

450

LFJ104501C

20 kA

500 kcmil - #4 (253mm2 - 25mm2)

375 in-lb (42.4 N-m)

x

(Stud-to-Stud 1000 V)

AMPERAGE ORDERING

NUMBER

WITHSTAND

RATING

RECOMMENDED TORQUE

MAX. BUSBAR

THICKNESS

RECOMMENDED BASE TORQUE

UL

LISTED

FUSE

TERMINAL

BOLT SIZE

TORQUE

200

LFJ102001STST

20 kA

65 in-lb (7.3 N-m)

200 in-lb (22.6 N-m) .774” (19.66 mm)

1/4”

5/16”

30-40 in-lb

40-50 in-lb

x

400

LFJ104001STST

10 kA

170 in-lb (19.2 N-m)

200 in-lb (22.6 N-m) .555” (14.10 mm)

x

450

LFJ104501STST

20 kA

300 in-lb (33.9 N-m)

300 in-lb (33.9 N-m) .570” (14.18 mm)

x

(Clip-to-Stud 1000 V)

AMPERAGE ORDERING

NUMBER

WITHSTAND

RATING

RECOMMENDED TORQUE

MAX. BUSBAR

THICKNESS

RECOMMENDED BASE TORQUE

UL

LISTED

TERMINAL

BOLT SIZE

TORQUE

200

LFJ102001CST

20 kA

200 in-lb (22.6 N-m)

.774” (19.66 mm)

1/4”

5/16”

30-40 in-lb

40-50 in-lb

x

400

LFJ104001CST

10 kA

200 in-lb (22.6 N-m)

.555” (14.10 mm)

x

450

LFJ104501CST

20 kA

300 in-lb (33.9 N-m)

.570” (14.18 mm)

x