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Rev: 1-A-032316

POWR-GARD

Blocks and Holders Datasheet

1 of 6

Connectors

Box lug connectors are designed for use with a single, solid

or class B or C stranded conductor. Use of more than one

con ductor per connector opening or use of extra-ﬂexible,

ﬁne-stranded conductors, such as welding cable, voids the

UL Listing and may cause overheating. Manufacturers of cable

ter minations can furnish crimp-on sleeves for ﬁne stranded

conductors which permit these conductors to be used with box

lugs.

Ampere Ratings

The ampere rating per pole for power distribution blocks is

based on the line ampacity of 75°C insulated conductors per

NEC

Table 310.16. If 60°C insulated conductors are used, load

must not exceed the ampacity of 60°C conductors. Use of

conductors rated in excess of 75°C is permitted (for example

90°C), however, load must not exceed the ampacity of 75°C

conductors.

Speciﬁcations

Voltage Rating 600 V

Current Rating Based on NEC Table 310.16, using 75°C copper wire

Material Phenolic rated at 150°C and Thermoplastic

rated at 125°C (LD1400 and LS1300 series only)

Connector Standard: Highly con duc tive aluminum, tin plated

Copper: Highly conductive copper, tin plated

Flammability Rating UL94 V-0

Approvals UL Recognized - LD/LS Series (File: E171395)

LFD/LFS Series (File: E309688)

CSA Certiﬁed - LD/LS Series (File: LR700111)

LFD/LFS Series (File: 007316_0_000)

Environmental RoHS compliant, Lead (Pb) free

Ordering Information

See Selection Guide on next page

Web Resources

For dimension, CAD and 3-D drawings, visit:

Littelfuse.com/powrbloks

POWR-BLOKS

™

Distribution Blocks • Splicer Blocks • Covers

Description

POWR-BLOKS

power distribution blocks offer a safe,

convenient way of splicing cables, providing a ﬁxed junction

tap-off point or splitting primary power into secondary

circuits. Lx2xxx-DIN series offers integral DIN-Rail mount

and an optional hinged safety cover.

Optional power distribution block covers provide protection

against accidental shorting between poles caused by

loose wires, tools, or other conductive material. They also

protect personnel from accidentally contacting energized

connectors. To order protective covers, match the number

of poles for the block to the cover.

Applications

Typical applications include heating, air conditioning and

refrigeration systems, el e va tor systems, material handling

equipment, control panels, motor controls, switchgear,

and anywhere power needs to be distributed to more

than one load.

Summary of content (6 pages)

PAGE 1
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ Distribution Blocks • Splicer Blocks • Covers Connectors Box lug connectors are designed for use with a single, solid or class B or C stranded conductor. Use of more than one conductor per connector opening or use of extra-flexible, fine-stranded conductors, such as welding cable, voids the UL Listing and may cause overheating.
PAGE 2
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ AL 175 2 175 3 175 2 175 3 310 2 310 3 175 175 175 175 175 175 335 335 380 335 335 380 350 350 350 380 380 380 350 350 350 380 380 380 335 335 335 380 380 380 380 380 380 760 760 760 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 665 1 665 2 665 3 AL AL AL AL CU AL AL AL CU CU AL AL AL AL AL AL *PLASTIC COVER ORDERING NUMBER LUG TYPE WIRE RANGE TORQUE RANGE DRAWING 1 2 3 4 CONNECTOR IMA
PAGE 3
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ 760 1 760 2 AL 760 3 380 1 380 2 AL 380 3 760 1 760 2 CU 760 3 760 1 760 2 CU 760 3 175 1 175 2 AL 175 3 175 Adder 175 1 175 2 AL 175 3 175 Adder 175 1 175 2 CU 175 3 175 Adder LUG TYPE WIRE RANGE TORQUE RANGE 2 2 2 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/8" Hex 3/16" Hex 3/16" Hex 3/16" Hex – – 5/16" Hex 5/16" Hex – 3/16" Hex 3/16" Hex 3/16" Hex
PAGE 4
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ 3 AL 115 1 115 2 AL 115 3 115 4 150 1 150 2 CU 150 3 115 1 AL 115 2 115 3 175 1 175 2 AL 175 3 255 1 AL 255 2 255 3 255 1 255 2 CU 255 3 310 1 310 2 AL 310 3 420 1 420 2 AL 420 3 620 1 620 2 AL 620 3 760 1 760 2 AL 760 3 175 1 175 2 AL 175 3 175 Adder 175 1 175 2 CU 175 3 175 Adder LUG TYPE WIRE RANGE TORQUE RANGE DRAWING 310 CONNECTOR IMAGE LOAD CONNECTION OPENINGS PER POLE 2 LINE CONNECTION CATALOG/ ORDERING NUMBER 1 5/16" Hex 350mcm-#6
PAGE 5
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ Distribution Block and Splicer Block Outline Drawings Dimensions Inches (mm) LX0XXX Figure 1 .218 x .375" [5.5 x 9.5]SLOT .07" [1.8] .218 x .375" [5.5 x 9.5]SLOT .07" [1.8] 2.90" 2.90" [73.7] [73.7] 1.00" 1.00" [25.4] 3.38" [85.8] 3.52" [89.3] .265 x .375" [6.7 x 9.5] SLOT 4.13" [104.8] 4.63" [118] 4.73" [121] 0.76” [19] 0.38” [9.7] 0.52” [13] 1.93” [49.1] ø .201 / [5.11] THRU 1.40” [35.6] 0.17” [4.5] 2-pole 2.68” [67.7] 1.92” [48.
PAGE 6
POWR-GARD® Blocks and Holders Datasheet POWR-BLOKS ™ Distribution Block and Splicer Block Outline Drawings Dimensions Inches (mm) LX3XXX Figure 5 3.47” [88.1] 1.94” [49.3] 0.97” 0.97” [25.0] [25.0] 5.00” [127.0] 0.97” 1.53” [38.9] [25.0] 2.61” [66.2] 1.53” [38.9] 3.38” [85.7] 4.00” [102] 1-pole LX4XXX Figure 6 2-pole [7.9] [57.9] [7.9] 4.13" 1.14" 1.88" [29.0] [47.8] .31" [7.9] [40.2] 1.58" 2.69" [40.2] [68.2] [217] [149] 1.58" [40.2] 4.75" [140] .37" .37" [9.