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 POWR-BLOKSTM Distribution/Splicer Blocks and Covers
SPECIFICATIONS
Voltage Rating: 600V Amperage: Based on NEC Table 310.16, using 75C copper wire Material: Phenolic rated at 150C and Thermoplastic rated at 125C (LD1400 and LS1300 series only) Connector: Standard: Highly conductive aluminum, tin plated Copper: Highly conductive copper, tin plated Flammability Rating: 94V-0 Approvals: UL Recognized (File No. E171395) CSA Certified (File No. LR700111)
NEW
ORDERING INFORMATION Distribution Block Example Part No.
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.
Splicer Block Example Part No.
APPLICATIONS
Typical applications include heating, air conditioning and refrigeration systems, elevator systems, material handling equipment, control panels, motor controls, switchgear, and anywhere power needs to be distributed to more than one load.
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.
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. Manufacturers of cable terminations can furnish crimp-on sleeves for fine stranded conductors which permit these conductors to be used with box lugs.
Distribution Block Covers
Clear Plastic Covers
Littelfuse Part Number
LPBC0-2 LPBC0-3
Hinged Covers
Littelfuse Part Number
LCH132-1 LCH132-2 LCH132-3
For use with Power Distribution Block No.
LX0XXX-2 LX0XXX-3 LX2XXX-1 LX2XXX-2 LX2XXX-3 LX3XXX-1 LX3XXX-2 LX3XXX-3 LX4XXX-1 LX4XXX-2 LX4XXX-3 LX5XXX-1 LX5XXX-2 LX5XXX-3
For use with Power Distribution Block No.
LX2XXX-1DIN LX2XXX-2DIN LX2XXX-3DIN
NEW
LPBC2-1 LPBC2-2 LPBC2-3 LPBC3-1 LPBC3-2 LPBC3-3 LPBC4-1 LPBC4-2 LPBC4-3 LPBC5-1 LPBC5-2 LPBC5-3
Littelfuse's 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. Clear plastic covers are available for most blocks. New LX2XXX-DIN series blocks offer a hinged cover.
134
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
Distribution Block Selection Guide
Connector Configuration Mat'l Line Load Amp Rating Number per Pole of Poles 115 115 115 115 175 175 175 175 310 310 175 175 175 175 175 175 335 335 335 335 335 335 350 350 350 380 380 380 350 350 350 380 380 380 335 335 335 380 380 380 380 380 380 760 760 760 665 AL 665 665 1 2 3 4 2 3 2 3 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 1 2 3 1 2 3 Line Wire Range #2 - #14 #2 - #14 #2 - #14 #2 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 350mcm - #6 350mcm - #6 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 400mcm - #6 400mcm - #6 400mcm - #6 400mcm - #6 400mcm - #6 400mcm - #6 2/0 - #14 2/0 - #14 2/0 - #14 500mcm - #4 500mcm - #4 500mcm - #4 2/0 - #14 2/0 - #14 2/0 - #14 500mcm - #4 500mcm - #4 500mcm - #4 400mcm - #6 400mcm - #6 400mcm - #6 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 500mcm - #4 350mcm - #6 500mcm - #4 350mcm - #6 500mcm - #4 350mcm - #6 Load Figure Openings Wire Range Openings per Pole per Pole 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 1 1 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 #10 - #18 #10 - #18 #10 - #18 #10 - #18 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #4 - #14 #4 - #14 #4 - #14 #2 - #14 #2 - #14 #2 - #14 #4 - #14 #4 - #14 #4 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 #2 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 4 4 4 4 6 6 4 4 6 6 4 4 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 8 8 8 12 12 12 6 6 6 8 8 8 4 4 4 Littelfuse Catalog Number LD1400-1 LD1400-2 LD1400-3 LD1400-4 LD0401-2 LD0401-3 LD0402-2 LD0402-3 LD0404-2 LD0404-3 LD2570-1 LD2570-2 LD2570-3 LD2970-1 LD2970-2 LD2970-3 LD3552-1 LD3552-2 LD3552-3 LD3553-1 LD3553-2 LD3553-3 LD3555-1 LD3555-2 LD3555-3 LD3953-1 LD3953-2 LD3953-3 LD3955-1 LD3955-2 LD3955-3 LD4551-1 LD4551-2 LD4551-3 LD4560-1 LD4560-2 LD4560-3 LD5552-1 LD5552-2 LD5552-3 LD5579-1 LD5579-2 LD5579-3 LD5586-1 LD5586-2 LD5586-3 LD5587-1 LD5587-2 LD5587-3
NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW
AL
2 2 2 2 1 1 1 1 1 1 3 3 3 3 3 3 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 7 7
AL
AL
AL
NEW NEW
AL
CU
AL
AL
AL
CU
CU
AL
AL
AL
AL
AL
135
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
Distribution Block Selection Guide
Connector Configuration Mat'l Line Load Amp Rating Number per Pole of Poles 760 760 760 380 380 380 760 760 760 760 760 760 175 175 175 175 175 175 175 175 175 175 175 175 1 2 3 1 2 3 1 2 3 1 2 3 1 1 3 Adder 1 1 3 Adder 1 1 3 Adder Line Wire Range 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 Openings per Pole 2 2 2 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 Load Wire Range Openings per Pole #4 - #14 #4 - #14 #4 - #14 #2 - #14 #2 - #14 #2 - #14 2/0 - #14 2/0 - #14 2/0 - #14 #2 - #14 #2 - #14 #2 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 #4 - #14 12 12 12 8 8 8 8 8 8 12 12 12 4 4 4 4 6 6 6 6 4 4 4 4 Figure 7 7 7 7 7 7 7 7 7 7 7 7 4 4 4 4 4 4 4 4 4 4 4 4 Littelfuse Catalog Number LD5592-1 LD5592-2 LD5592-3 LD5594-1 LD5594-2 LD5594-3 LD5986-1 LD5986-2 LD5986-3 LD5992-1 LD5992-2 LD5992-3 LD2570-1DIN LD2570-2DIN LD2570-3DIN LD2570-ADIN LD2580-1DIN LD2580-2DIN LD2580-3DIN LD2580-ADIN LD2970-1DIN LD2970-2DIN LD2970-3DIN LD2970-ADIN
NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW
AL
AL
CU
CU
AL
AL
CU
136
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
Splicer Block Selection Guide
Connector Configuration Mat'l Line Load Line Load Amp Rating Number Figure per Pole of Poles Wire Range Openings Wire Range Openings per Pole per Pole 310 310 115 115 115 115 150 150 150 115 115 115 175 175 175 255 255 255 255 255 255 310 310 310 420 420 420 620 620 620 760 760 760 175 175 175 175 175 175 175 175 2 3 1 2 3 4 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 A 1 2 3 A 350mcm-#6 350mcm-#6 #2 - #14 #2 - #14 #2 - #14 #2 - #14 1/0 - #18 1/0 - #18 1/0 - #18 #2 - #14 #2 - #14 #2 - #14 2/0 - #14 2/0 - #14 2/0 - #14 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 350mcm-#6 350mcm-#6 350mcm-#6 600mcm-#4 600mcm-#4 600mcm-#4 350mcm-#4 350mcm-#4 350mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 1 1 350mcm-#6 350mcm-#6 #2 - #14 #2 - #14 #2 - #14 #2 - #14 1/0 - #18 1/0 - #18 1/0 - #18 #2 - #14 #2 - #14 #2 - #14 2/0 - #14 2/0 - #14 2/0 - #14 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 250mcm-#6 350mcm-#6 350mcm-#6 350mcm-#6 600mcm-#4 600mcm-#4 600mcm-#4 350mcm-#4 350mcm-#4 350mcm-#4 500mcm-#4 500mcm-#4 500mcm-#4 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 2/0 - #14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 3 5 5 5 5 5 5 5 5 5 6 6 6 7 7 7 7 7 7 4 4 4 4 4 4 4 4 Littelfuse Catalog Number LS0303-2 LS0303-3 LS1300-1 LS1300-2 LS1300-3 LS1300-4 LS2121-1 LS2121-2 LS2121-3 LS2552-1 LS2552-2 LS2552-3 LS2572-1 LS2572-2 LS2572-3 LS3123-1 LS3123-2 LS3123-3 LS3124-1 LS3124-2 LS3124-3 LS3126-1 LS3126-2 LS3126-3 LS4557-1 LS4557-2 LS4557-3 LS5129-1 LS5129-2 LS5129-3 LS5301-1 LS5301-2 LS5301-3 LS2572-1DIN LS2572-2DIN LS2572-3DIN LS2572-ADIN LS2972-1DIN LS2972-2DIN LS2972-3DIN LS2972-ADIN
NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW
AL
AL
CU
AL
AL
AL
CU
AL
AL
AL
AL
AL
CU
137
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
LX0XXX
.07"
[1.8]
.218 x .375"
[5.5 x 9.5]SLOT
.07"
[1.8]
.218 x .375"
[5.5 x 9.5]SLOT
2.90"
[73.7]
2.90"
[73.7]
1.00"
[25.4]
1.00"
[25.4]
3.38"
[85.8]
4.63"
[118]
3.52"
[89.3]
.65 x .375"
[6.7 x 9.5] SLOT
4.73"
[121]
3.38" .265 x .375"
[6.7 x 9.5] SLOT [85.8]
4.13"
[104.8]
5.38"
[137]
2 POLE
3 POLE
Figure 1
LX1XXX
1.52 [38.7]
1 POLE
2 POLE
3 POLE
4 POLE
Figure 2
LX2XXX
1.13"
[28.6]
1.94"
[49.2]
2.75"
[69.9]
1.62"
[42] .205 [5.2] DIA. HOLE
.31"
[7.9]
.56"
[14]
.56"
[14]
.56"
[14]
1.78"
[45.2]
.63"
[16.1]
2.25"
[57.2]
2.25"
[57.2]
2.25"
[57.2]
2.88"
[73.0]
2.88"
[73.0]
2.88"
[73.0]
.62"
[16]
.62"
[16]
1 POLE
2 POLE
3 POLE
Figure 3
138
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
LX2XXX-DIN
2.42 [61.5]
1 POLE
2 POLE
3 POLE
Figure 4
ADDER
LX3XXX
.97"
[25]
1.94"
[49.3]
3.47"
[88.1]
5.00"
[127.0]
2.61"
[66.2]
.97"
(25)
1.53"
[38.9]
.97"
[25]
1.53"
[38.9]
3.38"
(85.7)
3.38"
(85.7)
3.38"
[85.7]
4.00"
[102]
4.00"
[102]
4.00"
[101.6]
.31"
[7.9]
1.17"
[29.7]
.31"
[7.9]
1.17"
[29.7]
.31"
[7.9]
1.17"
[29.7]
1 POLE
2 POLE
Figure 5
3 POLE
139
POWR-BLOKSTM Distribution/Splicer Blocks and Covers
LX4XXX
2.28" .31"
[7.9] [57.9]
4.16"
[106]
6.04"
[153]
1.14"
[29.0]
.31"
[7.9]
.31" 1.14"
[29.0]
2.92 (74.0)
[47.8]
1.88"
[47.8]
[7.9]
1.14"
[29.0]
1.88"
[47.8]
1.88"
4.13"
[105]
4.13"
[105]
4.13"
[105]
4.75"
[121]
4.75"
[121]
4.75"
[121]
1 POLE
2 POLE
3 POLE
Figure 6
LX5XXX
3.17"
[80.4]
5.88"
[149]
8.54"
[217]
1.58"
[40.2]
1.58"
[40.2]
2.69"
[68.2]
1.58"
[40.2]
2.69"
[68.2]
2.30"
[58.5]
3.12"
[79.2]
4.75"
[121]
4.75"
[121]
4.75"
[121]
5.50"
[140]
5.50"
[140]
5.50"
[140]
.37"
(9.5)
.37"
[9.5]
.37"
[9.5]
1 POLE
2 POLE
3 POLE
Figure 7
140


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