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UD-400A-112AL Single Pole Distribution Block


  • Ideal for solar applications
  • Tinned aluminium block allows for copper or aluminum cable
  • Screw retaining cover is hinged and removable
  • Design allows for visual inspection of conductor and confirmation of connection
  • Modular snap-together blocks for building multi-pole power blocks
  • Easily clips onto DIN rail or mounts to panel with screws
  • 95% fill ratio
  • Halogen free
  • RoHS compliant


Material: Aluminum; Thermoplastic
Finish: Tinned
Part Number UD-400112AL
Article Number 569252
Max Current Rating, IEC 400 A
Max Current Rating, UL/CSA 335 A
Short Term Withstand Current (Icw) 1s 24.5 kA
Peak Short Circuit Current (Ipk) 51 kA
Short Circuit Current Rating (SCCR) 10 kA
Max Working Voltage, IEC (Ui) 1,000 VAC
1,500 VDC
Max Working Voltage, UL (Vin) 1,000 VAC/DC
Line Side Number of Connections 1
Line Side Compact Stranded Wire Size 95 - 185 mm²
Line Side Wire Size 3/0 – 400 kcmil
Load Side Number of Connections 12
Load Side Compact Stranded Wire Size (12) 2,5 - 10 mm²
Load Side Stranded Wire Size - Ferrule (12) 2,5 - 10 mm²
Load Side Wire Size (12) #14 - #6
Enclosure Rating IP 20
Depth (D) 1.99"
Height (H) 3.79"
Width (W) 2.2"
Unit Weight 0.4 lb
Certification Details UL® 1059
Flammability Rating UL® 94V-0
Complies With IEC® 60947-7-1
Design Guideline for Distribution Blocks, Power Blocks and Power Terminals
Derating according to Ambient* Temperature (°F) to maintain working temperature of 185°F
Ambient Temperature (°F) 86° 95° 104° 113° 122° 131° 140° 149° 158° 167°
Derating Coefficient (d) 1 1 1 0.94 0.88 0.82 0.75 0.67 0.58 0.47
*environment around the terminal blocks inside the enclosure

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CSA, CSA-US and C-CSA-US are registered trademarks of Canadian Standards Association.
IEC is a registered trademark of the International Electrotechnical Commission.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.




EN 60947-7-1, 201 KB English
CSA 70044370
CSA C22.2 No. 158
cUR XCFR8.E198301
CSA C22.2 No. 158
EAC 02942 (Russian Federation)
3.27 MB Русско
UR XCFR2.E198301
ANSI/UL 1059


Engineering Specifications

Instruction Sheets

404 KB English