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UD-400A-212AL Single Pole Distribution Block


  • Ideal for solar applications
  • Increase the number of outputs with one input using a jumper
  • 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
  • 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-400212AL
Article Number 569251
Max Current Rating, IEC 400 A
Max Current Rating, UL/CSA 400 A
Short Term Withstand Current (Icw) 1s 24.5 kA
Peak Short Circuit Current (Ipk) 51 kA
Short Circuit Current Rating (SCCR) 100 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 2
Line Side Compact Stranded Wire Size 35 - 95 mm²
Line Side Wire Size #8 – 3/0
Load Side Number of Connections 12
Line Side Max Conductor Size, UL 3/0 AWG
Load Side Compact Stranded Wire Size (12) 2,5 - 10 mm²
Load Side Max Conductor Size, UL #6
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 0.35 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

400 KB English