Cut Sheet
Blocks AND tERMINAls sINglE-PolE DIstRIButIoN Blocks
Spec-01140 F
EQUIPMENT PROTECTION PowER AND GRouNDING coNNEctIvIty 8
Unit Dimensions
Catalog Number Depth D (in.) Height H (in.) Width W (in.) Unit Weight (lb.) Qty.
UD250A 1.99 3.79 1.93 0.93 1
Max Current
Rating, IEC
Max Current Rating,
UL/CSA
Short Term Withstand Current
(Icw) 1s
Peak Short Circuit
Current (Ipk)
Short Circuit Current Rating
(SCCR)
Max Working Voltage,
IEC (Ui)
Max Working Voltage,
UL (Vin)
250 A 255 A 24.5 kA 51 kA 100 kA 1,000 VAC/DC 600 V
Line Side
Number of
Connections
Line Side
Compact
Stranded
Wire Size
Line Side
Wire Size
Load Side
Number
of Connections
Load Side Compact
Stranded Wire Size
Load Side Stranded
Wire Size - Ferrule
Load Side
Wire Size
1 35 – 120 mm² #6 – 250 kcmil 11 (2) 6 – 35 mm² (4) 2,5 – 10 mm² (5) 2,5 – 16 mm² (2) 6 - 25 mm² (4) 2,5 - 10 mm² (5) 2,5 - 16 mm² (2) #8 - #1 (4) #8 - #6 (5) #8 - #4
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
uD-400A sINGlE PolE DIstRIButIoN Block
INDustRy stANDARDs
FEAtuREs
connections
Design allows for visual inspection of conductor and
confirmation of connection
95% fill ratio
Halogen free
sPEcIFIcAtIoNs
FINIsh
+
:
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