Prepunched copper bars

Punched copper bars are used mainly in distribution bar cabinets. Having a range of copper bars with single or double pre-drilled holes, you save time in assembly and processing bars in the wiring of electrical equipment.

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Teknomega pre punched copper bars with rounded corners are available with :

  • Length : 1750 mm
  • Thickness : 5 mm and 10 mm
  • Drilled with 10,5 mm diameter at 25 mm distance

Barra preforata in rame BRP1000 Barre preforate in rame

Prepunched copper bars | Tickness 5 - 10 mm - Length 1750 mm

CodeReferencePackingWeight (Kg)L (mm)s (mm)P (mm)D Ø (mm)B (mm)
BRP1000BRP 25X521,392552510,512,5
BRP1005BRP 50X523,395052510,512,5
BRP1010BRP 63X524,396352510,512,5
BRP1015BRP 80X525,698052510,512,5
BRP1020BRP 100X527,2410052510,512,5
BRP1025BRP 125X529,1912552510,512,5
BRP1030BRP 50X1026,7050102510,512,5
BRP1035BRP 60X1028,7960102510,512,5
BRP1040BRP 80X10211,3080102510,512,5
BRP1045BRP 100X10214,40100102510,512,5
BRP1050BRP 120X10218,30120102510,512,5

Ampacity (A) table of solid aluminium bars based on the T temperature rise as per standard DIN 43671. Reference room temperature Ta = 35°C

DimensionsSect. (mm²)T 30° CT 50° C

No. bars in parallel

IIIIIIII IIIIIIIIII II
25X512532758679589043377610531179
50X525058399412601411772131716691870
63X5315718119714941673951158619802217
80X54008851450175019601173192123192597
100X550010801730205022961431229227163042
125X562513002022238026661722267931533532
50X1050079214041897 105018612514 
60X1060091616002139 121421192834 
80X10800115319622595 152826003438 
100X101000138623063032 183630564017 
120X101200161826603478 214435244609 

Example of copper bar choice

In = 800 A - T max. = 85 °C - Ta = 35 °C  ΔT (See Table with ΔT = 50 °C)

Result:

  • Prepunched copper bar 63 x 5 mm (In = 951 A)
  • Solid copper bars: 65x5 (In = 951 A); 40 x 10 (In = 944 A)
  • Solid alluminium bar 50 x 10 (In = 874 A).