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Eta-com UK - Cast-Resin Insulated Busbars

Cast Resin Insulated Busbars - Cast-Resin Bus Bars IP65 IP68.7

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The ‘betobar-r’ busbar, produced in Belgium, consists of copper or aluminium conductors embedded in an enclosure of a non flammable, self-extinguishing and homogeneous insulation mix, based on epoxy cast-resin with mineral fillers, ensuring high mechanical strength and chemical withstand. Standard types are available for current ratings + 6300A and voltage ratings up to 17.5kV. Systems for higher current ratings or DC applications are possible on request.

The busbar line consists of a number of prefabricated elements. The electrical jointing of the conductors is achieved by means of double fish plates and high tensile steel bolts. The junctions and the element ends are overcast with the same insulation mix as used for the elements. In this way, an integral insulating enclosure IP66/IP68 is guaranteed over the full length of the busbar run. Straight junctions and elbow junctions are available, each facilitating installation adjustments of 0-20mm per standard junction.

Element Shapes

The ‘betobar-r’ busbar system is available in a wide range of standard element shapes, forms and lengths fabricated to suit the typical project requirements:

  • Straight elements
  • Elbow elements, horizontal & vertical
  • Z (double elbow) & T elements
  • Flanged terminal elements
  • Tap-off facilities & phase-transfer elements
  • Thermal expansion compensation elements
  • Tailor-made terminal elements for transformer, generator or switchboard connection


The most important advantages of the ‘betobar-r’ system are:

  • High short-circuit withstand
  • Non flammable, self-extinguishing insulation to IEC 60332-3-10 & DIN 4102 part 1
  • Electrical continuity E30 – E120 to DIN 4102 part 12 available
  • Fire-proof wall bushing A0, A60, H60, E1120
  • Fire resistant to IEC 60331-21 (LV)
  • Excellent resistance to atmospheric pollution & a wide range of chemicals (list on request)
  • Integral insulation & a high degree of protection up to IP68/IK10
  • Suitable for tropical climates (withstands rodents, insects, fungi)
  • Easy assembly & short installation times - supervision team available
  • Maintenance free
  • Explosion proof: ATEX & IEC Ex certified on request


The ‘betobar-r’ busbars can be supplied in the following standard types:

For Low Voltage:

Up to 1000 V AC 50-60 Hz, following IEC 61439-1&6 phase conductors and/or:

  • Protective earth 50, 100, 150 & 200% neutral
  • Alu-conductors range up to 5000 Amps
  • Cu-conductors range up to 6615 Amps
  • For DC applications up to 8000 Amps & 1500 V DC
  • To IEC-61439-2 400 to 6500 Amps - 1000 V
  • Models with 3 phase: 3- & 4-wire with full size neutral & earth conductor

For Medium Voltage:

Following IEC 62271-201:

Type    Current Rating    Voltage Rating

SH       up to 1885 A       up to 7.2 kV

PH       up to 6140 A       up to 17.5 kV

  • To IEC-62271-201
  • In compact types for 3.6 - 7.2 - 12 & 17.5 kV - 50-60Hz
  • Higher current/voltage ratings on request

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eta-com Product Range betobar busbar

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Eta-com UK Preedcrete Ltd
2nd Floor Afon House
Worthing Road
RH12 1TL

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Tel: 01403 265767
Fax: 01403 254131

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