BBIT - Raychem heat-shrinkable busbar tubing Size 40/16

BBIT is a thick wall, heat-shrinkable tubing that provides insulation enhancement and protection against flashover and accidentally induced discharge. It is an ideal solution for confined spaces, as it can be used for both circular and rectangular copper aluminium busbars. 

  • UV resistant

  • Flame retardant

  • Extremely durable

  • Non-halogen based material reduces flammability

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The use of BBIT tubing allows equipment designers the freedom to reduce air spacing between busbars, such as in the manufacture of switch-gear cabinets where space is at a premium. BBIT tubing provides flashover protection up to 36 kV.

BBIT tubing can be used on both circular and rectangular copper or aluminium busbars.

On application of heating the tube its shrinks snugly over the busbar profile ensuring that required minimum wall thickness is obtained. BBIT tubing can be installed easily during large scale production using an oven or in the field using a gas torch or hot air gun. The tubing is manufactured from a non-halogen based polymer which has excellent performance in high voltage environments and reduces the noxious and corrosive effects in fire situations.

Features & Benefits:

  • Compatible with all other products in the Raychem MV insulation enhancement system
  • Excellent flexibility means BBIT can be installed on a wide range of curved or bent busbars without cracking or creasing
  • High shrink ratio reduces inventory and simplifies product selection
  • Exceptional insulation and long term reliability even at high continuous operating temperatures
  • Suitable for indoor and outdoor use.

For further information please see the PDF datasheet.

More Information
Quick Search Code 104986
  • Provides insulation enhancement 

  • Protects against flashover up to 36KV & accidentally induced discharge

  • Allows equipment designers the freedom to reduce air spacing between busbars, such as in the manufacture of switchgear cabinets where space is at a premium

Key Product Specifications Test Method Requirement 
Thermal endurance  IEC 216 105°C  min
Accelerated ageing -Tensile strength-Ultimate elongation ISO 188, ASTM D2671 168 hrs @ 120°C10 MPa min300% min
Comparative tracking index IEC 112, VDE 0303/1 KA 3c
Dielectric strength ASTM D149, IEC 243 180 KV/cm min @ 2mm150 KV/cm @ 2.5mm120 KV/cm @ 3mm
Smoke index  NES 711 Less than 120
Acid gas generation  Raychem PPS 3010 4.23 Less than 1% by weight 
Low temperature flexibility  ASTM D2671 Procedure C No cracking after 4 hrs @ -40°C
Flammability  ANSI C37.20/IEEE-27 No flame conveyance, 60 sec max.
Tracking & erosion resistance  ASTM D2303 No tracking, erosion to top surface or flame failure after 1 hr at 2.75Kv 1% max 

Spec Sheet Download


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