25BU Range | 25,000 Volts | 800 Amp | High Voltage Half Couplers

The IP68 25BKA high voltage aluminium coupler is suitable for use in Non-Ex operations such as opencast and metalliferous mining, as well as tunnelling projects.

The 25BKA is based off of the innovative design of international partner company AusProof’s flagship 224BKA, the first coupler in the world to be rated at 22,000V. Further exploring into the unknown of electrical cable couplers and current understanding, the design of the 25BU takes this innovation one step further. Rated for 800 amps with an operating voltage of 25,000 volts, the 25BU has been in service since 2006. The 25BKA also features a guide pin that will become enclosed in the body casting of the coupler when the system is closed, protecting it from external damage.

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  • Features

    • IP68 Rating
    • Less bolts to make a join
    • Earth Pilot Connector
    • Solid face and body casting
    • Silicone Phase Connectors
    • Higher mPa Aluminium Material
    • Detachable Adaptor Flange
    • Handles
    • All air expelled on joining
    • Silicone seal for face
    • Full phase to phase segregation with earth
    • Arc extinguishing Phase Insulators
    • Genderless design
  • Accessories

    • LED Live Line Indicator
    • Adaptor – Gear Mount
    • Cast Protection Cover
    • Silicone Phase Connectors
    • Crimp Contacts
    • Soldered Contacts
    • Gland – Armoured
    • Gland – Unarmoured
    • Insulated End Cover
    • Slide Hammer
    • Coupling Tool
    • CAT Skid

Technical Information

  • Specs

    Volts 25,000
    Amp 800
    LOA (mm) 810
    Weight (KG) 22.5
    Material Aluminium
    Volume (Litres) 4.9

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  • Test Results

    Through Fault Current at 10 minute intervals 3 Tests of 20kA for 0.3 second
    1 Test of 20kA for 1.0 second
    AC HV Withstand 52kV for one minute
    Temperature Rise 800 amp for 5 hours with stable temperature within percentage of ambient temperature
    Ingress Protection IP68