Adjustable MCCB's?

Discussion in 'Electricians' Talk' started by Virtual Voodoo, Apr 8, 2008.

  1. Virtual Voodoo

    Virtual Voodoo New Member


    Just want to pick you commercial guys brains again!

    Adjustable MCCB incomers which are rated at say 250A and are adjustable between 200-250A.

    Does that mean that if set at 200A and the Panel board draws more than 200A on it's combined out goers for a pre-determined time it will trip out?

    Also in the same vane does a Non-auto 250A MCCB just trip out at more than 250A, much the same as a basic MCB but on the incoming side of the board?
  2. Lectrician

    Lectrician Screwfix Select

    Yes and yes, according to the current curve.

    But ten points for what the other adjustment is ;)
  3. sinewave

    sinewave Screwfix Select

    > But ten points for what the other adjustment is ;-)

    Adjustable Thermal or Magnetic releases!


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