TYPES OF MCB

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5 types of MCB

• 1. B Type
• 2 . C Type
• 3 . D Type
• 4 . K Type
• 5 . Z Type

B Type

Tripping current 3 to 5 time . Operating time 0.04 to 1 sec

Usegs – House , Resistive load

       C Type

Tripping current 5 to 10 time Operating time 0.04 to 5 sec

Useges – Motor , Inductive load refrigerator.

 

 D Type

        Tripping current 10 to            30 time Operating time         0.04 to 3 sec

Usegs – welding Machine , x ray

K Type

      Tripping current 8 to 12         time Operating time <           0.01 sec

      

   

 Z type

     This is hardly sensitive         MCB . Tripping current 8       to 12 time . Operating             time <0.01 sec

      usegs – Electronic                circuit

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