Saturday, 19 March 2016

What is the difference between MCB and MCCB

What is the difference between MCB and MCCB


MCB - Miniature Circuit Breaker

Singe pole mcb
   


Two pole MCB

3 Pole MCB


4 pole MCB
Characteristics.
   
  • Rated current not more than 100 A.
  • Trip characteristics normally not adjustable.
  • Thermal or thermal-magnetic operation.

MCCB - Moulded Case Circuit Breaker




Characteristics.

   
  • Rated current up to 1000 A.
  • Trip characteristics often fully adjustable including configurable trip thresholds and delays.
  • Usually electronically controlled—some models are microprocessor controlled.

  • Often used for main power distribution in large industrial plant, where the breakers are arranged in draw-out    enclosures for ease of maintenance.















8 comments :

  1. MCB is Thermal protective device and MCCB is thermal and magnetic protective device.

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  8. check it also https://www.basicelectricalengineering.com/2016/03/what-is-difference-between-elcb-and-rccb.html

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