- MCB - Miniature Circuit Breaker can withstand <250 KW.
- MCCB - Moulded Case Circuit Breaker can withstand 250 to 500 KW.
- RCCB - Residual Current Circuit Breaker can withstand 500 to 1000 KW.
- ELCB - Earth Leakage Circuit Breaker can withstand 1000 to 5000 KW.
For above 5000 KW the following Circuit Breakers are used depends upon the Applications,
- ACB - Air Circuit Breaker (>5000 KW)
- VCB - Vaccum Circuit Breaker (>5000 KW)
- OCB - Oil Circuit Breaker (>5000 KW)
- SF6 CB - Sulfur Hexa Floride Circuit Breaker (>5000 KW)
- CO2 - Corbandi-oxide Circuit Breaker (>5000 KW)