Recent questions tagged mccb

Description : Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.

Last Answer : i) Applications of fuse:  * Used in domestic installations to provide short circuit protection.  * Used in commercial / Industrial installations to provide overload and short circuit protection.  * Used in ...  * Rectifiers panels,  * U.P.S, Electronic equipment,  * Motors,  * Furnaces

Description : Give the working of MCCB.

Last Answer : Working of MCCB: ( Molded Case Circuit Breaker)  * The operating mechanism consisting of lever, spring, contacts etc. is used to open or close the MCCB electrically.  * The arc ... produced by short-circuit current operates the lever to trip the MCCB immediately and open the contacts. 

Description : State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch. 

Last Answer : i) MCB: Provide short circuit protection & over load protection to electrical loads.  ii) ELCB: Provides protection by detecting the unsafe magnitudes leakage currents flowing to earth and disconnecting ... rating.  iv) Switch: Make and break the electrical connection to the load manually.

Description : What is MCCB?

Last Answer : MCCB stand for moulded case circuit breaker. It is used for high current protection. MCCB have higher rating than MCB. Suppose MCB have rating up to 10 kA then MCCB will have rating of 100 kA.