Re: Miniature Circuit Breaker (MCB’s)- Design Regarding

Home Electrical Engineering Forum General Discussion Miniature Circuit Breaker (MCB’s)- Design Regarding Re: Miniature Circuit Breaker (MCB’s)- Design Regarding


vivek_radhakrishnan said:

What is the role of the copper braid that is present in the MCB's. Can a MCB be used as a normal switch.

Will a MCB be able to take-up cyclic load as a normal switch. In case I use a MCB as a normal switch and conduct 40,000 operations will there be any distortion in the braid present in the MCB ?

The copper braid connects the moving element with the static element.

MCBs are designed as protection devices and expected to operate on an infrequent basis.

If you have an application that requires frequent operation, use the correct equipment such as a load break switch, operated manually, or a contactor operated electrically.

Most manufacturers who make MCBs also make switches and contactors that fit to DIN rails and in the same distribution board enclosures.