Published: 30 January 2008
Category: Q&A
Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, about information on discrimination in commercial applications, is answered by SELECT:
Question: Please could you advise me on the subject of discrimination. Is there a chart available that lays out the discrimination between different circuit breakers, ie: 50A MCB and a 32A RCCBO? Also, if one had a 100A consumer board, what would you protect it with in a commercial situation (for example, the consumer board would be feeding the office section of the warehouse)?
Answer: Discrimination details of protective device(s) can be obtained directly from manufactures such as ABB, Eaton MEM, MK, Legrand etc. The consumer board (distribution board) in a commercial situation could be supplied via a 100A single- or three-phase circuit breaker (perhaps Type C) at the mains position within the main distribution board, and individual circuit protection would be by circuit breakers within the office unit.
Answer: Discrimination details of protective device(s) can be obtained directly from manufactures such as ABB, Eaton MEM, MK, Legrand etc. The consumer board (distribution board) in a commercial situation could be supplied via a 100A single- or three-phase circuit breaker (perhaps Type C) at the mains position within the main distribution board, and individual circuit protection would be by circuit breakers within the office unit.
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