MCB (Miniature Circuit Breaker) – Construction, Working ... What is Miniature Circuit Breaker (MCB)? An MCB or miniature circuit breaker is an electromagnetic device that embodies complete enclosure in a molded insulating material. The main function of an MCB is to switch the circuit, i.e., to open the circuit (which has been connected to it) automatically when the current passing through it (MCB) exceeds the value for which it is set. Material Testing Equipment - Construction Material Testing ... Accro-Tech Scientific Industries is a well established manufacturer of material testing equipment like highway material testing equipment and construction material testing equipment & measuring instruments. All material testing equipments offered are in adherence to industry regulations and are ideal for testing materials like cement, bituminous, aggregates, glass, asphalt, soil and more. top 5 construction equipment company in malaysia Construction Asia, Malaysia pop Chunyu Construction Sdn Bhd is an engineering and construction company for both, Specialty Chemical and Equipment ... Click to chat 2017-3 .    Read More