my mt mu mcb is mainly suitable for overload and short circuit protection.it is especially used for illumination and distribution in industry and commerce.it is of pleasing outlook&high breaking capacity etc.its frame and parts adopts plastics of light weight,reliable performance,high inflammable resistance and shock resistance for long service life.it is mainly used for overload and short circuit protection within the circuit of ac 50/60hz,rated voltage of single pole up to 240v,two,three or four pole to 415v.it can also be used for an unfrequnet switchover of the circuit and illumination under normal conditions.