BMQ1 series double power automatic transfer switch is CB grade product independently developed and manufactured by MINGRI .A reversible motor and driving mechanism are used to drive two circuit breakers as the main body of dual power supply, and the dual power supply is automatically converted through the controller. Circuit breaker itself has the function of over current protection, compared with similar products, with small volume, low cost, high performance, high reliability and other characteristics. Used for ac 50Hz, rated working voltage ac 400V and below, rated working current to 800A two-way power supply system (grid-grid, grid-generator set).When the power supply of one circuit fails, it can be automatically converted to the other circuit to realize the automatic conversion between the common power supply and the standby power supply. It is widely used in hospitals, shopping malls, Banks, chemical industry, metallurgy, high-rise buildings, military facilities and other important occasions where power failure is not allowed. In 2014, the company added bmq1w-100g dual power automatic switching device, which is a pc-level dual power supply with BMG isolation switch as the actuator.