Overview:_x000D_ NLQ1 intelligent double power automatic switch (hereinafter referred to as the switching device), suitable for AC 50/60hz, rated working voltage 400V, rated current from 16~1250A double power supply system. In case of failure of common power supply, switching device can realize automatic switching with standby power supply or generator to ensure the reliability and safety of power supply. Also can carry on the selective switch between two power sources according to the load need. Products with overload, undervoltage, short circuit, off - phase protection functions. Especially suitable for fire control, airport, TV station, hospital, shopping mall, bank, chemical industry, metallurgy, high-rise building and military facilities and other important places where power failure is not allowed, as an important electrical device to ensure continuous power supply._x000D_ _x000D_ Features:_x000D_ _x000D_ Small size, simple structure, beautiful appearance, easy to operate, long service life. _x000D_ Switch conversion drive adopts single motor drive, simple structure, reliable and stable conversion, no noise, small impact. _x000D_ Switch with electromechanical interlock protection, to ensure that the automatic switch reliable operation, non-interference. _x000D_ The switch can automatically change the load, and the handle can be used to switch manually in case of emergency. _x000D_ Use level: AC- controller protection fuse breaking capacity of 50KA, improved distribution security. _x000D_ Interlock is added between manual operation mode and automatic operation mode to ensure that manual operation cannot be performed under automatic condition. _x000D_ Automatic switch does not switch when breaking handle, bonding contact or load failure (overload, short circuit), truly realize electromechanical interlock. _x000D_ The escapement mechanism of MCB automatic change-over switch is changed from fork type to concave type, which can solve the problems such as the fracture of MCB lengthened handle and the asynchronous closure of MCB, restore the function of quick closing and quick breaking of MCB, and effectively improve the mechanical life of the product. _x000D_ _x000D_ Specification:_x000D_ Material: Plastic_x000D_ Weight: 1300g/45.9oz_x000D_ Model: NDQ1-63/2P_x000D_ Insulation voltage: 400 (V)_x000D_ Rated working voltage: AC 50Hz 230 (V)_x000D_ Rated current: 63 (A)_x000D_ Pole number: 2_x000D_ Rated impulse withstand voltage: 1 (KV)_x000D_ Rated short time withstand current: 63A_x000D_ 3 optional working modes:_x000D_ Self-throw and self-reply working mode._x000D_ Alternate working mode._x000D_ Self - feeding and self - restoring working mode._x000D_ 3 stable working positions:_x000D_ Common power supply and standby power supply._x000D_ Common power supply, backup power supply._x000D_ Common power supply points, standby power points._x000D_ Use level: AC-33B, motor load or mixed load including motor, resistance load and white light load up to 30%._x000D_ _x000D_ Package List:_x000D_ 1 x Automatic Transfer Switch_x000D_ _x000D_ _x000D_ _x000D_ Note:_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.