Features Compact Design: Small size, simple structure, and beautiful appearance make it space-saving and aesthetically pleasing, enhancing the overall look of your setup. Reliable Conversion: Single motor drive ensures a reliable and stable switch conversion, minimizing noise and impact, providing a silky operation experience. Electromechanical Interlock Protection: Equipped with electromechanical interlock protection to guarantee reliable and interference-free automatic switch operation, prioritizing safety. Manual Emergency Switching: Allows for automatic load change and manual emergency switching using the handle, providing flexibility and control in Decisive situations. Enhanced Distribution Security: With a 50KA breaking capacity, it ensures improved distribution security, offering enhanced protection for your electrical systems. Specification: Material: Plastic Weight: 1671g/58.9oz Model: NDQ1-63/4 Insulation voltage: 400 (V) Rated working voltage: AC 50Hz 400 (V) Rated current: 63 (A) Pole number: 4 Rated short time withstand current: 63A 3 optional working modes: Self-throw and self-reply working mode. Alternate working mode. Self - feeding and self - restoring working mode. 3 stable working positions: Common power supply and standby power supply. Common power supply, backup power supply. Common power supply points, standby power points. Use level: AC-33B, motor load or mixed load including motor, resistance load and white light load up to 30%. Package List: 1 x Automatic Transfer Switch Note: 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. Package List