Overview:_x000D_ Micro new double power automatic switch, suitable for AC 50Hz, rated working voltage 400V and below the double power supply system, with automatic or manual operation to complete the conversion between the common power supply and the standby power supply. The switch is mainly used in hospitals, shops, Banks, metallurgy, high-rise buildings, military facilities and other important occasions where power failure is not allowed._x000D_ _x000D_ Features:_x000D_ _x000D_ High quality double power automatic switch, strong anti-interference ability, high precision. _x000D_ Complete protection function, with overload, short circuit protection. _x000D_ Small size, high breaking, short arc, compact structure, beautiful appearance. _x000D_ Noise-free operation, energy-saving, convenient installation, simple operation, stable performance. _x000D_ The product has overload, short circuit function, but also has the function of output closing signal. _x000D_ _x000D_ Specification:_x000D_ Material: Plastic_x000D_ Weight: 1580g/55.7oz_x000D_ Model: NDQ1-63/3_x000D_ Insulation voltage: 300 (V)_x000D_ Rated working voltage: AC 50Hz 400 (V)_x000D_ Rated current: 63 (A)_x000D_ Pole number: 3_x000D_ Rated impulse withstand voltage: 0.6 (KV)_x000D_ Rated short circuit capacity: 3KA_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_ Note:_x000D_ 1. When wiring, commonly used power N should enforce access common power supply circuit breaker QN standby power R should enforce access the standby power supply circuit breaker QR when QN quadrupole is broken and chronological, connection mode according to the wiring diagram, including QN and QR 1, 3, 5 for three-phase terminal, 2, 4, 6, for the three-phase line end, 7 zero line into the terminal, eight is zero line end of line. If the circuit breaker is a three-level circuit breaker, the neutral NN of the common power supply (N) and the neutral NR of the standby power supply (R) must be connected to the neutral terminal of the three-pole dedicated wiring at the same time._x000D_ 2. The working power of the double power switch automatic controller is taken from the incoming terminal and zero line of the new circuit breaker QN and QR. During the installation and wiring of automatic power switch, do not shake off, break or short circuit the original control line connected to the incoming line.