Features High-Quality Dual Power Switch: Enjoy strong anti-interference ability and high precision with this automatic transfer switch, ensuring reliable power transfer when needed. Complete Protection Function: Benefit from overload and short circuit protection, providing peace of mind and safeguarding your electrical system. Compact and Stylish Design: Experience a small size, high breaking capacity, and noise-free operation for a space-saving and aesthetically pleasing addition to your setup. Energy-Efficient and Convenient: Save energy with noise-free operation, and enjoy simple installation and stable performance for hassle-free use. Multi-Functionality: This product not only offers overload and short circuit protection but also provides an output closing SIGN, enhancing its utility for various applications. Specification: Material: Plastic Weight: 1580g/55.7oz Model: NDQ1-63/3 Insulation voltage: 300 (V) Rated working voltage: AC 50Hz 400 (V) Rated current: 63 (A) Pole number: 3 Rated impulse withstand voltage: 0.6 (KV) Rated short circuit capacity: 3KA 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: 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. 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. Package List