Features 【High performance】: silver contacts are used for movement and statics, which greatly improves the conductivity and service life of the product. 【Built-in Output Port】: Built-in normally standby opening signal output port, which can be connected to the signal indicator. 【High-quality materials】: use of flame retardant plastic material, good insulation, high temperature resistance, safe and reliable. Function: When the normal power supply is abnormal, the emergency power supply works immediately to ensure the continuity of the power supply. 【Easy to use】:Small, easy to carry and store, convenient to use and with good performance. Specifications: Item type: dual power automatic transfer switch. Material: plastic. Purpose: switch to the emergency power supply when the power fails, and switch to the main power supply when the power arrives. Operating frequency: 50-60Hz. Rated current: 100 A. Rated voltage: AC110-230V. Operating voltage: AC 220 V. Operating mode: automatic and manual ATS: CB level Conversion time: ≤0.05 (S). Number of poles: 2P How to use: 1. Place the automatic dual power switch on the debugging platform and connect the corresponding power line in the correct phase sequence. The phase line and neutral line are connected in position and cannot be connected incorrectly. 2. When debugging the three-pole switch, the common and replacement neutral conductors should be connected to the neutral terminal (NN and RN). 3. Set the automatic dual power transfer switch to work in self-rotation and self-reset mode. If the voltage of the two power supplies is normal, the switch should be placed in the position of the common power supply and the common power supply should be closed. 4. Set the common power supply NA, NB, NC, NN for each phase failure, the dual power supply should be automatically converted into the emergency power supply, when the shared power supply returns to normal, it should be converted back to the common power supply. 5. Adjust the voltage of any phase of the shared power supply to the preset low voltage value, and the dual power supply should automatically switch to the standby power supply. When the normal power supply is back to normal, the switch should return to normal power supply. Packing list: 1 x dual power automatic transf Package List 1 x Dual Power Automatic Transfer Switch 1 x User Manual