1、Wide Application: This switch is suitable for household distribution boxes, can match with all electrical equipments, suitable for various scenarios. 2、Silver Contact: This switch uses industrial silver contacts to improve electrical conductivity and increase service life. 3、Manual and Automatic Mode: Manual mode and automatic mode are optional, all in one design, which is convenient for you to choose and use according to the situation. 4、Stable to Use: When the normal power supply is abnormal, the backup power supply will work immediately, thus ensuring the continuity, reliability and safety of the power supply. 5、Ideal Replacement: This switch with outstanding performance, can be easily installed, ideal replacement for the old and damaged parts. Item Type: Automatic Transfer Switch Material: PP Flame Retardant, Silver Rated Current Ie: 100A Insulation Voltage Ui: AC690V, 50Hz Rated Voltage Ue: AC400V, 50Hz PC Grade: Can be Connected and Withstand, Without Breaking Short Circuit Current Category of Use: AC 33iB Pole: 2P Life: Electrical: 2000 Times Mechanical: 5000 Times Rated Condition Short Circuit Current Iq: 50kA SCPD (Fuse): RT16 00 63A Rated Impulse Withstand Voltage: 8kV Rated Control Voltage Us: AC220 V, 50Hz Correct Working Conditions: 85%Us to 110%Us Auxiliary Circuit: 2 Independent Relays, Each Relay Includes 2 Sets of Transformer Contacts Contact Capacity: AC220V 50HZ/60HZ Touch Time: Less Than 50ms Operation Transition Time: Less Than 50ms Return Time: Less Than 50ms Turn Off Time: Less Than 50ms 1 x Automatic Transfer Switch 4 x Terminal Block 1 x Instruction Manual