Features 1、SAFE AND FLAME RETARDANT: Made of excellent flame retardant plastic materials, possess good insulation, high temperature resistant, aging resistant, safe and reliable 2、WITH SILVER CONTACTS: Using silver contacts in this product can greatly improve the conductivity and service life of the product 3、MINI AND PRACTICAL: Dual power automatic switch is a miniature household power switch, which is mainly used to test whether the main power supply or backup power supply is normal to ensure the continuity, reliability and safety of the power supply. This product is specially designed for rail installation, dedicated to PZ30 distribution box 4、MILLISECONDS SWITCHING WITHOUT INTERRUPTION: When the normal power supply is abnormal, the backup power supply works immediately, and the power supply is switched in milliseconds without interruption, more practical 5、WIDE APPLICATION: Switch to the backup power supply when there is a power failure, and switch to the main power supply when power recovery. Widely used in various places where continuous power failure is not allowed, like factories, shopping malls, nurseries, etc. Specification Item Type: Dual Power Automatic Transfer Switch Material: PC, silver Insulation Voltage: AC690V Rated Voltage: AC400V Coil Voltage: 220VAC Level: PC level Specifications: 4P Life: Electrical: 2000 Times; Mechanical: 5000 Times Rated Short Circuit Current: 50kA Fuse: RT16-00-63A Rated Impulse Withstand Voltage: 8kV Control Circuit: Rated Control Voltage Us: AC220V 85% Us-110% Us Auxiliary Circuit: Two Relays, Each Relay Has Two Sets of Contacts Capacity: AC220V50HZ le=5y Touch Time: <50ms Operation Transition Time: <50ms Return Time: <50ms Off Time: <50ms Package List 1 x Dual Power Automatic Transfer Switch 1 x User Manual