The dual-power automatic transfer switch (ATS) is a newly developed miniature household power transfer switch, is mainly used to test whether the main power or reserve power is normal. Micro-Breaking Dual Power Transfer Switch (hereinafter referred to as transfer switch) is suitable for AC 50/60Hz dual power supply system with rated operating voltage of 220V/400V and rated operating current form 63A. Optional transfer of dual power can be made according to requirement. The product owns short circuit function, as well as fire protection, double-break and output ON signal function. Both electric and operation and manual operation are available. Product name: Dual power automatic transfer switch Operation mode: manual and automatic Working frequency: 50/60Hz ATS level: CB level Rated voltage: AC440V Working voltage: AC220V Conversion time: less than equal 2S Use level: AC-33iB Conversion : self-inverting and self-recovering Colour:Grey white Material:PC plastic Size:150 x 138 x 115mm Package Contents: 1 x Automatic Transfer Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.