Features The use of silver contacts can greatly improve the conductivity and service life of the product. Built-in regular standby opening signal output port, which can be connected with signal indicator light, which is convenient for observation outside the cabinet Using high quality fireproof plastic material, good insulation, high temperature resistance, anti-aging, safe and reliable When the normal power supply is abnormal, the backup power supply will work immediately to ensure the continuity, reliability and safety of the power supply. Suitable for switching to backup power supply when power is cut off and switch to main power supply when power comes in Specification: Item Type: Dual Power Automatic Transfer Switch Model No.: ZGQ5-100/4P Material: Plastic Purpose: Switch to backup power supply when power fails and switch to main power supply when power arrives Working frequency: 50-60HZ Rated current: 100A Rated Voltage: AC110-230V Working Voltage: AC220V Operating mode: Automatic and manual ATS: CB level Conversion time: ≤0.05(S) Number of Poles: 4P Package List: 1 x Dual Power Automatic Transfer Switch 1 x User Manual Package List 1 x Dual Power Automatic Transfer Switch 1 x User Manual