Feature 1 FLAME RETARDANT MATERIAL: Made of good quality flame retardant plastic materials, has good insulation, high temperature resistant, aging resistant, safe and reliable 2 SILVER CONTACTS IMPROVE CONDUCTIVITY: The use of silver contacts in this product can greatly improve the conductivity and service life of the product, convenient to use 3 WITHOUT INTERRUPTION: When the normal power supply is abnormal, the backup power supply works immediately, which ensures the continuity, reliability and safety of the power supply 4 EXQUISITE CRAFTSMANSHIP: Isolation and interference resistant, self casting and self duplexing, bring stable performance, you can use with confidence 5 WIDE APPLICATIONS: Support millisecond switching, manual or automatic, possess a wide range of applications contain families, shopping malls, factories, farms, etc.Item Type: Dual Power Automatic Transfer SwitchProduct Model: NLQ4-125/4PSwitch Type: Secondary power distributionRated Current: 100ARated Voltage: 400V ACRated Frequency: 50Hz/60HzElectrical Grade: PC gradeRated Impulse Withstand Voltage: 8kV Package List1 x Dual Power Automatic Transfer SwitchNote1. Detection Control Voltage: 50Hz, AC220V. The coil in the control circuit should not be too long. The cut surface area of the copper wire should not be larger than 2.0mm.2. According to the installation requirements of the power distribution system, please be equipped with appropriate circuit breakers to ensure the safety of staff and equipment.