Features: Ensure uninterrupted power supply with the 4Pole 100A , featuring super fast 0.05 second Double power switching for home generators during outages. designs with a strong housing and DIN rail mounting, this automatic transfer Switches offers 100A current capacity, 110v/220v/220V compatibility, and build in over/under electric defense . Ideal for homeowners, users, and facility managers requiring reliable backups power solution for critical systems like medicine equipment or data centers. Seamlessly change power sources in residential setting , hospitals, cold storage unit , or emergency systems during failures or generator activation. The 4 poles electrical design ensures secure connection between Double power inputs while meeting strict safety standards for indoor/outdoor generator installations. Specifications: Project type: Double power supply automatic conversion Switches Component : PC Switches type: secondary power distribution rate current: 100A rate electric : 110VAC/220VAC (optional) Insulation electric : 690VAC Rate frequency: 50Hz 60Hz Electrical grade: PC-level isolation type rate impact resistance electric : 8KV Touch Time: Convert Time: Return Time: Close Time: Package Includes: 1xAutomatic Transfer Switches note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.