Feature: 1. [PRODUCT STRUCTURE] Adopt double row composite contacts, transverse pull structure, micro motor advanced energy storage and microelectronic control, basically realize zero arc overcurrent. 2. [INTERLOCK DEVICE] The load isolation actuating switch is equipped with a mechanical interlock device to ensure the reliable operation of the main and standby power supply without mutual interference. 3. [ISOLATION TYPE] The dual power automatic transfer switch has apparent switch position indication, hanging lock and other functions to realize safe isolation between power supply and load. 4. [CIRCUIT PROTECTION] The automatic transfer switch supports a variety of protection functions, including short circuit, overload, phase loss and undervoltage protection, safe and reliable. 5. [APPLICABLE PLACES] With mechatronic design, the switch can be used in families and public places, especially in office buildings and public places that need fire protection, simple and practical. Specification: Item Type: Dual Power Transfer Switch Model: SJCSQ2 250 4P Material: ABS, Aluminum Alloy Rated Working Voltage: AC400V Control Voltage: 220V Rated Current: 250A Rated Insulation Voltage Ui: 750V Use Category: AC-33A Rated Power: 50HZ Breaking Capacity: Icm 5KA Grade: CB. Package List: 1 x Transfer Switch6 x Gaskets1 x Handle