Application It can be applied to various scenarios such as elevators, surveillance, fire fighting, office buildings, etc. It is suitable for household electricity and various large places such as ports and terminals, banks and mechanical plants. 🔺(2P)Specification     Model: GCQ2-63/2 Color: Blue Material: Resin+ Steel Conversion Mode: Self-cast Display Function: Indicator Light Display Installation Dimension: 128mm*122mm/5*4.8in Hole: M6 ATS Level: CB Level Circuit Type: 2-way Mounting Type: Wall Mount International Protection Rating: IP63 Number of Positions: 2 Unit Count: 1 Use Level: AC-33iB Rated Voltage: AC400V Working Voltage: AC220V, 50/60HZ Rated Current: 63A Conversion Time: ≤2S Operation Way: Auto/Manual Package Size: 17.5*15*12.5cm/6.9*5.9*4.9in Product Size: 15.7*13.3*11.5cm/6.18*5.24*4.53inch Gross Weight: 1.45kg/3.2lbs 🔺(4P)Specifications Material: Flame-retardant Plastic, Copper, Iron Color: Blue, Grey Style: Modern, Simple Shape: Rectangle Operation Mode: Automatic or Manual Working Voltage: 220V Rated Voltage: 400V Rated Current: 63A Conversion Time: 1-2 Seconds Number of Poles: 4P ATS: CB Level Use Level: AC-33iB Gross Weight: 1.6kg/3.52lbs Net Weight: 1.45kg/3.19lbs Product Size: 22.5*13*12cm/8.85*5.11*4.72inch Package Size: 25.5*18*14.5cm/10.03*7.08*5.7inch Package Included 1 x Double Power Automatic Change-over Switch 1 x English Manual Notes 1.Please read the user manual carefully before use and pay special attention to the safety precautions included.