Enclosed bus duct and bus duct are the same thing.Enclosed bus duct is a bus system composed of metal plates(steel or aluminum plates),conductive bars,insulation materials,and related accessories.This product can be made into a plug-in enclosed busbar with a large spacing,or has a feeding function without a junction box in the middle.The conductor and shell of the enclosed bus duct are welded with aluminum coils,which can reduce grounding faults and prevent phase to phase short circuits.Due to the protection of the casing,enclosed bus ducts can eliminate external moisture,dust,and joints caused by external objects.

　　Enclosed busbar trunking can be divided into empty plug-in busbar trunking,dense insulation plug-in insulation plug-in busbar trunking,and high-strength plug-in busbar trunking according to insulation methods.Based on their structure and purpose,we can divide them into sealing,air sealing,sealing,sealing,air conductivity,and conductive.Enclosed busbar trunking is a busbar system composed of metal plates(steel plates or aluminum plates)as protective shells,conductive bars,insulation materials,and related accessories.It can be made into plug-in enclosed busbar trunking with large spacing,feeding enclosed busbar trunking without junction boxes in the middle,and so on.

　　In the power supply system of buildings,power lines and lighting lines are often set separately,and enclosed bus ducts serve as the main power supply,installed vertically along the wall once or multiple times in the electrical shaft.The purpose of a busbar trunking generally includes a starting busbar trunking,a straight through busbar trunking(with and without sockets),an L-shaped vertical(horizontal)bent busbar,a Z-shaped vertical(horizontal)offset busbar,a T-shaped three-way busbar,an X-shaped four-way busbar,a variable capacity busbar trunking,an expansion busbar trunking,a terminal sealing head,a terminal junction box,a plug-in box,accessories,connecting devices,etc.According to the insulation method,it can be divided into air insertion busbar trunking,dense insulation plug-in busbar trunking,and high-strength plug-in busbar trunking.

　　Enclosed bus ducts are not only fire-resistant,but also resistant to water and corrosion,ensuring uninterrupted power supply.Therefore,they can be widely used in important projects that cannot be powered off,public facility projects involving life safety,high-rise buildings with difficult firefighting,and places with explosion hazards.The enclosed busbar trunking system has high protection level,strong safety,simple design and installation,basic maintenance free,can be used for a long time in environments where people can stay for a short time,is not limited by altitude,can be used for a long time in indoor and outdoor high pollution environments,and can be used in places with explosion or fire hazards.