1、The switch is composed of a base, a cover and an arc extinguishing chamber, and is made of an arc-proof plastic, and has a fully plastic structure. 2、The static contact is directly mounted on the base, and the arc extinguishing chamber is convenient to disassemble and disassemble. Each arc extinguishing chamber has two parts, an inner chamber and an outer chamber, and a plurality of metal arc chutes are used to enhance the arc extinguishing capability and improve the contact life. 3、The NT fuse element is mounted inside the cover, and the cover can be fanned along the support member, and has a large electrical isolation distance to meet the requirements of the isolation switch. 4、The cover can be easily removed from the base, making it easy to install and replace the fuse. 5、There are two sets of mounting holes on the base to meet the requirements of installation in various switch cabinets and on the panel. The two sides of the switch can be equipped with auxiliary contacts as needed, and a signal indicating the switching state of the switch is issued. Item Type:Disconnect Isolating Switch Model: HR6-250/310 Conventional Heating Current (A): 250 Rated Operating Current (A): 380V: 250A / 660V: 200A Rated Limit Short-Circuit Current KA: 380V: 100KA / 660V: 50KA Maximum Expected Peak Current KA: 100 Pollution Degree: 3 Installation Category: III 1 x Switch