Feature: 1. The switch consists of base, cover and arc extinguishing chamber, which are all made of arc resistant plastic. 2. The static contacts are directly mounted on the base. Each arc extinguishing chamber has two parts of the inner one and the outer one, which adopt multi-plate metal arc extinguisher to enhance the arc extinguisher ability and the contact life. 3. NT type fuse link is installed inside the cover. The cover can rotate in a fan shape along the support parts, with large electrical isolation distance to meet the requirements of the isolator switch. The cover can be easily removed from the base, making it easy to mount and replace the fuse link. 4. There are two groups of mounting holes on the base to meet the requirements of installation inside various switch cabinets or on the panel. 5. Auxiliary contacts can be installed on the two sides of the switch as needed to emit the signal indicating the state of the switch. Specification: Item Type: Disconnect Switch Model: HR6-400/310 Rated Insulation Voltage: 660V Conventional Heating Current: 400A Rated Operating Current: 380V: 400A, 660V: 315A Rated Limit Short Circuit Current: 380V: 100KA, 660V: 50KA Maximum Expected Peak Current: 100KA Pollution Level: 3 Installation Category: III Material: Copper, Brass (Optional). Package List: 1 x Disconnect Switch