Overview
The HR6 series fuse type knife switch (hereinafter referred to as the switch) is mainly used in distribution circuits and motor circuits with high short-circuit currents up to 630A, rated AC 400V and 660V (45N-62Hz), as a power switch, isolation switch, emergency switch, and for circuit protection. However, it is generally not used for directly opening and closing a single motor
The switch complies with IEC60947-3 and GB14048.3 standards

Structural Features
The switch consists of a base, cover, and arc extinguishing chamber, all made of arc resistant plastic and featuring a fully plastic structure. The static contact is directly mounted on the base, and the arc extinguishing chamber is easy to disassemble and assemble. Each arc extinguishing chamber has two parts: an inner chamber and an outer chamber. Multiple metal arc extinguishing grids are used to enhance the arc extinguishing ability and improve the contact life
The NT type fuse link is installed inside the cover, and the cover can rotate in a fan-shaped manner along the support, with a large electrical isolation distance to meet the requirements of the isolation switch. The cover can be easily removed from the base, making installation and replacement of the fuse link very convenient. There are two sets of mounting holes on the base, which can meet the requirements for installation inside various switch cabinets and on panels. On both sides of the switch, auxiliary contacts can be installed as needed to send signals indicating the on/off status of the switch