The HR17B series fuse type isolation switch can be operated with load and is suitable for rated currents of 40A-630A. It can be divided into 2 or 3 groups. It can be enclosed and hung on the busbar without punching, or fixed and installed on the busbar with punching, and provides an input and output structure at the upper and lower ends, with a knife edge introduction and arc extinguishing device; The switch cover is equipped with a closed detection hole, with built-in signal switch and detection switch. It can be equipped with a fuse monitor or used as a knife switch. The product complies with IEC60947-3 and GB/T14048.3 standards.