The BKWJ dry self-healing low-voltage parallel capacitor (hereinafter referred to as the capacitor) is assembled from multiple capacitor units as a whole, packaged in a cold rolled steel plate shell, and filled with inert and non-toxic particles inside; The capacitor unit is wound with high-quality metallized thin film as the dielectric, and these unit components adopt a unique built-in fuse protection structure; The components are packaged with thermosetting resin material, with good sealing effect