HR17B usoro fuse-ụdịdisconnectorna ibu ọrụ, adabara ugbu a 40A ~ 1600A, e nwere 1 otu, 2 otu, 3 otu, 4 otu nke isi. Enwere ike itinye ya na bọsbar , nwekwara ike itinye ya na efere edozi; ọ na-enye ntinye nke elu na nke dị ala na nhazi mmepụta, na ntinye mma na ngwaọrụ njikwa arc; na mkpuchi theswitch nwere oghere nchọpụta mechiri emechi, mgba ọkụ mgbanaka arụnyere n'ime ya, ngbanwe nchọpụta. ọ nwere ike ịbụ ihe nlele fuse nhọrọ, enwere ike iji ya dị ka ngbanwe mma. Mgbanwe ahụ nwere ọdịdị mara mma, akwụkwọ akụkọ na nkenke, ọ na-ezute ụkpụrụ IEC60947-3, GB14048.3.