{"id":723,"date":"2026-07-22T02:18:42","date_gmt":"2026-07-22T02:18:42","guid":{"rendered":"https:\/\/dfdl.cc\/product\/cable-branch-box-with-load-break-switch-and-fuse\/"},"modified":"2026-07-28T07:25:58","modified_gmt":"2026-07-28T07:25:58","slug":"cable-branch-box-with-load-break-switch-and-fuse","status":"publish","type":"product","link":"https:\/\/dfdl.cc\/vi\/san-pham\/cable-branch-box-with-load-break-switch-and-fuse\/","title":{"rendered":"Cable Branch Box with Load Break Switch and Fuse"},"content":{"rendered":"

Cable Branch Box with SF6 Load Break Switch<\/strong><\/h4>\n

Product Overview<\/strong><\/p>\n

The ring-network type cable branch box with SF6 load break switch is composed by connecting the SF6 load switch with related cable connector accessories. It can directly interrupt load current and improve power supply reliability. The enclosure is made of high-quality steel plate with scientific air inlet and outlet design, providing good heat insulation and ventilation. The SF6 load switch uses SF6 gas as arc-extinguishing and insulating medium, with contacts sealed in a reinforced epoxy-resin shell filled with SF6. Touchable shielded synthetic-rubber cable incoming and outgoing lines are connected through cable connectors to integrated bushing seats or special busbars. Inside the box, cross connectors and T-connectors can realize fully insulated and fully sealed connection with the SF6 load switch. The product is suitable for cable connection, branching, power transfer and distribution in cable networks, and offers maintenance-free operation, corrosion resistance, compact size, safety, reliability, compact structure, simple installation and flexible operation.<\/p>\n

Functions and Features<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
Feature 1<\/th>\nOne or more SF6 load switches can be installed on each line, replacing part of the ring main unit and reducing project cost.<\/td>\n<\/tr>\n
Feature 2<\/th>\nThe three-position SF6 load switch with rotary arc chamber can isolate partial outage faults and reduce the impact of outage.<\/td>\n<\/tr>\n
Feature 3<\/th>\nA five-prevention interlock is arranged between the switch and enclosure; incoming and outgoing cable headers are equipped with high-voltage live display devices for safe inspection and operation.<\/td>\n<\/tr>\n
Feature 4<\/th>\nFully insulated, fully sealed, compact, maintenance-free, dustproof, flood-resistant and corrosion-resistant, suitable for harsh environments.<\/td>\n<\/tr>\n
Feature 5<\/th>\nFull-shield cable connector requires no insulation distance and ensures personal safety.<\/td>\n<\/tr>\n
Feature 6<\/th>\nFlexible incoming and outgoing arrangements meet multiple outgoing line requirements.<\/td>\n<\/tr>\n
Feature 7<\/th>\nFront-door design with external mechanical lock.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Main Application<\/strong><\/p>\n

This product is mainly used at cable connection points in ring-network systems and general radial systems with rated frequency of 50Hz and voltage of 12kV for distributing electric power. It is widely used in distribution networks of urban industrial parks, residential communities, commercial centers, mining areas, steel, automotive, petroleum, chemical and cement enterprises. It is especially suitable for urban cable grid reconstruction, greatly saving equipment and cable investment while improving power supply reliability.<\/p>\n

Model Description<\/strong><\/p>\n\n\n\n\n\n\n\n
DF W<\/th>\nHigh-voltage cable branch box for outdoor installation<\/td>\n<\/tr>\n
12K<\/th>\nRated voltage and SF6 load switch structure<\/td>\n<\/tr>\n
630<\/th>\nRated current<\/td>\n<\/tr>\n
Incoming \/ Outgoing Circuits<\/th>\nNumber of incoming and outgoing circuits<\/td>\n<\/tr>\n
B<\/th>\nWith lightning arrester<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Main Technical Parameters<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Branch Box Technical Index<\/th>\nParameter<\/th>\nSF6 Load Switch Technical Index<\/th>\nParameter<\/th>\n<\/tr>\n<\/thead>\n
Rated Voltage<\/td>\n12kV<\/td>\nRated Breaking Current<\/td>\n630A<\/td>\n<\/tr>\n
Rated Current<\/td>\n630A<\/td>\nRated Open-Loop Current<\/td>\n45A<\/td>\n<\/tr>\n
Power-Frequency Withstand Voltage<\/td>\n42kV \/ 1min<\/td>\nRated Cable-Charging Breaking Current<\/td>\n16A<\/td>\n<\/tr>\n
Impulse Withstand Voltage<\/td>\n75kV<\/td>\nRated Thermal Stability Current<\/td>\n20kA \/ 3s<\/td>\n<\/tr>\n
DC Withstand Voltage<\/td>\n52V \/ 15kV<\/td>\nStable Thermal Stability Current<\/td>\n50kA<\/td>\n<\/tr>\n
Partial Discharge<\/td>\nNot more than 10pc \/ 15kV<\/td>\nRated Making Current<\/td>\n50kA<\/td>\n<\/tr>\n
Rated Thermal Stability Current<\/td>\n20kA \/ 3s<\/td>\nRated Charging Pressure at 20C<\/td>\n0.045MPa<\/td>\n<\/tr>\n
Rated Dynamic Stability Current<\/td>\n50kA \/ 0.3s<\/td>\nLoad Switch Mechanical Life<\/td>\n5000 operations<\/td>\n<\/tr>\n
Loop Resistance<\/td>\nNot more than 200 micro-ohm<\/td>\nEarthing Switch Mechanical Life<\/td>\n1000 operations<\/td>\n<\/tr>\n
Protection Grade<\/td>\nIP33<\/td>\n630A Operation Times<\/td>\nLess than 500 operations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

A cable branch box with SF6 load break switching for safer cable tapping, sectionalizing and power distribution.<\/p>","protected":false},"featured_media":722,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[29],"product_tag":[],"class_list":["post-723","product","type-product","status-publish","has-post-thumbnail","product_cat-cable-branch-box","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/product\/723","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/comments?post=723"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/media\/722"}],"wp:attachment":[{"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/media?parent=723"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/product_brand?post=723"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/product_cat?post=723"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/dfdl.cc\/vi\/wp-json\/wp\/v2\/product_tag?post=723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}