{"id":1775,"date":"2026-08-17T15:18:41","date_gmt":"2026-08-17T07:18:41","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&p=1775"},"modified":"2026-08-17T15:18:42","modified_gmt":"2026-08-17T07:18:42","slug":"custom-380v-660v-low-voltage-switchgear","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/ru\/product\/custom-380v-660v-low-voltage-switchgear","title":{"rendered":"Custom 380V 660V Low-Voltage Switchgear"},"content":{"rendered":"

Custom 380V 660V Low-Voltage Switchgear<\/strong> is a modular low-voltage power distribution and control system designed for AC power distribution, motor control, power conversion and electrical equipment protection.<\/p>\n

The switchgear is available for 380V and 660V low-voltage systems<\/strong> and can be customized according to project requirements, including rated current, busbar configuration, feeder arrangement, protection devices, enclosure protection, internal separation and control functions.<\/p>\n

The MNS-type configuration is particularly suitable for applications requiring flexible feeder combinations, compact installation and convenient maintenance. Typical systems use modular compartments and withdrawable or fixed functional units. Similar 380\/660V MNS systems commonly support 50\/60Hz operation and high-current busbar configurations.<\/p>\n

The equipment can be engineered according to IEC 61439-1 and IEC 61439-2<\/strong>, with other standards available according to the destination market and project specification. IEC 61439-1 defines general construction, service-condition, technical and verification requirements, while IEC 61439-2 provides specific requirements for power switchgear and controlgear assemblies.<\/p>\n

\n

Key Features<\/h2>\n

1. Customized Electrical Configuration<\/h3>\n

The switchgear can be configured according to the project’s electrical design, including:<\/p>\n

    \n
  • Incoming feeder<\/li>\n
  • Bus coupler<\/li>\n
  • Outgoing feeders<\/li>\n
  • Motor control feeders<\/li>\n
  • Capacitor compensation<\/li>\n
  • Generator connection<\/li>\n
  • Transformer connection<\/li>\n
  • ATS \/ emergency power supply<\/li>\n
  • Metering and monitoring<\/li>\n
  • Protection and control circuits<\/li>\n<\/ul>\n

    2. Modular Construction<\/h3>\n

    The modular internal structure allows different functional units to be combined according to project requirements.<\/p>\n

    Typical options include:<\/p>\n

      \n
    • Fixed type<\/li>\n
    • Withdrawable type<\/li>\n
    • Drawer-type units<\/li>\n
    • Modular feeder compartments<\/li>\n
    • Separate cable compartments<\/li>\n
    • Independent control compartments<\/li>\n<\/ul>\n

      3. High Current Capacity<\/h3>\n

      Depending on the configuration, the main busbar and vertical busbar can be engineered for high-current applications.<\/p>\n

      Typical MNS systems available in the market cover busbar ratings from hundreds of amperes to several thousand amperes, with some configurations reaching 6300A or higher<\/strong>.<\/p>\n

      4. Safe Operation<\/h3>\n

      The enclosure and internal separation can be customized to improve:<\/p>\n

        \n
      • Operator safety<\/li>\n
      • Equipment protection<\/li>\n
      • Maintenance safety<\/li>\n
      • Isolation between functional units<\/li>\n
      • Short-circuit protection<\/li>\n
      • Cable access safety<\/li>\n<\/ul>\n

        Internal separation can be designed according to the required Form 2, Form 3 or Form 4<\/strong> configuration.<\/p>\n

        5. Easy Maintenance<\/h3>\n

        Withdrawable units allow maintenance personnel to isolate and remove individual functional units without shutting down the entire switchboard, where the system configuration permits.<\/p>\n

        This is particularly useful for:<\/p>\n

          \n
        • Manufacturing plants<\/li>\n
        • Mining projects<\/li>\n
        • Data centers<\/li>\n
        • Utility facilities<\/li>\n
        • Large commercial buildings<\/li>\n<\/ul>\n
          \n

          Technical Specifications<\/h1>\n
          \n
          \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
          Product Type<\/td>\nLow-Voltage Switchgear<\/td>\n<\/tr>\n
          Rated Voltage<\/td>\n380V \/ 660V AC<\/td>\n<\/tr>\n
          Rated Insulation Voltage<\/td>\nUp to 1000V, depending on design<\/td>\n<\/tr>\n
          Frequency<\/td>\n50Hz \/ 60Hz<\/td>\n<\/tr>\n
          Phase<\/td>\n3 Phase<\/td>\n<\/tr>\n
          System<\/td>\n3P3W \/ 3P4W \/ 3P5W<\/td>\n<\/tr>\n
          Rated Current<\/td>\nCustomized<\/td>\n<\/tr>\n
          Main Busbar Current<\/td>\nCustomized, typically up to several thousand amperes<\/td>\n<\/tr>\n
          Vertical Busbar<\/td>\nCustomized<\/td>\n<\/tr>\n
          Short-Time Withstand Current<\/td>\nCustomized according to project requirements<\/td>\n<\/tr>\n
          Peak Withstand Current<\/td>\nCustomized<\/td>\n<\/tr>\n
          Protection Degree<\/td>\nIP30 \/ IP40 \/ IP42 \/ IP54, optional<\/td>\n<\/tr>\n
          Internal Separation<\/td>\nForm 2 \/ Form 3 \/ Form 4<\/td>\n<\/tr>\n
          Installation<\/td>\nIndoor \/ Outdoor<\/td>\n<\/tr>\n
          Structure<\/td>\nFixed \/ Withdrawable<\/td>\n<\/tr>\n
          Cooling<\/td>\nNatural Ventilation \/ Forced Cooling if required<\/td>\n<\/tr>\n
          Incoming<\/td>\nACB \/ MCCB \/ Switch Disconnector<\/td>\n<\/tr>\n
          Outgoing<\/td>\nMCCB \/ MCB \/ Fuse \/ Motor Feeder<\/td>\n<\/tr>\n
          Control<\/td>\nManual \/ Automatic \/ PLC<\/td>\n<\/tr>\n
          Metering<\/td>\nAmmeter \/ Voltmeter \/ Power Meter \/ Multifunction Meter<\/td>\n<\/tr>\n
          Protection<\/td>\nOvercurrent \/ Short Circuit \/ Earth Fault \/ Other<\/td>\n<\/tr>\n
          Enclosure Material<\/td>\nPainted Steel<\/td>\n<\/tr>\n
          Busbar Material<\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n
          Main Standard<\/td>\nIEC 61439-1 \/ IEC 61439-2<\/td>\n<\/tr>\n
          Customization<\/td>\nAvailable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          Note:<\/strong> Final ratings should not be selected only from the nominal 380V\/660V system voltage. The required rated current, short-circuit withstand capability, temperature-rise performance, IP rating and internal separation need to be verified for the complete assembly according to the applicable IEC 61439 requirements.<\/p>\n

          \n

          Main Components<\/h1>\n

          Incoming Unit<\/h2>\n

          The incoming section can be equipped with:<\/p>\n

            \n
          • Air Circuit Breaker (ACB)<\/li>\n
          • Molded Case Circuit Breaker (MCCB)<\/li>\n
          • Switch disconnector<\/li>\n
          • Protection relay<\/li>\n
          • Multifunction power meter<\/li>\n
          • CTs and VTs where required<\/li>\n
          • Surge protection device<\/li>\n
          • Undervoltage \/ overvoltage protection<\/li>\n<\/ul>\n

            Busbar System<\/h2>\n

            The busbar system distributes electrical power between incoming and outgoing circuits.<\/p>\n

            Available options include:<\/p>\n

              \n
            • Main horizontal busbar<\/li>\n
            • Vertical distribution busbar<\/li>\n
            • Copper busbar<\/li>\n
            • Aluminum busbar<\/li>\n
            • Neutral busbar<\/li>\n
            • Protective earth bar<\/li>\n<\/ul>\n

              Busbar sizing is determined according to rated current, short-circuit withstand requirements, temperature rise, installation conditions and project specifications.<\/p>\n

              Outgoing Feeder<\/h2>\n

              Outgoing circuits can be customized for:<\/p>\n

                \n
              • Industrial machinery<\/li>\n
              • Motors<\/li>\n
              • Pumps<\/li>\n
              • Fans<\/li>\n
              • Compressors<\/li>\n
              • Lighting<\/li>\n
              • HVAC<\/li>\n
              • Solar systems<\/li>\n
              • Battery energy storage<\/li>\n
              • Building loads<\/li>\n
              • Other distribution equipment<\/li>\n<\/ul>\n
                \n

                Switchgear Types<\/h1>\n

                MNS Low-Voltage Switchgear<\/h3>\n

                A modular low-voltage switchgear solution designed for power distribution and motor control.<\/p>\n

                Typical characteristics include:<\/p>\n

                  \n
                • Modular construction<\/li>\n
                • Withdrawable functional units<\/li>\n
                • Flexible feeder arrangement<\/li>\n
                • High current capacity<\/li>\n
                • Easy maintenance<\/li>\n
                • Multiple protection configurations<\/li>\n<\/ul>\n

                  Fixed-Type Low-Voltage Switchgear<\/h3>\n

                  Suitable for applications where simple structure and economical installation are preferred.<\/p>\n

                  Withdrawable Low-Voltage Switchgear<\/h3>\n

                  Suitable for critical industrial applications where maintenance flexibility and operational continuity are important.<\/p>\n

                  Motor Control Center \u2014 MCC<\/h3>\n

                  Designed for centralized control and protection of motors.<\/p>\n

                  Typical applications include:<\/p>\n

                    \n
                  • Pumps<\/li>\n
                  • Fans<\/li>\n
                  • Compressors<\/li>\n
                  • Conveyors<\/li>\n
                  • Production lines<\/li>\n
                  • Water treatment systems<\/li>\n<\/ul>\n
                    \n

                    Customization Options<\/h1>\n
                    \n
                    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                    Configuration<\/th>\nAvailable Options<\/th>\n<\/tr>\n<\/thead>\n
                    Rated Voltage<\/td>\n380V \/ 400V \/ 415V \/ 440V \/ 480V \/ 525V \/ 660V<\/td>\n<\/tr>\n
                    Frequency<\/td>\n50Hz \/ 60Hz<\/td>\n<\/tr>\n
                    Rated Current<\/td>\nProject-specific<\/td>\n<\/tr>\n
                    Main Breaker<\/td>\nACB \/ MCCB<\/td>\n<\/tr>\n
                    Feeder Breaker<\/td>\nMCCB \/ MCB \/ Fuse<\/td>\n<\/tr>\n
                    Structure<\/td>\nFixed \/ Withdrawable<\/td>\n<\/tr>\n
                    Busbar<\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n
                    Neutral<\/td>\n3P3W \/ 3P4W \/ 3P5W<\/td>\n<\/tr>\n
                    IP Rating<\/td>\nIP30\u2013IP54<\/td>\n<\/tr>\n
                    Internal Separation<\/td>\nForm 2 \/ Form 3 \/ Form 4<\/td>\n<\/tr>\n
                    Metering<\/td>\nStandard \/ Multifunction<\/td>\n<\/tr>\n
                    Protection<\/td>\nStandard \/ Advanced<\/td>\n<\/tr>\n
                    Control<\/td>\nManual \/ Automatic \/ PLC<\/td>\n<\/tr>\n
                    Communication<\/td>\nRS485 \/ Modbus \/ Other<\/td>\n<\/tr>\n
                    Enclosure<\/td>\nIndoor \/ Outdoor<\/td>\n<\/tr>\n
                    Cable Entry<\/td>\nTop \/ Bottom<\/td>\n<\/tr>\n
                    Color<\/td>\nCustomized<\/td>\n<\/tr>\n
                    Installation<\/td>\nFloor-mounted<\/td>\n<\/tr>\n
                    Special Environment<\/td>\nDust \/ Humidity \/ High Temperature \/ Corrosive Environment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                    \n

                    Protection & Control<\/h1>\n

                    Depending on the project, the switchgear can integrate:<\/p>\n

                      \n
                    • Overcurrent protection<\/li>\n
                    • Short-circuit protection<\/li>\n
                    • Earth-fault protection<\/li>\n
                    • Overload protection<\/li>\n
                    • Under-voltage protection<\/li>\n
                    • Over-voltage protection<\/li>\n
                    • Phase-loss protection<\/li>\n
                    • Motor protection<\/li>\n
                    • Surge protection<\/li>\n
                    • Power factor monitoring<\/li>\n
                    • Energy metering<\/li>\n
                    • Temperature monitoring<\/li>\n
                    • Remote monitoring<\/li>\n<\/ul>\n

                      For smart power distribution projects, communication interfaces can also be integrated for connection with PLC, SCADA, BMS or energy management systems<\/strong>.<\/p>\n

                      \n

                      Applications<\/h1>\n

                      The 380V\/660V low-voltage switchgear<\/strong> can be used in a wide range of power distribution and industrial applications.<\/p>\n

                      Industrial Plants<\/h3>\n
                        \n
                      • Manufacturing plants<\/li>\n
                      • Steel plants<\/li>\n
                      • Cement plants<\/li>\n
                      • Chemical plants<\/li>\n
                      • Food processing factories<\/li>\n
                      • Textile factories<\/li>\n<\/ul>\n

                        Mining & Heavy Industry<\/h3>\n
                          \n
                        • Mining facilities<\/li>\n
                        • Crushing systems<\/li>\n
                        • Conveyors<\/li>\n
                        • Pump stations<\/li>\n
                        • Processing plants<\/li>\n<\/ul>\n

                          Infrastructure<\/h3>\n
                            \n
                          • Water treatment plants<\/li>\n
                          • Sewage treatment facilities<\/li>\n
                          • Transportation infrastructure<\/li>\n
                          • Public facilities<\/li>\n<\/ul>\n

                            Commercial Buildings<\/h3>\n
                              \n
                            • Office buildings<\/li>\n
                            • Shopping centers<\/li>\n
                            • Hotels<\/li>\n
                            • Hospitals<\/li>\n
                            • Large commercial complexes<\/li>\n<\/ul>\n

                              Energy Projects<\/h3>\n
                                \n
                              • Solar PV plants<\/li>\n
                              • Wind power projects<\/li>\n
                              • BESS facilities<\/li>\n
                              • Power generation plants<\/li>\n
                              • Substations<\/li>\n<\/ul>\n

                                Data Centers<\/h3>\n
                                  \n
                                • Main power distribution<\/li>\n
                                • Critical load distribution<\/li>\n
                                • UPS output distribution<\/li>\n
                                • Generator distribution<\/li>\n
                                • Mechanical systems<\/li>\n<\/ul>\n
                                  \n

                                  Manufacturing & Quality Control<\/h1>\n

                                  Each customized switchgear assembly should be manufactured according to the approved technical drawings and project specifications.<\/p>\n

                                  The typical production process includes:<\/p>\n

                                  Technical Specification Review<\/strong><\/p>\n

                                  \u2192 Electrical Design<\/strong><\/p>\n

                                  \u2192 Layout & SLD Confirmation<\/strong><\/p>\n

                                  \u2192 Component Selection<\/strong><\/p>\n

                                  \u2192 Enclosure Fabrication<\/strong><\/p>\n

                                  \u2192 Busbar Processing<\/strong><\/p>\n

                                  \u2192 Electrical Assembly<\/strong><\/p>\n

                                  \u2192 Wiring & Inspection<\/strong><\/p>\n

                                  \u2192 Routine Verification<\/strong><\/p>\n

                                  \u2192 Final Inspection<\/strong><\/p>\n

                                  \u2192 Packing & Shipment<\/strong><\/p>\n

                                  For IEC 61439 assemblies, verification covers relevant construction and performance characteristics, while routine verification is carried out on each completed assembly.<\/p>\n

                                  \n

                                  Factory Testing<\/h1>\n

                                  Typical factory inspection and testing can include:<\/p>\n

                                  Visual & Mechanical Inspection<\/h3>\n
                                    \n
                                  • Enclosure inspection<\/li>\n
                                  • Component installation<\/li>\n
                                  • Busbar installation<\/li>\n
                                  • Cable routing<\/li>\n
                                  • Mechanical operation<\/li>\n
                                  • Interlock inspection<\/li>\n
                                  • Nameplate verification<\/li>\n<\/ul>\n

                                    Electrical Testing<\/h3>\n
                                      \n
                                    • Insulation resistance<\/li>\n
                                    • Dielectric withstand<\/li>\n
                                    • Protective circuit continuity<\/li>\n
                                    • Functional operation<\/li>\n
                                    • Metering verification<\/li>\n
                                    • Control circuit inspection<\/li>\n
                                    • Breaker operation<\/li>\n<\/ul>\n

                                      Assembly Verification<\/h3>\n

                                      Where applicable, verification is carried out according to the relevant requirements of IEC 61439-1 \/ IEC 61439-2<\/strong>.<\/p>\n

                                      \n

                                      Installation Environment<\/h1>\n

                                      The switchgear can be engineered for different operating environments.<\/p>\n

                                      Typical considerations include:<\/p>\n

                                        \n
                                      • Ambient temperature<\/li>\n
                                      • Relative humidity<\/li>\n
                                      • Installation altitude<\/li>\n
                                      • Indoor or outdoor installation<\/li>\n
                                      • Dust concentration<\/li>\n
                                      • Corrosive atmosphere<\/li>\n
                                      • Seismic requirements<\/li>\n
                                      • Ventilation conditions<\/li>\n
                                      • Cable entry arrangement<\/li>\n<\/ul>\n

                                        For harsh environments, additional protection such as higher IP rating, improved surface treatment, special ventilation or anti-corrosion measures can be specified.<\/p>\n

                                        \n

                                        Why Choose Customized 380V\/660V Switchgear?<\/h1>\n

                                        Project-Specific Design<\/strong>
                                        Designed around your actual SLD, load list and installation requirements.<\/p>\n

                                        Flexible Configuration<\/strong>
                                        Incoming, outgoing, motor control and auxiliary circuits can be arranged according to the project.<\/p>\n

                                        International Standards<\/strong>
                                        Designed according to applicable IEC 61439 requirements for low-voltage assemblies.<\/p>\n

                                        Factory Direct Supply<\/strong>
                                        Engineering, manufacturing, testing and export packing can be handled by one manufacturer.<\/p>\n

                                        Suitable for EPC Projects<\/strong>
                                        Technical drawings, component lists, wiring diagrams, inspection documents and other project documentation can be provided according to contract requirements.<\/p>\n

                                        \n

                                        Documents Available for EPC Projects<\/h1>\n

                                        For overseas EPC projects, the following documents can be supplied according to project requirements:<\/p>\n

                                          \n
                                        • General Arrangement Drawing<\/li>\n
                                        • Single Line Diagram<\/li>\n
                                        • Electrical Schematic<\/li>\n
                                        • Wiring Diagram<\/li>\n
                                        • Bill of Materials<\/li>\n
                                        • Component Datasheets<\/li>\n
                                        • Technical Data Sheet<\/li>\n
                                        • Factory Test Report<\/li>\n
                                        • Routine Test Report<\/li>\n
                                        • Inspection Report<\/li>\n
                                        • Operation & Maintenance Manual<\/li>\n
                                        • Installation Manual<\/li>\n
                                        • Packing List<\/li>\n
                                        • Certificate of Conformity<\/li>\n
                                        • Certificate of Origin<\/li>\n<\/ul>\n
                                          \n

                                          Information Required for Quotation<\/h1>\n

                                          For an accurate quotation, customers are recommended to provide:<\/p>\n

                                            \n
                                          1. Rated voltage: 380V \/ 660V \/ other<\/strong><\/li>\n
                                          2. Frequency: 50Hz \/ 60Hz<\/strong><\/li>\n
                                          3. Rated current<\/li>\n
                                          4. Short-circuit current<\/li>\n
                                          5. Incoming quantity<\/li>\n
                                          6. Outgoing feeder quantity<\/li>\n
                                          7. Breaker type<\/li>\n
                                          8. Motor feeder requirements<\/li>\n
                                          9. Busbar specification<\/li>\n
                                          10. IP protection requirement<\/li>\n
                                          11. Internal separation requirement<\/li>\n
                                          12. Installation environment<\/li>\n
                                          13. Indoor or outdoor installation<\/li>\n
                                          14. Applicable standard<\/li>\n
                                          15. Project quantity<\/li>\n
                                          16. Destination country<\/li>\n
                                          17. Single Line Diagram (SLD)<\/strong><\/li>\n<\/ol>\n

                                            For customized switchgear, an SLD and load list are especially useful because they allow the manufacturer to determine feeder arrangement, breaker ratings, busbar capacity and cabinet configuration rather than quoting from voltage alone. IEC itself provides guidance on specifying assembly characteristics and application requirements<\/p>","protected":false},"excerpt":{"rendered":"

                                            Custom 380V 660V Low-Voltage Switchgear<\/strong> is a reliable power distribution and control solution for industrial, commercial, infrastructure, and energy projects. Designed for 380V and 660V AC systems<\/strong>, it offers flexible configurations, customized busbars, circuit breakers, protection devices, and IP ratings to meet different project requirements. Suitable for power distribution, motor control, manufacturing plants, mining, renewable energy, and EPC projects<\/strong>.<\/p>","protected":false},"featured_media":1776,"template":"","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false},"product_brand":[],"product_cat":[78],"product_tag":[],"class_list":["post-1775","product","type-product","status-publish","has-post-thumbnail","product_cat-switchgear-series","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product\/1775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media\/1776"}],"wp:attachment":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media?parent=1775"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_brand?post=1775"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_cat?post=1775"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_tag?post=1775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}