# Niuni Electric > One-stop solution for switchgear components Vacuum Circuit Breakers Meta-Clad Switchgear Components Gas Insulated Switchgear Components Ring Main Unit Switchgear Components Current and Voltage Transformers Capacitors Quick Quote METAL-CLAD SWITCHGEAR COMPONENTS --- ## Pages - [Service](https://niunielec.com/service/): Partner with Us to Deliver Flexible Switchgear Solutions Choosing the right partner for your flexible switchgear solutions is crucial. Our... - [Contact Us-2](https://niunielec.com/contact-us/contact-us-2/): Reach Out Today. We're Here to Help Niuni Electric Co. ,Ltd. If you have needs, please feel free to contact... - [FAQ](https://niunielec.com/faq/): You’ll need to provide the tech pack for your design. It can be in any format (even a simple spreadsheet),... - [Home Video](https://niunielec.com/home-video/): Build Your Own Website with Ease! Step-by-step tutorials for beginners — from setup to launch, we guide you all the... - [Products](https://niunielec.com/products/) - [Cart](https://niunielec.com/cart/) - [Checkout](https://niunielec.com/checkout/) - [My account](https://niunielec.com/my-account/) - [News](https://niunielec.com/new/) - [Home](https://niunielec.com/): One-stop solution for switchgear components Vacuum Circuit Breakers Meta-Clad Switchgear Components Gas Insulated Switchgear Components Ring Main Unit Switchgear Components... - [Contact Us](https://niunielec.com/contact-us/): Wenzhou Niuni Electric Co. ,Ltd. If you have needs, please feel free to contact us and we will invite you... - [About Us](https://niunielec.com/about/): Who We Are Niuni Electric Co. ,Ltd. Niuni Electric is a premier provider of cost-effective and reliable components for the... - [Successfully sent the message](https://niunielec.com/successfully-sent-the-message/): Thank you for Your Submission! We have successfully received your form. Your information is very important to us. Our team... --- ## Posts - [Key Guide to Selecting Core Components for Medium-Voltage Switchgear](https://niunielec.com/news/key-guide-to-selecting-core-components-for-medium-voltage-switchgear/): In modern power systems, medium-voltage switchgear is a critical component that ensures reliable and safe power delivery. The performance of... - [The Vital Role of Vacuum Circuit Breakers in Medium-Voltage Systems](https://niunielec.com/news/the-vital-role-of-vacuum-circuit-breakers-in-medium-voltage-systems/): In medium-voltage distribution systems, vacuum circuit breakers (VCBs) are one of the most crucial protective devices. They quickly interrupt fault... - [Modern Solutions for Ring Main Unit Switchgear](https://niunielec.com/news/modern-solutions-for-ring-main-unit-switchgear/): Ring Main Unit (RMU) switchgear is widely used in urban distribution networks and industrial parks, playing a key role in... - [Advantages of Meta-Clad Switchgear Components](https://niunielec.com/news/advantages-of-meta-clad-switchgear-components/): Metal-clad (Meta-Clad) switchgear is widely adopted in medium-voltage distribution systems for its compact design and high reliability. High-quality metal-clad components... - [Reliable Gas-Insulated Switchgear (GIS) Solutions](https://niunielec.com/news/reliable-gas-insulated-switchgear-gis-solutions/): Gas-insulated switchgear (GIS) is valued for its compact size, excellent insulation properties, and low maintenance requirements, making it an essential... - [Vacuum Circuit Breaker Why Niuni Electric Is Your Trusted Medium-Voltage Partner](https://niunielec.com/news/why-niuni-electric-is-your-trusted-medium-voltage-partner/): In the global medium-voltage industry, selecting a reliable component supplier is crucial for switchgear manufacturers. Niuni Electric is dedicated to... --- ## Products - [ZN63(VS1)-40.5 indoor AC high-voltage vacuum circuit breaker](https://niunielec.com/product/zn63vs1-40-5-indoor-ac-high-voltage-vacuum-circuit-breaker/): This vacuum circuit breaker is designed for 40. 5kV, 50Hz indoor switchgear. As a key protection and control component, it... - [12Kv 24Kv Indoor Side Mounted Vacuum Circuit Breaker High Voltage VCB](https://niunielec.com/product/12kv-24kv-indoor-side-mounted-vacuum-circuit-breaker-high-voltage-vcb/): Indoor high voltage side mounted vacuum circuit breaker (circuit breaker) is suitable for indoor switchgear of 12kV/24kV power system. As... - [33KV 35KV 36KV 630A Indoor SF6 Gas Insulated Load Break Switch LBS](https://niunielec.com/product/33kv-35kv-36kv-630a-indoor-sf6-gas-insulated-load-break-switch-lbs/): FLN36-36 36KV indoor high-voltage SF6 load switch, an switchgear with the rated voltage of 36kV/40. 5kV, adopted with SF6 gas... - [10KV 12KV Vacuum Circuit Breaker 3 Pole Fixed Type VCB for Medium Voltage Switchgear Electrical Panel #2](https://niunielec.com/product/lateral-type-vacuum-circuit-breaker-2/): (ZN63)VS1-12 indoor high voltoge handcart vacuum circuit breaker is applied to 7. 2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions... - [FLN36 Indoor 12kv 24kv LBS Medium Voltage SF6 gas insulated Load Break Switch](https://niunielec.com/product/fln36-indoor-12kv-24kv-lbs-medium-voltage-sf6-gas-insulated-load-break-switch/): The load breaker switch is a door-type medium voltage switchgear offering three operational states: closed, open, and grounded. Featuring a... - [10KV 12KV Vacuum Circuit Breaker 3 Pole Fixed Type VCB for Medium Voltage Switchgear Electrical Panel](https://niunielec.com/product/lateral-type-vacuum-circuit-breaker/): (ZN63)VS1-12 indoor high voltoge handcart vacuum circuit breaker is applied to 7. 2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions... --- # # Detailed Content ## Pages - Published: 2025-09-19 - Modified: 2025-09-29 - URL: https://niunielec.com/service/ Home Partner with Us to Deliver Flexible Switchgear Solutions Choosing the right partner for your flexible switchgear solutions is crucial. Our extensive experience, specialized expertise, and commitment to quality set us apart. Verifiable Performance Rapid Response Tailored Solutions Proven Reliability Optimized Value Customized Process We provide tailored solutions. Our engineering team adapts products to your specific needs. Requirements & Design Proposal 01 Sample Development & Approval 02 Pricing & Contract Finalization 03 Production & Quality Control 04 Delivery & After-Sales Support 05 Take a Look St Our Package Container Non-fumigation Wooden Case Non-fumigation Wooden Pallet --- - Published: 2025-08-24 - Modified: 2025-09-19 - URL: https://niunielec.com/contact-us/contact-us-2/ Reach Out Today. We're Here to Help Home Niuni Electric Co. ,Ltd. If you have needs, please feel free to contact us and we will invite you to visit our production factory! TEL/Phone: +86 178 1569 1269 Email: Hi@google. com Address: Room 1504, Building 1, Central Garden, No. 3366, Central Avenue, Liushi, Yueqing, Wenzhou, Zhejiang, China (For office use only) Contact FormContact Us Today, We Will Get Back To You ImmediatelyNameEmailPhone/WhatsappCountryCompany NameHow would you like us to contact you? Email WhatsApp WeChatYour MessageSend window. fluent_form_ff_form_instance_1_2 = {"id":"1","settings":{"layout":{"labelPlacement":"top","helpMessagePlacement":"with_label","errorMessagePlacement":"inline","cssClassName":"","asteriskPlacement":"asterisk-right"},"restrictions":{"denyEmptySubmission":{"enabled":false}}},"form_instance":"ff_form_instance_1_2","form_id_selector":"fluentform_1","rules":{"names":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"}},"names":{"required":{"value":false,"message":"This field is required","global":false,"global_message":"This field is required"}},"names":{"required":{"value":false,"message":"This field is required","global":false,"global_message":"This field is required"}},"email":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"},"email":{"value":true,"message":"This field must contain a valid email","global":false,"global_message":"This field must contain a valid email"}},"phone":{"required":{"value":true,"global":true,"message":"This field is required","global_message":"This field is required"},"valid_phone_number":{"value":false,"global":true,"message":"Phone number is not valid","global_message":"Phone number is not valid"}},"input_text":{"required":{"value":false,"message":"This field is required","global_message":"This field is required","global":true}},"input_text_1":{"required":{"value":false,"message":"This field is required","global_message":"This field is required","global":true}},"checkbox":{"required":{"value":true,"message":"This field is required","global_message":"This field is required","global":true}},"message":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"}}},"debounce_time":300}; --- - Published: 2025-07-30 - Modified: 2025-07-30 - URL: https://niunielec.com/faq/ Accordion Item 1 Title You’ll need to provide the tech pack for your design. It can be in any format (even a simple spreadsheet), as long as it includes essential information like design, sizing, fabric, and print techniques. If you don’t have a tech pack, please click here to see our Tech Pack Guidance Service. Accordion Item 2 Title You’ll need to provide the tech pack for your design. It can be in any format (even a simple spreadsheet), as long as it includes essential information like design, sizing, fabric, and print techniques. If you don’t have a tech pack, please click here to see our Tech Pack Guidance Service. Accordion Item 3 Title You’ll need to provide the tech pack for your design. It can be in any format (even a simple spreadsheet), as long as it includes essential information like design, sizing, fabric, and print techniques. If you don’t have a tech pack, please click here to see our Tech Pack Guidance Service. --- - Published: 2025-07-08 - Modified: 2025-07-08 - URL: https://niunielec.com/home-video/ Build Your Own Website with Ease! Step-by-step tutorials for beginners — from setup to launch, we guide you all the way. Start Learning Now --- - Published: 2025-06-07 - Modified: 2025-11-07 - URL: https://niunielec.com/new/ News Home Search for: CategoriesNews Vacuum Circuit Breaker VCB Accessories Metal Clad Switchgear Components Ring Main Unit Component Gas-Insulated Switchgear Components Transformer Power Capacitor MV Switchgear How Can We Help You You can contact us any way that is convenient for you. We are available 24/7 via email or telephone. Quick Quote Vacuum Circuit Breaker Why Niuni Electric Is Your Trusted Medium-Voltage Partner In the global medium-voltage industry, selecting a reliable component supplier is crucial for switchgear manufacturers... . 18 Sep Reliable Gas-Insulated Switchgear (GIS) Solutions Gas-insulated switchgear (GIS) is valued for its compact size, excellent insulation properties, and low maintenance... 18 Sep Advantages of Meta-Clad Switchgear Components Metal-clad (Meta-Clad) switchgear is widely adopted in medium-voltage distribution systems for its compact design and... 18 Sep Modern Solutions for Ring Main Unit Switchgear Ring Main Unit (RMU) switchgear is widely used in urban distribution networks and industrial parks,... 18 Sep The Vital Role of Vacuum Circuit Breakers in Medium-Voltage Systems In medium-voltage distribution systems, vacuum circuit breakers (VCBs) are one of the most crucial protective... 18 Sep Key Guide to Selecting Core Components for Medium-Voltage Switchgear In modern power systems, medium-voltage switchgear is a critical component that ensures reliable and safe... 18 Sep --- - Published: 2025-05-31 - Modified: 2025-10-11 - URL: https://niunielec.com/ One-stop solution for switchgear components Vacuum Circuit Breakers Meta-Clad Switchgear Components Gas Insulated Switchgear Components Ring Main Unit Switchgear Components Current and Voltage Transformers Capacitors Quick Quote METAL-CLAD SWITCHGEAR COMPONENTS From arc-resistant assemblies and reliable interlocks to precise meters and durable cabinets, we provide everything you need in one place. Full Range: One-step service for all metal-clad switchgear parts. Enhanced Safety: Components engineered for superior protection and arc containment. Proven Reliability: Built to last, ensuring uninterrupted operation. Cost-Effective: Streamline your supply chain and reducetotal cost of ownership. Quick Quote VACUUM CIRCUIT BREAKERS & PARTS We provide a complete line of vacuum interrupters, durable operating mechanisms, and key components, alongside fully assembled breakers. Features & Advantages: High Performance: Excellent dielectric strength and reliable arc quenching. Long Life: Minimal wear and tear due to vacuum technology. Flexibility: Available as complete units or components for OEMs. Low Maintenance: Reduced downtime and operating costs. Quick Quote The Future is Green: SF6-Free Gas-Insulated Switchgear Our innovative Gas-Insulated Switchgear solutions utilize environmentally responsible insulating gases, completely eliminating the use of SF6. Eco-Conscious: Zero SF6, significantly lower Global Warming Potential (GWP). Compact Design: Space-saving footprint for versatile installations. Maintenance-Free: Sealed for life design ensures minimal upkeep. Future-Proof: Compliant with evolving environmental regulations. Quick Quote One-stop solution for switchgear components Vacuum Circuit Breakers Meta-Clad Switchgear Components Gas Insulated Switchgear Components Ring Main Unit Switchgear Components Current and Voltage Transformers Capacitors Quick Quote Metal-Clad Switchgear Components From arc-resistant assemblies and reliable interlocks to precise meters and durable cabinets, we... --- - Published: 2025-05-31 - Modified: 2025-11-07 - URL: https://niunielec.com/contact-us/ Home Wenzhou Niuni Electric Co. ,Ltd. If you have needs, please feel free to contact us and we will invite you to visit our production factory! Phone Number +86 178 1569 1269 Email info@niunielec. com Address Room 1504, Building 1, Central Garden, No. 3366, Central Avenue, Yueqing, Zhejiang, China (For office use only) Follow Us on Social Media Contact FormContact Us Today, We Will Get Back To You ImmediatelyNameEmailPhone/WhatsappCountryCompany NameHow would you like us to contact you? Email WhatsApp WeChatYour MessageSend window. fluent_form_ff_form_instance_1_1 = {"id":"1","settings":{"layout":{"labelPlacement":"top","helpMessagePlacement":"with_label","errorMessagePlacement":"inline","cssClassName":"","asteriskPlacement":"asterisk-right"},"restrictions":{"denyEmptySubmission":{"enabled":false}}},"form_instance":"ff_form_instance_1_1","form_id_selector":"fluentform_1","rules":{"names":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"}},"names":{"required":{"value":false,"message":"This field is required","global":false,"global_message":"This field is required"}},"names":{"required":{"value":false,"message":"This field is required","global":false,"global_message":"This field is required"}},"email":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"},"email":{"value":true,"message":"This field must contain a valid email","global":false,"global_message":"This field must contain a valid email"}},"phone":{"required":{"value":true,"global":true,"message":"This field is required","global_message":"This field is required"},"valid_phone_number":{"value":false,"global":true,"message":"Phone number is not valid","global_message":"Phone number is not valid"}},"input_text":{"required":{"value":false,"message":"This field is required","global_message":"This field is required","global":true}},"input_text_1":{"required":{"value":false,"message":"This field is required","global_message":"This field is required","global":true}},"checkbox":{"required":{"value":true,"message":"This field is required","global_message":"This field is required","global":true}},"message":{"required":{"value":true,"message":"This field is required","global":false,"global_message":"This field is required"}}},"debounce_time":300}; function initFFInstance_1 { if (! window. fluentFormApp) { console. log('No fluentFormApp found'); return; } var ajax_formInstance = window. fluentFormApp(jQuery('form. ff_form_instance_1_1')); if (ajax_formInstance) { ajax_formInstance. initFormHandlers; } } initFFInstance_1; --- - Published: 2025-05-31 - Modified: 2025-09-29 - URL: https://niunielec.com/about/ Home Who We Are Niuni Electric Co. ,Ltd. Niuni Electric is a premier provider of cost-effective and reliable components for the global medium-voltage power industry. Our seasoned team, with over a decade of expertise, specializes in high-quality products for 7. 2kV to 40. 5kV switchgear, including vacuum circuit breakers, current and voltage transformers, capacitors, meta-clad switchgear components, gas insulated switchgear components, ring main unit switchgear components and complete switchgear assemblies. We are dedicated to serving switchgear manufacturers and suppliers worldwide with responsive and comprehensive support. By combining deep industry knowledge with operational agility, we deliver superior value—ensuring robust performance, enhanced safety, and reduced total cost of ownership for our partners At Niuni Electric, we don't just supply parts, we build lasting relationships through trusted solutions and exceptional service that empowers your success. Square 5000 ㎡ Experience 10 + Served Countries 100 + Response 24 h Quality Control Quality is embedded at every stage. We rigorously test all materials prior to production and monitor manufacturing processes to ensure product stability. Before shipment, each unit undergoes comprehensive electrical, mechanical, and safety performance tests to comply with industry standards. Quick Response Our experienced service team provides 24/7 support year-round. Thanks to streamlined processes and a dedicated staff, we deliver 90% of quotations within 24 hours. Visit Our Factory --- - Published: 2025-05-31 - Modified: 2025-05-31 - URL: https://niunielec.com/successfully-sent-the-message/ Thank you for Your Submission! We have successfully received your form. Your information is very important to us. Our team will process your request as soon as possible and contact you if necessary. Your patience and understanding fuel our progress. Return to Home Page --- --- ## Posts - Published: 2025-09-18 - Modified: 2025-09-29 - URL: https://niunielec.com/news/key-guide-to-selecting-core-components-for-medium-voltage-switchgear/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories In modern power systems, medium-voltage switchgear is a critical component that ensures reliable and safe power delivery. The performance of switchgear heavily depends on its core components, including vacuum circuit breakers, current and voltage transformers, surge arresters, and various switchgear modules. Niuni Electric has over a decade of experience in the medium-voltage industry, specializing in components for 7. 2kV to 40. 5kV switchgear. Our product range includes vacuum circuit breakers, meta-clad switchgear parts, gas-insulated switchgear components, ring main unit components, and complete switchgear assemblies. Selecting high-quality core components allows switchgear manufacturers to improve reliability, extend service life, and reduce lifecycle costs. Niuni Electric’s professional team not only provides top-quality products but also offers technical consultation and comprehensive support to ensure each component performs optimally in real-world applications. --- - Published: 2025-09-18 - Modified: 2025-09-29 - URL: https://niunielec.com/news/the-vital-role-of-vacuum-circuit-breakers-in-medium-voltage-systems/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories In medium-voltage distribution systems, vacuum circuit breakers (VCBs) are one of the most crucial protective devices. They quickly interrupt fault currents to prevent equipment damage and electrical accidents from spreading. Niuni Electric provides high-quality vacuum circuit breakers for 7. 2kV to 40. 5kV systems, featuring fast operation, long service life, and low maintenance costs. Our products utilize advanced vacuum arc-extinguishing technology, ensuring stable performance even under frequent operation. Beyond reliability, we focus on safety and ease of operation. Collaborating closely with switchgear manufacturers, Niuni Electric delivers tailored solutions that improve operational efficiency while reducing maintenance efforts and total cost of ownership. Vacuum circuit breakers are not just protective devices—they are core safeguards that ensure operational continuity and electrical safety. Choosing Niuni Electric means selecting a trusted partner for high-performance, reliable solutions. --- - Published: 2025-09-18 - Modified: 2025-09-29 - URL: https://niunielec.com/news/modern-solutions-for-ring-main-unit-switchgear/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories Ring Main Unit (RMU) switchgear is widely used in urban distribution networks and industrial parks, playing a key role in power distribution and fault isolation. High-quality RMU components directly impact the stability and safety of power systems. Niuni Electric offers a full range of RMU switchgear components, covering both metal-clad and gas-insulated types. With over a decade of experience, we provide solutions ranging from individual components to complete switchgear assemblies. Using Niuni Electric’s RMU components, manufacturers can achieve: Higher reliability and operational safety Reduced maintenance costs Extended equipment service life Our team provides not only standardized products but also custom solutions tailored to client needs, ensuring each RMU switchgear operates at peak performance. Choosing Niuni Electric delivers a competitive advantage in power distribution systems. --- - Published: 2025-09-18 - Modified: 2025-09-29 - URL: https://niunielec.com/news/advantages-of-meta-clad-switchgear-components/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories Metal-clad (Meta-Clad) switchgear is widely adopted in medium-voltage distribution systems for its compact design and high reliability. High-quality metal-clad components ensure stable operation even in harsh environments while reducing maintenance requirements. Niuni Electric provides a range of Meta-Clad switchgear components, including busbars, isolators, breaker frames, and control units. Key advantages of our products include: High withstand voltage for diverse operating conditions Optimized structural design for operational safety Reduced total cost of ownership, maximizing long-term value With extensive industry experience and a professional technical team, Niuni Electric supports manufacturers throughout the design, production, and after-sales stages, ensuring that every assembly meets the highest standards for performance and safety. --- - Published: 2025-09-18 - Modified: 2025-09-29 - URL: https://niunielec.com/news/reliable-gas-insulated-switchgear-gis-solutions/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories Gas-insulated switchgear (GIS) is valued for its compact size, excellent insulation properties, and low maintenance requirements, making it an essential component in modern urban power systems. High-quality GIS components are crucial for ensuring system stability. Niuni Electric provides GIS components for 7. 2kV to 40. 5kV systems, including circuit breakers, isolators, and busbar assemblies. Our products feature: Gas insulation for high reliability Strong resistance to environmental interference Long service life and easy maintenance We focus on delivering tailored solutions to switchgear manufacturers and suppliers worldwide. Combining industry expertise with responsive support, Niuni Electric ensures each GIS assembly achieves maximum value and performance. Choosing Niuni Electric’s GIS components means reliable performance, system safety, lower operational costs, and long-term economic benefits. --- - Published: 2025-09-18 - Modified: 2025-11-07 - URL: https://niunielec.com/news/why-niuni-electric-is-your-trusted-medium-voltage-partner/ - Categories: Gas-Insulated Switchgear Components, Metal Clad Switchgear Components, MV Switchgear, News, Power Capacitor, Ring Main Unit Component, Transformer, Vacuum Circuit Breaker, VCB Accessories In the global medium-voltage industry, selecting a reliable component supplier is crucial for switchgear manufacturers. Niuni Electric is dedicated to providing cost-effective, reliable 7. 2kV to 40. 5kV medium-voltage switchgear components, including vacuum circuit breakers, transformers, metal-clad components, GIS components, and RMU assemblies. Assemblies We go beyond supplying products, offering professional technical support and responsive service to deliver complete solutions. Advantages of partnering with Niuni Electric include: Over a decade of industry expertise and deep understanding of switchgear design and application Customized product solutions to meet diverse client needs Enhanced safety, reliability, and operational efficiency of switchgear Reduced total cost of ownership and improved investment returns At Niuni Electric, we believe building long-term partnerships is more important than simply supplying parts. Through trusted products and exceptional service, we help our clients strengthen competitiveness, grow their business, and achieve sustainable development. --- --- ## Products - Published: 2025-11-04 - Modified: 2025-11-04 - URL: https://niunielec.com/product/zn63vs1-40-5-indoor-ac-high-voltage-vacuum-circuit-breaker/ - Product type: simple - Product categories: Vacuum Circuit Breaker, Vacuum Circuit Breaker, Metal Clad Switchgear Components, Ring Main Unit Component, Gas-Insulated Switchgear Components, Circuit Bearker, Transformer, Power Capacitor, MV Switchgear - Product tags: 36kv, 36kv vacuum circuit breaker, 40.5kv, vacuum circuit breaker, VCB This vacuum circuit breaker is designed for 40.5kV, 50Hz indoor switchgear. As a key protection and control component, it is ideal for frequent operations in power plants, substations, and industrial plants. ZN63(VS1)-40. 5 indoor AC high-voltage vacuum circuit breaker Vacuum Circuit Breaker Product descriptions ZN63(VS1)-40. 5 indoor AC high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is suitable for three-phase AC 50Hz,40. 5kV indoor handcart switchgear, and can be used as protection and control for industrial and mining enterprises, power plants and substations. Equipment, and suitable for places with frequent operations. The performance of this product conforms to the national standard GB1984-2003"AC High Voltage Circuit Breaker", JB3855"3. 6-40. 5KV Indoor AC High Voltage Vacuum Circuit Breaker”,GB/T11022-1999"Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards" and IEC62271-100 and other standards. Technical parameters No. ltem Unit Data 1 Rated voltage KV 40. 5 2 Rated current A 1250 1600 2000 2500 3 Rated short circuit breaking current KA 25 31. 5 25 31. 5 4 Rated dynamic stability current (peak) KA 63 80 63 80 5 4S thermal stability current KA 25 31. 5 25 31. 5 6 Rated short circuit closing current (peak) KA 63 80 63 80 7 Rated short circuit current breaking time Times 20 8 Rated operating sequence   O-0. 3s-CO-180s-CO 9 Rated insulation level 1 min power frequency withstand voltage KV 95 10   Lightning impulse withstand voltage(peak) Times 185   Mechanical life Times 10000 11 Rated single capacitor bank opening and closing current A 630 12 Rated back-to-back capacitor bank current A 400 13 Rated voltage of energy storage motor V AC/DC: 110; 220 14 Rated power of energy storage motor W ≤230... --- - Published: 2025-10-24 - Modified: 2025-10-29 - URL: https://niunielec.com/product/12kv-24kv-indoor-side-mounted-vacuum-circuit-breaker-high-voltage-vcb/ - Product type: simple - Product categories: Vacuum Circuit Breaker, Vacuum Circuit Breaker, Metal Clad Switchgear Components, Ring Main Unit Component, Gas-Insulated Switchgear Components, Circuit Bearker, Transformer, Power Capacitor, MV Switchgear - Product tags: 12KV vacuum circuit breaker, 24KV, vacuum circuit breaker, VCB Indoor high voltage side mounted vacuum circuit breaker (circuit breaker) is suitable for indoor switchgear of 12kV/24kV power system. As a protection and control unit for power grid equipment and industrial and mining enterprise power design, it is suitable for switching various loads of different nature, frequent operations, and multiple interruption of short-circuit current. 12Kv 24Kv Indoor Side Mounted Vacuum Circuit Breaker High Voltage VCB Vacuum Circuit Breaker Product descriptions The product adopts a new type of circuit breaker operating mechanism, The primary part of circuit breakercan use solid-sealed pole poles of international brands, and the vacuum interrupter and main conductive circuit parts can be solid-sealed into a whole Protect the interrupter from impact, dust and condensation Strong environmental adaptability, greatly reducing operation and maintenance costs The operating mechanism is integrated with the circuit breaker body, which has been verified by type tests With E2 electrical life, M12 mechanical life Environmental requirements: Ambient temperature: highest temperature + 4O℃, lowest temperature -15℃ Environmental humidity: daily average relative humidity ≤95%, monthly average relative humidity: ≤90%, daily average vapor pressure ≤22×10-3MPa, monthly average vapor pressure ≤1. 8×10-3MPa. Altitude: not more than 1000m; The earthquake intensity does not exceed 8 degrees; The surrounding air is not significantly polluted by dust, smoke, corrosive and/or flammable gas, steam or salt spray. Note: If it exceeds the requirements of the above normal use environmental conditions, it is necessary to negotiate with the manufacturer. Products based on standards: Comply with GB1984-2003 "High Voltage AC Circuit Breaker", JB3855-1996 "3. 6-40. 5KV) Indoor AC High Voltage Vacuum Circuit Breaker" DL/T403-2000 "12-40. 5KV High Voltage Vacuum Circuit Breaker Ordering Technical Conditions" and IEC62271-100 :2001 related requirements Technical parameters Parameter Unit Data 1 Rated voltage KV 12 2 Rated current A 630-1250 1250 1250 3 Rated short-circuit breaking current KA 20 25 31. 5 4 Rated... --- - Published: 2025-10-11 - Modified: 2025-10-11 - URL: https://niunielec.com/product/33kv-35kv-36kv-630a-indoor-sf6-gas-insulated-load-break-switch-lbs/ - Product type: simple - Product categories: Ring Main Unit Component, SF6 Load Break Switch - Product tags: 12KV LBS, 12kV load break switch, 24kV LBS, LBS, load break switch, SF6 load break switch FLN36-36 36KV indoor high-voltage SF6 load switch, an switchgear with the rated voltage of 36kV/40.5kV, adopted with SF6 gas as an arc-extinguishing and insulation medium, including the three contacts for switching-on and switching-off and to-ground, and is characteristic in its small volume, its convenient installation and operation and its the great adaptability with surroundings. FLN36-36 of an indoor high-voltage SF6 load switch and FLN36-36D of SF6 load switch plus fuse combination can function to protect and control the electric equipment for power supply and transformer substations especially being suitable for ring net cabinet, cable branch cabinet and distribution switching substation. They are complied with the standards of IEC60265-1-1998, IEC60420 etc. 33KV 35KV 36KV 630A Indoor SF6 Gas Insulated Load Break Switch LBS Service environment a) Air temperature Maximum temperature: +40°C; Minimum temperature:-5°C b) Humidity Monthly average humidity 95%; Daily average humidity 90% . c) Altitude above sea level Maximum installation altitude: 2500m d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. e) No frequent violent shake Technical Parameters No Item Unit Parameter 1 Rated voltage kV 36 2 Rated frequency Hz 50 / 60 3 Rated current A 630 4 1min Power frequency withstand voltage wet kV 95 dry kV 110 5 Lightning impulse withstand voltage kV 185 / 215 6 Rated short circuit breaking current (peak) kA 50 7 Rated active load and close circuit breaking current A 50 8 Rated transferring current A 1250 9 Rated short circuit making current (peak) kA 50 10 Rated cable(line) charging breaking current A 50 and 10 11 Cable charge breaking current in earthing fault A 20 12 Rated withstand current (peak) kA 50 13 Short time withstand current (2s) kA 20 14 Mechanism life times 2000 --- - Published: 2025-09-26 - Modified: 2025-09-26 - URL: https://niunielec.com/product/lateral-type-vacuum-circuit-breaker-2/ - Product type: simple - Product categories: Vacuum Circuit Breaker, VCB Accessories, Metal Clad Switchgear Components, Ring Main Unit Component, Gas-Insulated Switchgear Components, Circuit Bearker, Transformer, Power Capacitor, MV Switchgear (ZN63)VS1-12 indoor high voltoge handcart vacuum circuit breaker is applied to 7.2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus. The product conforms to IEC62271-100, GB1984. It can be used in KYN28A-12 and other center-mounted handcart switchgears. The fixed type could also be used in the XGN series fixed switchgear. Vacuum Circuit Breaker Technical parameters Main technical parameters Item name Unit Data Rated Voltage kv 12 Rated Short-Time Working Frequency Withstand Voltage(1 Min) kv 42 Rated Lightning Shock Withstand Voltage(Peak) kv 75 Rated Frequency Hz 50 Rated Current A 630 1250 1600. 2000. 2500. 3150. 4000 Rated Short Circuit Breaking Current KA 25 31. 5 40 Rated Short Time Withstand Current KA 25 31. 5 40 Rated Short Circuit Duration S 4 4 4 Rated Peak Withstand Current KA 63 80 100 Rated Short Circuit Closing Current KA 63 80 100 Secondary Circuit Power Frequency Withstand Voltage(1Min) V 2000 Rated Single/Back-To-Back Capacitor Bank Switchgear On And Off Current A 630/400 (40KA is 800/400) Rated Capacitor Bank Closing Current KA 12. 5 (frequency≤1000Hz) Break-Brake Time ms ≤50 Closing Time ms ≤70 Mechanical Life Times 30000 Wear Thickness Of Dynamic And Static Contacts Is Allowed mm 3 Rated Closing Operating Voltage V AC110/220 DC110/220 Rated Tripping Operating Voltage V AC110/220 DC110/220 Rated Voltage Of Energy Storage Motor V AC110/220 DC110/220 Rated Power Of Energy Storage Motor W 90 Energy Storage Time S ≤15 Contact From mm 9±1 Over Travel mm 3. 5±0. 5 Contact Closing Bounce Time ms ≤2 Three-Phase Separation And Closing Are Not Of The Same Period ms ≤2 Average Breaking Speed (Contact Separation-5Mm) m/s 0. 9--1. 3 Average Closing Speed (5Mm--Contact Closing) m/s 0. 6--1. 0 Break-Brake Overshoot mm ≤2 Main Circuit Resistance μΩ ≤50(630), ≤45(1000/1250), ≤35(1600/2000), ≤25(2500/3150), ≤20(4000) Contact Closing Pressure N 3100±200(25-31. 5KA) / 4600±2500(40KA) Operation Sequence... --- - Published: 2025-09-26 - Modified: 2025-09-29 - URL: https://niunielec.com/product/fln36-indoor-12kv-24kv-lbs-medium-voltage-sf6-gas-insulated-load-break-switch/ - Product type: simple - Product categories: Ring Main Unit Component, SF6 Load Break Switch - Product tags: 12KV LBS, 12kV load break switch, 24kV LBS, LBS, load break switch, SF6 load break switch The load breaker switch is a door-type medium voltage switchgear offering three operational states: closed, open, and grounded. Featuring a fully sealed, reinforced epoxy housing filled with SF6 gas at 0.05 MPa, it utilizes SF6 for insulation and arc extinguishing. The main circuit is epoxy-encapsulated within the housing, ensuring reliable conductivity. With minimal components, it delivers high reliability, maintenance-free operation, and safe, user-friendly performance. Application Usage: High Voltage Switchgear Material:Epoxy Resin Specification: 12KV SF6 load break switch Operating Condition 1. Altitude:≤1000m 2. Ambient temperature:+40°C~10°C 3. The relative humidity should not be more than 95%at+20°C ambient temperature Technical Parameters Item Unit Data Rated voltage KV 12 Rated frequency Hz 50 Rated current A 630 Rated current KA 50 4s rated short time withstand current KA 20 Rated making current KA 50 Rated breaking current Active load breaking current KA 630 Breaking current loop A 630 Cable charging breaking current A 10 1min power frequency withstand voltage (phase to phase,to earth,fracture) KV 42/48 Lightning impulse withstand voltage (phase to phase,to earth,fracture) KV 75/85 Relative pressure of SF6 gas (20℃ GP) MPa ≤0. 04 Rated operating voltage (electric) V AC220,DC220 Rated voltage of shunt release V AC220,DC220 Average opening speed M/S 3. 5±1. 5 Average closing speed M/S 3. 5±1. 6 Three-phase points,dosing phase of the same ms ≤3 The main circuit resistance μΩ ≤120 Manual maximum torque N. m ≤160 Phase to phase center distance mm 210±0. 5 --- - Published: 2025-09-18 - Modified: 2025-10-11 - URL: https://niunielec.com/product/lateral-type-vacuum-circuit-breaker/ - Product type: simple - Product categories: Vacuum Circuit Breaker, Vacuum Circuit Breaker - Product tags: 12KV vacuum circuit breaker, 24KV, vacuum circuit breaker, VCB (ZN63)VS1-12 indoor high voltoge handcart vacuum circuit breaker is applied to 7.2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus. The product conforms to IEC62271-100, GB1984. It can be used in KYN28A-12 and other center-mounted handcart switchgears. The fixed type could also be used in the XGN series fixed switchgear. Technical Parameters Main technical parameters Item name Unit Data Rated Voltage kv 12 Rated Short-Time Working Frequency Withstand Voltage(1 Min) kv 42 Rated Lightning Shock Withstand Voltage(Peak) kv 75 Rated Frequency Hz 50 Rated Current A 630 1250 1600. 2000. 2500. 3150. 4000 Rated Short Circuit Breaking Current KA 25 31. 5 40 Rated Short Time Withstand Current KA 25 31. 5 40 Rated Short Circuit Duration S 4 4 4 Rated Peak Withstand Current KA 63 80 100 Rated Short Circuit Closing Current KA 63 80 100 Secondary Circuit Power Frequency Withstand Voltage(1Min) V 2000 Rated Single/Back-To-Back Capacitor Bank Switchgear On And Off Current A 630/400 (40KA is 800/400) Rated Capacitor Bank Closing Current KA 12. 5 (frequency≤1000Hz) Break-Brake Time ms ≤50 Closing Time ms ≤70 Mechanical Life Times 30000 Wear Thickness Of Dynamic And Static Contacts Is Allowed mm 3 Rated Closing Operating Voltage V AC110/220 DC110/220 Rated Tripping Operating Voltage V AC110/220 DC110/220 Rated Voltage Of Energy Storage Motor V AC110/220 DC110/220 Rated Power Of Energy Storage Motor W 90 Energy Storage Time S ≤15 Contact From mm 9±1 Over Travel mm 3. 5±0. 5 Contact Closing Bounce Time ms ≤2 Three-Phase Separation And Closing Are Not Of The Same Period ms ≤2 Average Breaking Speed (Contact Separation-5Mm) m/s 0. 9–1. 3 Average Closing Speed (5Mm–Contact Closing) m/s 0. 6–1. 0 Break-Brake Overshoot mm ≤2 Main Circuit Resistance μΩ ≤50(630), ≤45(1000/1250), ≤35(1600/2000), ≤25(2500/3150), ≤20(4000) Contact Closing Pressure N 3100±200(25-31. 5KA) / 4600±2500(40KA) Operation Sequence O-0. 3s-CO-180S-CO Drawing --- ---