# liqele.com ## Posts - [Remote-Controlled Outdoor Breakers: Write the I/O List Before Choosing a Protocol](https://liqele.com/outdoor-circuit-breaker-remote-control/): A protocol name does not define command authority or confirmed state. Build the end-to-end I/O list and map each point to its source, meaning and responsible interface. - [Lebanese Customer Visits Liqiang to Discuss GN27 Disconnector Customization](https://liqele.com/lebanon-customer-visit-gn27-disconnector/): A customer from Lebanon toured Liqiang’s factory and discussed GN27 disconnector changes and a two-sample evaluation plan. - [PTs and Voltage Sensors for Outdoor Breakers: Measurement Is Not Auxiliary Power](https://liqele.com/outdoor-breaker-pt-voltage-sensor/): A voltage signal does not establish usable operating power. Specify the measurement interface and controller or mechanism supply duty separately for the selected arrangement. - [CT Specifications for Outdoor Breakers: Ratio, Outputs and Controller Inputs](https://liqele.com/outdoor-circuit-breaker-ct-selection/): A CT ratio does not establish controller compatibility. Match the sensing function, output, accuracy conditions, connected burden, input and circuit configuration. - [Outdoor Circuit Breaker or Complete Recloser System? Define the Supply Boundary](https://liqele.com/outdoor-circuit-breaker-vs-recloser/): A motor-operated outdoor breaker does not establish a complete automatic-reclosing supply. Define the matched functions, energy, interfaces and integration responsibilities. - [ZW20 vs ZW32: Comparing Outdoor Breaker Configurations for a Project](https://liqele.com/zw20-vs-zw32-circuit-breaker/): Compare exact outdoor breaker offers against one project specification. The family names do not establish the same insulation, mechanism, controller or included accessories. - [Replacing a VCB Without Complete Drawings: How to Prepare a Useful Enquiry](https://liqele.com/vacuum-circuit-breaker-replacement-enquiry/): Missing drawings need specific questions, not guessed compatibility. Organise the old equipment identity, present requirements, available evidence and open interfaces into a useful enquiry. - [Indoor VCB Installation Dimensions: Pole Spacing, Contact Height and Cabinet Fit](https://liqele.com/indoor-vcb-installation-dimensions/): Cabinet width and an overall outline do not establish replacement fit. Reconcile contact coordinates, mounting or carriage datums and the selected cabinet interfaces. - [VCB Secondary Plug Compatibility: What to Check Before Ordering a Replacement](https://liqele.com/vcb-secondary-plug-compatibility/): A secondary plug that mates is not yet a confirmed replacement. Reconcile the connector identity, drawing view and every circuit function before ordering the selected breaker configuration. - [VCB Control Voltage: Specify the Trip Coil, Close Coil and Charging Motor Separately](https://liqele.com/vacuum-circuit-breaker-control-voltage/): A single control-voltage label leaves three different loads unresolved. Record each supply, the conditions available at the load and the matching component and circuit documents before ordering. - [Fixed vs Withdrawable VCBs: Planning Removal, Handling and Maintenance Space](https://liqele.com/fixed-vs-withdrawable-vacuum-circuit-breaker/): A maintenance layout must connect the installed breaker, its removal route, suitable handling support and a ready spare. Compare the complete exchange task before choosing an arrangement. - [Vacuum Circuit Breaker Manufacturing: Assembly, Adjustment and Inspection](https://liqele.com/vacuum-circuit-breaker-manufacturing/): How vacuum circuit breaker parts become a coordinated device through assembly, adjustment and inspection, using actual VS1 process relationships and a practical configuration-change example. - [Type-Test Reports, Factory Inspection Records and ISO Certificates: What Each Proves](https://liqele.com/type-test-reports-factory-records-iso-certificates/): A practical comparison of design-test evidence, production inspection records and management-system certification, with a clear way to organize an equipment order’s documents. - [How to Select Medium-Voltage Switching Devices: Function, Ratings, Installation and Control](https://liqele.com/select-medium-voltage-switching-devices/): A practical selection path for medium-voltage switching equipment, using real fixed and withdrawable VS1 configuration fields, outdoor choices and useful project inputs. - [Switching and Protection in Medium-Voltage Feeders: Circuit Breakers and Switch-Fuse Combinations](https://liqele.com/medium-voltage-feeder-switching-protection/): How relay-and-breaker feeders and coordinated switch-fuse branches detect, interrupt and respond to faults, with practical transformer and upstream/downstream coordination reasoning. - [Medium-Voltage Switching Device Ratings Explained: Voltage, Current, Breaking, Making and Withstand Duties](https://liqele.com/medium-voltage-switching-device-ratings/): A practical explanation of MV switching-device ratings: temperature rise, insulation stress, arc interruption, closing peaks and fault-current withstand, with real VS1 and FKN12 table examples. - [What Is an Earthing Switch? Function, Making Duty and Withstand Ratings](https://liqele.com/what-is-an-earthing-switch/): A practical explanation of earthing-switch contacts, conductive connections and motion, with separate short-circuit making, short-time and peak withstand duties. - [What Is a Disconnector? Isolation Function and Application Boundaries](https://liqele.com/what-is-a-disconnector/): A practical explanation of disconnector contacts, insulation, drive and isolation gaps, with actual GN examples and useful breaker-bay application reasoning. - [What Is a Load Break Switch? Switching Duties, Types and Limitations](https://liqele.com/what-is-a-load-break-switch/): A practical explanation of load-break-switch contact and arc-control relationships, type labels, and the roles of a specified switch-fuse arrangement. - [What Is a Vacuum Circuit Breaker? Structure, Working Principle and Applications](https://liqele.com/what-is-a-vacuum-circuit-breaker/): Understand the vacuum circuit breaker from its physical parts to metal-vapour arcing, AC current zero, contact-gap recovery and practical indoor or outdoor integration. - [Medium-Voltage Switching Devices Explained: Breaking, Isolation and Earthing](https://liqele.com/medium-voltage-switching-devices-explained/): A practical functional overview of medium-voltage switching devices: how interruption, load switching, isolation and earthing work together in a distribution system. ## Pages - [Project References](https://liqele.com/projects/): Field photographs of overhead feeder equipment, industrial switchrooms and building power distribution. - [Manufacturing & Quality](https://liqele.com/about/manufacturing-quality/): Inside Liqiang's switching-device workshop: assembly, adjustment, inspection and the documents that support equipment selection. - [VZF-12 / VZFR-12 Vacuum Load Switch Family | Liqiang](https://liqele.com/products/vzf/): Images show the VZFR-12 switch-fuse combination. Confirm the selected arrangement and cabinet fit against the approved order drawing. - [FZN64-12 Indoor Vacuum Load Break Switch | Liqiang](https://liqele.com/products/fzn64/): Illustrated FZN64-12GD/630-25 arrangement. Confirm the selected model and cabinet fit against the approved order drawing. - [FKN12-12 Indoor Air-Blast Load Break Switch | Liqiang](https://liqele.com/products/fkn12/): The photographs show the bare FKN load-switch structure. FKRN models are separate load-switch/fuse combinations. - [ZW32-12 Outdoor Vacuum Circuit Breaker](https://liqele.com/products/zw32-12/): Images show an integral-disconnector arrangement. Check the selected equipment layout against the approved order drawing. - [ZW20-12 Outdoor Vacuum Boundary Circuit Breaker](https://liqele.com/products/zw20/): Check the selected breaker, sensing package and mounting arrangement against the approved order drawing. - [ZN85-40.5 Indoor Vacuum Circuit Breaker](https://liqele.com/products/zn85-40-5/): Withdrawable handcart shown. Match the primary contacts and carriage to the approved cabinet drawing. - [VS1-24 Indoor Vacuum Circuit Breaker](https://liqele.com/products/vs1-24/): Side-mounted arrangement shown. Match mounting points, pole spacing and control terminals to the approved order drawing. - [JN15-12 Indoor Earthing Switch](https://liqele.com/products/jn15/): JN15-12 assembly shown. Match the phase spacing, sensors, operating direction and shaft interfaces to the approved order drawing. - [GN27-40.5 Indoor Isolating Switch](https://liqele.com/products/gn27/): Three-pole arrangement shown. Match the mounting form, earthing arrangement and operating linkage to the approved order drawing. - [GN30-12 Indoor Rotary Disconnector](https://liqele.com/products/gn30-12/): Standard-form GN30-12 assembly shown. The GN30-12D version adds earthing blades. Match the mounting form and operating linkage to the approved order drawing. - [GN19-12 Indoor High-Voltage Disconnector](https://liqele.com/products/gn19-12/): Three-pole arrangement shown. Match the mounting form, phase spacing and operating linkage to the approved order drawing. - [FZN25 Indoor Vacuum Load Switch](https://liqele.com/products/fzn25/): Three-pole assembly and single-pole module views. Confirm the selected earthing and operating arrangement against the approved order drawing. - [VQL-24GD Side-Mounted Three-Position Vacuum Circuit Breaker](https://liqele.com/products/vql-24/): AI-assisted illustrations of the VQL-24GD arrangement. Confirm the actual ordered assembly and interfaces against the approved drawing. - [VQLA-12GD Middle-Mounted Three-Position Vacuum Circuit Breaker](https://liqele.com/products/vqla-12/): VQLA-12GD/630-25 assembly shown. Match the complete model, current / breaking-duty pair and cabinet interfaces to the approved order drawing. - [VQL-12G(D) Three-Station Vacuum Circuit Breaker](https://liqele.com/products/vql-12/): Three distinct views of the VQL-12 product. Confirm handedness, earthing-switch position and panel interfaces for the selected order. - [Buildings & Infrastructure](https://liqele.com/applications/buildings-infrastructure/): Review transformer-supply and cabinet requirements, then distinguish load switching, fuse-combination protection, isolation and earthing. - [Industrial Power Distribution](https://liqele.com/applications/industrial-power/): Review indoor vacuum circuit breakers against the electrical duty, cabinet construction, mechanism and secondary circuit. - [Outdoor Distribution Networks](https://liqele.com/applications/outdoor-distribution/): Coordinate ZW20 and ZW32-12 equipment with the feeder duty, installation support, sensing and control arrangement. - [VS1-12 Indoor Vacuum Circuit Breaker](https://liqele.com/products/vs1-12/): Choose a view to inspect the breaker and its contacts. - [Downloads](https://liqele.com/technical-support/downloads/): Find the catalogue and operating manuals for your product family. - [Technical Articles](https://liqele.com/technical-support/technical-articles/): Read the Technical Articles in the article library. - [FAQ](https://liqele.com/technical-support/faq/): Prepare a clearer inquiry and identify the product documents needed for selection, cabinet integration and operation. - [Disconnectors & Earthing Switches](https://liqele.com/products/disconnectors-earthing-switches/): Liqiang manufactures indoor disconnectors and earthing switches for medium-voltage switchgear. - [Load Break Switches](https://liqele.com/products/load-break-switches/): Liqiang manufactures indoor load break switches for medium-voltage switchgear. - [Outdoor Vacuum Circuit Breakers](https://liqele.com/products/outdoor-vacuum-circuit-breakers/): Liqiang manufactures outdoor vacuum circuit breakers for distribution feeders. Review the ZW20 and ZW32-12 families for outdoor feeder installations. - [Indoor Vacuum Circuit Breakers](https://liqele.com/products/indoor-vacuum-circuit-breakers/): Liqiang manufactures indoor vacuum circuit breakers for medium-voltage switchgear. - [Technical Resources](https://liqele.com/technical-support/): Find the catalogue, model manuals and configuration guides for your installation. - [Applications](https://liqele.com/applications/): From outdoor feeders to indoor panels, the installation defines the switching duty, operating arrangement and interfaces. - [Products](https://liqele.com/products/): Liqiang manufactures indoor and outdoor vacuum circuit breakers, load break switches, disconnectors and earthing switches. - [Privacy Policy](https://liqele.com/privacy-policy/): How Zhejiang Liqiang Intelligent Equipment Co., Ltd. handles information you share when asking about our products, drawings and project requirements. - [Contact](https://liqele.com/contact/): Send the model or product family, required electrical ratings and installation details. - [Technical articles](https://liqele.com/blog/): Technical articles on medium-voltage switching devices, electrical ratings, product selection, installation, manufacturing and inspection. - [Company](https://liqele.com/about/): Zhejiang Liqiang Intelligent Equipment Co., Ltd. - [Home](https://liqele.com/): Liqiang manufactures vacuum circuit breakers, load break switches, disconnectors and earthing switches for indoor switchgear and outdoor distribution feeders. ## Optional - [Agent (MCP protocol)](websites-agents.hostinger.com/liqele.com/mcp) [comment]: # (Generated by Hostinger Tools Plugin)