20 kV Switchgear Factory
Subian Electric manufactures medium voltage switchgear in Xuzhou, China, including the 20kV class used on 20kV distribution networks and industrial power systems. Built to 24kV maximum ratings, our panels combine vacuum circuit breakers, busbars and protection into compact metal-enclosed assemblies.
Produced in a 50,000-square-metre facility with in-house testing, our switchgear is delivered with drawings, test reports and technical support to projects in more than 50 countries since 2019.
Send your system voltage, busbar rating and panel arrangement, and our engineers will prepare the single-line diagram, panel layout and factory quotation.
Since 2019 · 50,000m² · 350+ Staff
Medium Voltage Switchgear We Manufacture
Metal-enclosed fixed and withdrawable switchgear, ring-main units and associated panels for 12kV, 20kV and 24kV systems with vacuum breaker technology.
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10kV Dry-Type Transformer-SCBH series Amorphous Alloy
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20-35KV Dry-Type Transformer
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20-35KV SCB Series Epoxy Resin Dry-Type Transformer
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20KV Oil-immersed Distribution Transformer
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35KV Oil-immersed Power Transformer
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6-10KV Oil-Immersed Power Distribution Transformer
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Current Transformer –10KV Indoor High Voltage
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Current Transformer–LMZK Wound Current Transformer300/5a
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Current Transformer–LSY-10 transformer Integrated CT
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current transformer–LXK high voltage zero sequence
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dry type distribution transformer-6-10 KV SCB series epoxy resin cast
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Electrical Transformers–JDZ – 10 Power Voltage
What Is 20 kV Switchgear?
20 kV switchgear is the metal-enclosed equipment that distributes power on a 20kV network – the class used widely in Europe and parts of Asia where 20kV is the standard distribution voltage. Each panel contains a vacuum circuit breaker or switch-fuse combination, current and voltage transformers, protection relays and busbars, all inside an earthed metal enclosure.
Choosing 20kV switchgear for a project means matching the network voltage (with a rated voltage of 24kV for equipment), the busbar and feeder currents, and the fault level the panels must withstand. Factory assembly and type testing give the operator a verified, safe design rather than a site-built assembly.
- 24 kV equipment class – covers 20kV networks with standard margins.
- Vacuum breaker technology – maintenance-light interruption inside each panel.
- Fixed or withdrawable – configurations for different maintenance philosophies.
- Metal-enclosed & earthed – arc-tested compartments protect operators.
- Protection integrated – relay, CT, VT and metering per feeder.
- Factory tested – routine checks and type-tested designs.
Panel Types We Offer
The right configuration depends on the duty and the operator’s maintenance practice:
Withdrawable breaker panels
the breaker can be racked out for maintenance; common for industrial and utility feeders.
Fixed-type panels
a simpler, lower-cost arrangement with the breaker fixed in place.
Ring-main units
compact switch-fuse or breaker units for secondary substations and loops.
20 kV Switchgear Technical Range
| Parameter | Specification |
|---|---|
| Rated voltage | 24 kV (for 20kV systems) |
| Rated current | 630 – 3,150 A |
| Breaking capacity | 25 / 31.5 kA |
| Configuration | fixed / withdrawable / RMU |
| Internal arc | arc-tested per standard |
| Protection | overcurrent, earth-fault, optional directional |
| Standards | IEC 62271-200 / GB 3906 |
Key Specification Data for 20 kV Panels
The figures that decide the panel size and cost are the busbar rating, the feeder current, the short-circuit (fault) level the assembly must withstand, and the internal arc rating. For a 20kV system, 630A feeders are typical for distribution duty, rising to 1,250-3,150A for incoming and large industrial supplies.
Protection is usually overcurrent and earth-fault per feeder, with directional or differential protection where the network requires it. Modern relays also give metering and communication, reducing the number of separate instruments in the panel.
Installation and Site Considerations
Metal-enclosed panels are installed indoors in a switch room or in outdoor kiosks, depending on the project. The room needs adequate ventilation, cable access from below or above, and space for breaker withdrawal where withdrawable panels are used.
Earthing and cable termination follow the local code; our drawings include the recommended clearances, cable zones and fixing details so the contractor can prepare the room before the panels arrive.
Panel Assembly and Test Capability
Busbar fabrication, breaker mounting, wiring and high-voltage testing are all performed in-house, so each panel arrives with its test records and wiring documentation.
Wiring & Integration
Secondary wiring, relays and CT/VT connections follow the approved schematic.
High-Voltage Testing
Power-frequency withstand and mechanical operation checks are carried out per panel.
Packing & Delivery
Panels are protected, marked and delivered with drawings and manuals.
20 kV Switchgear Price & Quotation
Send your single-line diagram or the number of feeder and incoming panels, and our engineers will confirm the configuration, protection scheme and factory quotation with lead time.
OEM / ODM & Wholesale Supply
Panel builders and EPC contractors take 20kV switchgear under project-specific branding with full documentation.
OEM / ODM
Factory-Direct
Custom panel arrangements and protection built to your specification.
Factory direct · Test docs · Export support
Wholesale Supply
Volume Pricing
Programme pricing for distributors and contractors.
Factory direct · Test docs · Export support
Distributor Support
Channel Partners
Drawings, test evidence and account management.
Factory direct · Test docs · Export support
10 kV, 20 kV or 35 kV – Which Distribution Level?
The choice is usually fixed by the existing network. Where the operator runs a 20kV system – common in parts of Europe and Asia – 24kV-class switchgear is the standard equipment. 12kV equipment serves 10kV and 11kV networks, and higher classes serve 33kV and 35kV systems.
If a project is free to choose, 20kV carries more power per feeder than 10kV with lower losses for the same load, at a higher equipment cost. Our engineers help evaluate the level against the local standard, the load density and the available protection practice before quoting the panels.
Choosing a 20 kV Switchgear Manufacturer
Verify the type-test certificates – particularly internal arc classification, rated short-time withstand and breaker breaking tests – for the exact voltage and current class. Then compare busbar material, enclosure protection (IP rating) and the protection relay options the manufacturer supports.
Subian manufactures the panels and can coordinate the transformer and LV board in the same project, with ISO9001, ISO14001, ISO45001, CE and UL certified systems. Drawings, test reports and spare-part support are part of the delivery scope.
Ask how the manufacturer handles protection coordination and relay settings: a supplier that engineers the scheme, not just the panels, saves commissioning time on site.
Certifications & Quality Assurance
Our switchgear production runs under ISO9001, ISO14001 and ISO45001 systems with CE and UL certification and type-tested panel designs.
Product Certifications
10 kV Dry-Type Transformer Certificate
35 kV Transformer CB Certificate
35 kV Transformer CE Verification
Transformer CE Certificate
Dry-Type Transformer Test Verification
ISO 14001 Environmental Management
ISO 45001 Health & Safety
ISO 9001 Quality Management
110 kV Transformer Type Test Report
UL Certificate of Compliance
20 kV Switchgear FAQ
Questions buyers ask when specifying 20kV switchgear for networks and projects.
What is 20kV switchgear?
What is the difference between 12kV and 24kV switchgear?
What are the main types of 20kV switchgear?
How do I select a 20kV switchgear panel?
What is the internal arc rating of a switchgear panel?
How much does 20kV switchgear cost?
Contact Subian
Need the Right Specification?
Tell us your target market, product type, quantity and technical requirements. Our team will help you identify a suitable configuration for your project.