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Typical Applications
• Real estate & municipal projects: Temporary or permanent power supply for residential complexes, office buildings, and commercial developments — replacing traditional brick-and-mortar substation rooms and cutting construction time.
• Industrial parks & factories: Fast grid connection for new plants or production line expansions, especially useful for phased construction where power points need to be relocated more than once.
• Wind & solar farms: Used as step-up/step-down stations at outdoor generation sites with no shelter, built to withstand direct sun and rain exposure.
• Construction site temporary power: Once a project finishes, the whole unit can be lifted and relocated to the next site — high reuse value.
• Mines, ports, and terminals: Environments with heavy dust and humidity that need higher-protection outdoor equipment.
• Roads, metro, and airport infrastructure: Distributed installation points that reduce cable-run length.
What these scenarios have in common: scattered power demand points, limited civil works budget/timeline, and a need for fast installation with outdoor protection — exactly where a prefabricated substation outperforms a traditional substation building.
Core Functions
1. Integrated HV/LV design: HV incoming cabinet, transformer, and LV outgoing cabinet are combined and factory-wired/tested as one unit — on-site work is limited to cable connection.
2. Outdoor-rated enclosure: Rain-proof, dust-proof, sun-resistant, and corrosion-resistant construction designed for open-air installation without a civil works shelter.
3. Flexible HV configuration: Multiple main circuit schemes are available (cable/overhead incoming, single-outlet/multi-outlet, etc.) to match different site wiring requirements.
4. Optional metering & protection: PT/CT metering, surge arresters, fuse protection, and live display indicators can be added on request.
5. Small footprint: Significantly less land use and shorter construction lead time compared with a traditional substation room, ideal for space-constrained sites.
6. Fully transportable, reusable: Once a temporary project ends, the entire unit can be lifted and relocated for reuse — lowering long-term equipment cost.
Technical Parameters
Load Switch Technical Parameters
| Item | Unit | FKN12-12 Load Switch | FZN25-12 Vacuum Load Switch |
| Rated voltage | kV | 10 | 10 |
| Maximum operating voltage | kV | 12 | 12 |
| Rated frequency | Hz | 50 | 50 |
| Rated current | A | 630 | 630 |
| Rated breaking load current | A | 630 | 630 |
| Thermal stability current (RMS) | kA/S | 20/2 | 20/4 |
| Dynamic stability current | kA | 50 | 50 |
| Short-circuit shutdown current (peak) | kA | 50 | 50 |
| Number of full-load breaks | times | 20 | 10,000 |
| Mechanical life | times | 2,000 | 10,000 |
| 1min power-frequency withstand voltage (phase-to-phase / phase-to-earth) | kV | 42 | 42 |
| Lightning impulse voltage (phase-to-phase / phase-to-earth) | kV | 75 | 75 |
High-Voltage Fuse Technical Parameters
| UK Model | Equivalent Domestic Model | Rated Voltage (kV) | Breaking Current (A) | Breaking Current (kA) | Rated Melt Current (A) |
| SDL※J | XRNT-12 | 12 | 40 | 31.5 | 6.3, 10, 16, 20, 25, 31.5, 40 |
| SFL※J | XRNT-12 | 12 | 100 | 31.5 | 50, 63, 71, 80, 100 |
| SKL※J | XRNT-12 | 12 | 125 | 31.5 | 125 |
Note: "N" denotes without striker pin; "A" denotes with striker pin.
Low-Voltage Breaker (Frame Type) Technical Parameters
| Model | Trip Type | Trip Rated Current (A) | Breaking Capacity kA (AC380V) |
| DW15-630 | Thermal-magnetic / electronic | 315, 400, 630 | 40 |
| DW15-1000 | Thermal-magnetic / electronic | 630, 800, 1000 | 50 |
| DW15-1600 | Thermal-magnetic / electronic | 1600 | 50 |
| DW15-2500 | Thermal-magnetic / electronic | 1600, 2000, 2500 | 60 |
| CW1-2000 | Intelligent | 630, 800, 1000, 1250, 1600, 2000 | 65 (80) |
| CW1-3200 | Intelligent | 2000, 2500, 3200 | 100 |
Note: "(80)" indicates current-limiting breaking capacity.
Available Main Circuit (HV) Schemes — Selected Examples
| Scheme No. | Purpose | Cabinet Type | Load Switch | Fuse | Surge Arrester | Power Display |
| Scheme 1 | Terminal cable inlet / one outlet | HXGN-12 | 1 | 3 | 3 | 1 |
| Scheme 3 | Terminal overhead feeder inlet | HXGN-12 | 1 | 3 | 3 | 1 |
| Scheme 4 | Terminal vacuum circuit breaker feeder | XGN66-12 | — | — | 3 | 1 |
| Scheme 6 | Terminal inlet + metering + one outlet | HXGN-12 | 1 | 3+3 | 3 | 1 |
The full set of 12 configurable schemes (including circuit breakers, disconnectors, CT/PT combinations) is available on request — our engineers can help match a scheme to your local wiring standards.
Additional Specifications (Please Confirm With Sales Engineer)
| Item | Value |
| Transformer capacity range | ___ kVA |
| Enclosure protection rating | IP ___ |
| Overall dimensions (L × W × H) | ___ mm |
| Total weight | ___ kg |
| Applicable climate category | ___ |
| Certifications (CE / ISO, etc.) | ___ |
Why B2B Buyers Purchase This Product
Overseas B2B buyers typically choose this type of equipment for a few clear reasons:
• Launching a private label: Rebranding a full substation line under your own brand and selling through local electrical contractors or distributor networks.
• Bulk/wholesale supply: Electrical engineering contractors and equipment traders sourcing in volume to fulfill project bids or maintain regional stock for construction, municipal, and energy projects.
• Cost optimization: Sourcing complete substations directly from Yueqing, China — known as "China's Electrical Capital" — instead of local European manufacturing, cuts unit cost significantly while keeping the same technical standards and main circuit compatibility.
For the end customer, the core problem this product solves is: getting a safe, reliable 10kV-to-380V outdoor power distribution system installed in the shortest possible time, with minimal civil works investment — especially valuable for tight-schedule projects, sites with poor infrastructure, or projects that need to reuse the substation elsewhere later.
OEM / ODM Support
We support both OEM (private label) and ODM (custom design) production:
• Enclosure appearance, nameplate, and branding can be customized to your specifications.
• The HV main circuit scheme can be adjusted to match your local grid standards (incoming/outgoing method, metering approach, protection configuration).
• Transformer capacity and number of LV outgoing circuits can be configured to project requirements.
• Custom production based on customer-supplied drawings or technical specifications is supported.
• We can coordinate test reports and documentation to support your local certification process (exact scope subject to discussion).
Common Customer Pain Points We Solve
| Common Pain Point | How the YB-12/0.4（F·R） Solves It |
| Building a traditional substation room takes too long and costs too much | Factory pre-assembly — only cable connection is needed on site, cutting build time significantly |
| Projects are spread across multiple sites; building a substation room at each isn't practical | The unit is fully transportable and reusable, ideal for multi-site or temporary projects |
| Outdoor environments demand higher protection; standard indoor equipment fails outdoors | Purpose-built weatherproof, dust-proof, corrosion-resistant enclosure |
| Different countries/projects require different wiring standards; generic products don't fit | Multiple HV main circuit schemes available, customizable to local standards |
| Sourcing a full substation from multiple suppliers adds coordination cost | One supplier for HV cabinet, transformer, and LV cabinet — a single integrated purchase |
Who This Product Is For
This is an industrial-grade complete power distribution unit stepping 10kV down to 0.4kV, intended for buyers with electrical engineering expertise, including: electrical engineering contractors, electrical equipment distributors/traders, real estate developers, industrial park operators, and energy project investors.
This product is not suitable for residential users, individual consumers, or small retail shops. Installation and wiring must be carried out by a licensed electrician and must comply with local grid connection and safety regulations. If you are an individual or non-professional buyer, please contact your local utility provider for an appropriate solution.
FAQ
Can this unit be installed directly outdoors without a shelter?
Yes. The enclosure is purpose-built for outdoor installation, with rain, dust, and sun protection — this is its main advantage over indoor-rated switchgear.
What's the typical lead time?
Lead time depends on transformer capacity, HV scheme configuration, and order quantity. Please share your project requirements so our engineers can confirm.
Can the wiring scheme be customized to our local grid standard?
Yes. Multiple main circuit schemes are available, and our engineers can design a custom configuration based on your local grid standard and site conditions.
What's the minimum order quantity?
We support single-unit orders for individual projects as well as bulk trade orders. Please confirm MOQ with our sales team based on your specific needs.
Does the product meet European certification standards?
Certification scope depends on the exact configuration and your country's requirements. Please share your certification needs and we'll confirm what documentation is available.
Can the substation be relocated to a different project later?
Yes — this is one of the key advantages of a prefabricated substation over a fixed substation building. The enclosure and internal layout are designed to support full-unit lifting and relocation.
Do you offer OEM private-label production?
Yes. Enclosure branding, nameplates, and other details can be customized — happy to discuss specifics before you place an order.
For a complete technical scheme catalog, quotation, or configuration advice, please contact our engineering team — we'll provide one-on-one technical support based on your project requirements.
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