Types of Switchgear Cabinets We Manufacture
HV Switchgear Cabinet
35kV receiving substations. SF6 / vacuum breaker, 3 compartments, up to 2500A / 31.5kA. Compatible with IEC 62271 & GB 3906.
LV Switchgear Cabinet
Complete low-voltage range: MNS withdrawable (up to 4000A), GGD fixed (economical), GCK drawer-type (interchangeable), XL-21 wall-mounted. Copper busbar standard.
Ring Main Unit (RMU)
Compact metal-enclosed RMU for secondary distribution. SF6-gas or solid insulation, 1-in-1-out / 1-in-2-out, up to 630A / 20kA load break.
Metal-Enclosed Ring Main Unit
24kV air-insulated RMU for urban and industrial cable networks. Modular LBS / TP / CB cubicles, IEC 62271-200 and GB 3906 certified.
Metal-Clad Withdrawable Switchgear Cabinet
The workhorse of 10–12kV indoor substations. Vacuum circuit breaker truck, microprocessor relay, IEC 62271-200 compliant, up to 3150A / 31.5kA.
Load Break Switch (for RMU)
Spring-operated three-position LBS used inside RMU cabinets. 630A / 1250A, 20kA short-time withstand, ideal for ring main applications.
Outdoor Vacuum Circuit Breaker
Outdoor pole-mounted VCB for 12kV / 24kV overhead lines. Smart / manual options, paired with our switchgear cabinets for grid automation.
Pre-Assembled Energy Box Substation
Compact substation integrating HV switchgear + transformer + LV switchgear cabinet in a single enclosure. Plug-and-play for utility & renewable projects.
Fixed-Type Switchgear Cabinet
Economical fixed switchgear for cable distribution networks. Simple structure, easy maintenance, suitable for outdoor compact substations.
Key Components Inside a Switchgear Cabinet
A switchgear cabinet is not a simple metal box - it is a carefully engineered system in which three groups of components work together: main power components (carrying and regulating the current), protection & control devices (watching and safeguarding the system), and structural & support components (housing, insulating and cooling everything). Below is what is actually inside every GNEE switchgear cabinet, with the typical specifications we deliver.
① Main Power Components
| Component |
Function |
GNEE Typical Specification |
| Circuit Breaker (VCB / MCCB / ACB) |
The first line of protection. Automatically interrupts the circuit on overload or short circuit, and can be manually operated to isolate the circuit for maintenance. |
MV: vacuum circuit breaker (VCB), mechanical life >30,000 operations, opening time ≤20 ms; LV: MCCB / ACB up to 6300 A. Branded options: CHINT / Delixi / ABB / Schneider. |
| Disconnector / Isolator |
Physically isolates a section of the system from the source, creating a visible break point so maintenance personnel are safe. Unlike a breaker, it cannot interrupt load current. |
Rated 12 – 40.5 kV, three-position (closed / open / earthed), integrated interlocking prevents mis-operation, complies with IEC 62271-102. |
| Busbar System |
The main power distribution path. Connects the incoming supply to every outgoing circuit with minimum resistance and heat. |
High-purity tin-plated copper busbar as standard (aluminum on request). Low-impedance layout, epoxy-resin insulated, tested for short-time withstand up to 31.5 kA / 4 s. |
| Current / Voltage Transformers (CT / VT) |
Step down large currents and high voltages to measurable, safe levels for metering, protection and monitoring. |
Accuracy class 0.5 (metering) / 5P10 (protection), low-saturation design to prevent relay mis-operation, indoor epoxy-cast insulation. |
| Auxiliary Power Transformer |
Supplies low-voltage auxiliary power for control circuits, relays and instruments inside the cabinet. |
Compact dry-type, energy efficiency IE2+, noise ≤50 dB, anti-moisture epoxy casting - ideal for indoor switchgear cabinet rooms. |
② Protection & Control Devices
| Component |
Function |
GNEE Typical Specification |
| Protection Relay |
The "brain" of the switchgear cabinet. Continuously monitors current, voltage and frequency; sends a tripping signal to the breaker when an abnormal condition (overcurrent, earth fault, under-voltage) is detected. |
Digital microprocessor relay with programmable logic - feeder / motor / transformer protection curves. Communication: Modbus-RTU / IEC 61850, SCADA ready. |
| Contactor |
Remotely switches large loads on and off; withstands frequent operation and high inrush currents. |
Silver-nickel alloy contacts, electrical life >1 million operations, and IP65 dust-proof/moisture-proof versions for mining and chemical plants. |
| Interlocking System |
Prevents dangerous operations-opening the door while live, or racking the breaker with the switch closed. Mechanical + electrical double locking. |
A full five-prevention interlock: prevents mis-closing, mis-opening, live earthing, earthed closing, and entry to live compartments. OSHA & IEC compliant. |
| Meters & Indicators |
Give real-time feedback on current, voltage, power and component status for operators and remote monitoring. |
Digital multi-function LCD meter (V / A / kW / kWh / PF), color-coded LED status indicators, optional cloud / SCADA telemetry. |
| Surge Protection Device (SPD) |
Diverts lightning and switching surges to earth before they reach sensitive electronics-increasingly essential for smart grids and data centers. |
Type 1 + Type 2 SPD combination at the incoming position, 20 – 40 kA (8/20 μs) per mode, replaceable modules with status window. |
| Fuse Switch Disconnector |
Combines fuse protection and manual isolation in one device for outgoing feeder circuits (motors, control panels, sub-distributions). |
630 – 1250 A (RMU) / up to 630 A (LV feeders), high breaking capacity, compact flange design. |
③ Structural & Support Components
| Component |
Function |
GNEE Typical Specification |
| Cabinet Enclosure |
The external shell that keeps out dust, moisture, physical damage and unauthorized contact. |
Galvanized steel or cold-rolled steel with powder coating (RAL 7035 standard, other RAL on request), 1.5 – 2.0 mm plate, IP30 (indoor) to IP65 (outdoor), removable panels, double-door or sectional design optional. |
| Insulators & Busbar Supports |
Maintain electrical isolation between conductors and the cabinet body; hold busbars firmly against electromagnetic forces during short circuits. |
Epoxy-resin and ceramic insulators, DMC / SMC busbar supports - high dielectric strength, heat resistance, tracking-proof. |
| Ventilation & Cooling System |
Prevents overheating, which accelerates insulation aging and shortens component life. |
Forced air cooling (fan auto-start >40 °C) for MV cabinets; natural ventilation with optimized louvre grid for LV; anti-condensation heater with thermostat as standard for humid climates. |
| Cable Terminals |
Connect external cables to cabinet components with reliable conductivity and low contact resistance. |
Copper / aluminum terminals for 16 – 400 mm² cables, crimped connection, anti-oxidation coating, anti-vibration terminals for wind-power installations. |
| Earthing System |
Conducts fault current safely to earth, protecting equipment and personnel from electric shock. |
Complete earthing system - copper earth bar, connecting straps, earthing switch - withstands fault current up to 50 kA, complies with IEEE 80 safe-earthing practice. |
Every component above is type-tested together as a complete switchgear cabinet assembly (not as loose parts), so the ratings you specify - voltage, current, breaking capacity, IP degree - are guaranteed as a whole. Ask for the full component BOM with your quotation.
How a Switchgear Cabinet Works - Step by Step
Understanding the power flow inside the cabinet makes it much easier to specify, install and maintain. In a typical metal-clad switchgear cabinet, the electrical energy follows this path:
① Incoming Cable/Transformer Feeder
Power enters the cabinet
② Main Switch / Incoming Breaker
Protects the whole cabinet
③ Main Busbar
Distributes power to all feeders
④ Outgoing Breaker / LBS / Fuse
Each circuit protected individually
⑤ CT / VT + Relay
Measures and supervises every circuit
⑥ Load
Factory, building, substation or PV plant
The incoming feeder enters through the cable compartment and connects to the main incoming breaker.
The breaker feeds the main busbar, which runs horizontally through the busbar compartment and supplies every outgoing circuit.
Each outgoing feeder is protected by its own breaker, fuse switch disconnector or load-break switch.
Current transformers on each feeder step the current down to the protection relay, which continuously compares the measured value against the protection setting.
When a fault occurs - overload, short circuit or earth fault - the relay trips the breaker within milliseconds, isolating only the faulty feeder while the rest of the system keeps running.
Surge protection devices divert lightning and switching surges to earth, while the earthing system provides a safe path for any residual fault current.
This is why the switchgear cabinet is described as the "central nervous system" of a power network: every function - carrying, controlling, protecting, measuring, isolating - happens inside one engineered assembly, and each component depends on the correct operation of the others.
Switchgear Cabinet Specifications at a Glance
Full type test reports (dielectric, temperature-rise, short-circuit withstand, mechanical endurance) ship with every order. Ask our engineers for the test report package.
| Parameter |
KYN28-12 (HV) |
KYN61-40.5 (HV) |
HXGN15-12 / XGN-24 (RMU) |
MNS / GGD / GCK (LV) |
| Rated voltage |
12 kV |
40.5 kV |
12 kV / 24 kV |
380 V / 660 V |
| Rated current |
630 – 3150 A |
630 – 2500 A |
630 A (LBS) / 1250 A (CB) |
up to 4000 A |
| Breaking capacity |
25 – 31.5 kA / 4s |
25 – 31.5 kA / 4s |
20 kA (load break) |
65 – 100 kA (busbar) |
| Short-time withstand |
31.5 kA / 4s |
31.5 kA / 4s |
20 kA / 2s |
50 – 100 kA / 1s |
| Protection degree |
IP4X enclosure |
IP4X enclosure |
IP3X – IP4X |
IP30 – IP54 |
| Operating mechanism |
Spring (vacuum CB) |
Spring (vacuum CB) |
Spring (LBS) / Motor |
Manual / Motor |
| Standards |
IEC 62271-200, GB 3906 |
IEC 62271-200, GB 3906 |
IEC 62271-200, IEC 62271-103, GB 3804, GB 3906 |
IEC 61439, GB 7251 |
| Certifications |
CE, ISO 9001, type test |
CE, ISO 9001, type test |
CE, ISO 9001, type test |
CE, ISO 9001 |
| Busbar material |
Copper (tin-plated) |
Copper (tin-plated) |
Copper (tin-plated) |
Copper (tin-plated) |
| Enclosure |
2.0 mm cold-rolled steel, RAL 7035 |
2.0 mm cold-rolled steel, RAL 7035 |
2.0 mm cold-rolled steel, RAL 7035 |
1.5–2.0 mm, RAL 7035 / SS304 |
Switchgear Cabinet vs Distribution Cabinet vs Panel - Terms Explained
Buyers often use "switchgear cabinet", "distribution cabinet", "panel" and "RMU" interchangeably - but they are different products with different roles. Here is the distinction in plain language, so you specify the right equipment the first time.
| Term |
Definition |
Where You Use It |
| Switchgear Cabinet |
An assembly of circuit breakers, disconnectors, busbars, CT/VT and protection relays used to control, protect and isolate power at the system level - from the transformer / incoming feeder down to distribution points. Larger, floor-standing, installed in substations and dedicated switchgear rooms. |
Substations, power plants, industrial plant incoming & feeder panels, PV plant HV/MV interface (12 – 40.5 kV, or 380 – 660 V LV switchgear cabinet). |
| Distribution Cabinet / Box |
The final equipment of the distribution system. It takes power from the upper-level distribution equipment and delivers it to the nearest loads, with protection, monitoring and control for that zone. Smaller, often wall-mounted, can be recessed into a wall. |
Final distribution to floors, workshops, residential buildings, street lighting, small machines. See our distribution box family (JXF / JP / combiner box / junction box). |
| Distribution Board / Panel (DB) |
A panel that divides an incoming electrical supply into subsidiary circuits, each protected by a fuse or miniature circuit breaker (MCB). Sometimes called a consumer unit in residential use. |
Commercial and residential final circuits; typically what an electrician installs on each floor or dwelling. |
| Ring Main Unit (RMU) |
A compact, fully metal-enclosed switchgear cabinet used in 12 – 24 kV secondary distribution cable networks. Integrates load-break switches, fuses and (optionally) a vacuum circuit breaker in one small cubicle - a type of switchgear cabinet, not a separate category. |
Urban cable rings, pad-mounted substations, commercial buildings, and solar farms where space is limited. |
| Motor Control Center (MCC) |
A switchgear / controlgear assembly specifically arranged to control and protect motors, usually with contactors, overload relays and disconnectors per feeder. |
Industrial plants with many motors - pumps, fans, conveyors, compressors. |
| Metering Cabinet |
A cabinet housing CTs, VTs, meters and (optionally) tariff equipment for energy measurement at a boundary point. |
Utility billing points, sub-metering for tenants, PV plant generation metering. |
Rule of thumb: if it protects the system and stands at the transformer / incoming level → switchgear cabinet. If it feeds the end loads and sits close to the user → distribution cabinet / board. GNEE manufactures both - and because we build the whole chain, the interface between your switchgear cabinet and your distribution boxes is engineered to match, not improvised.
Inside the Switchgear Cabinet - Five Independent Compartments
Modern metal-clad switchgear cabinets (KYN / XGN series) divide the cubicle into five fully compartmentalized sections. This segregation is critical for arc-flash safety, easy maintenance, and operation continuity.
① Busbar Compartment
Main horizontal copper busbars with epoxy-resin insulation, segregated from other compartments by metal partitions.
② Switch Room (Circuit Breaker Compartment)
Withdrawable vacuum circuit breaker truck, plug-in primary contacts, automatic shutters, mechanical interlocks for safe racking.
③ Cable Compartment
Current transformers, voltage transformers, surge arresters, earthing switch, and cable terminations.
④ Operating Mechanism & Interlocking Compartment
Spring charging motor, closing / opening coils, auxiliary switches, position indicators, and full five-prevention mechanical interlock.
⑤ Low-Voltage Control Room
Microprocessor protection relay, meter, control switches, terminals - easily accessible from the front door without entering HV compartments.
Switchgear Cabinet Standards We Comply With
Every switchgear cabinet leaves our factory tested against international and Chinese national standards. The standards we routinely apply include:
International (IEC)
IEC 62271-200 - Metal-enclosed AC switchgear & controlgear above 1 kV (the core standard for HV switchgear cabinet)
IEC 62271-1 - Common specifications for HV switchgear
IEC 62271-100 - High-voltage alternating-current circuit-breakers
IEC 62271-102 - AC disconnectors and earthing switches
IEC 62271-105 - HV AC switch-fuse combinations
IEC 62271-200 (1 kV – 52 kV inclusive)
IEC 60529 - Degrees of protection (IP code)
IEC 61439 - Low-voltage switchgear and controlgear assemblies
Chinese National (GB / GB-T)
GB 3906 - 3.6 kV – 40.5 kV AC metal-enclosed switchgear
GB/T 11022 - Common technical requirements for HV switchgear
GB/T 1984 - High-voltage AC circuit-breakers
GB/T 1985 - HV AC disconnectors and earthing switches
GB/T 3804 - 3.6 kV – 40.5 kV HV AC load switches
GB/T 16926 - HV AC load switch-fuse combinations
GB 7251 - Low-voltage switchgear assemblies (LV switchgear cabinet)
GB/T 34936 - Photovoltaic DC combiner-box requirements
How Switchgear Cabinets Are Classified
There are four practical ways to classify a switchgear cabinet - by voltage level, by construction, by breaker installation, and by installation site. Knowing where your project sits in each dimension lets you describe the product precisely in your inquiry and get an accurate quotation fast.
① By Voltage Level
- HV switchgear cabinet - 12 kV / 24 kV / 40.5 kV (KYN28-12, KYN61-40.5), used at substation and plant receiving level
- MV switchgear - 3.6 – 40.5 kV metal-enclosed & RMU classes (overlaps HV in IEC usage)
- LV switchgear cabinet - 380 V / 660 V (MNS / GGD / GCK / XL-21), downstream of the transformer
② By Construction
- Open-type switchgear - economical, no full enclosure, indoor only
- Metal-enclosed switchgear - all live parts enclosed in earthed metal, XGN series
- Metal-clad (armoured) switchgear - compartments fully segregated with metal partitions, KYN series - highest arc-flash safety
- Gas-insulated (GIS) - SF6 / solid-insulated compact cubicles for space-critical sites
③ By Circuit-Breaker Installation
- Withdrawable switchgear - breaker on a removable truck (KYN28 / KYN61 / MNS): maintenance without shutting the whole bus
- Fixed switchgear - breaker bolted in place (XGN66 / GGD / XL-21): simpler, lower cost, full bus shutdown required for breaker service
④ By Installation Site
- Indoor switchgear cabinet - IP3X – IP4X, natural or forced ventilation
- Outdoor switchgear cabinet - IP54 – IP65, UV-resistant coating, anti-condensation heater, SS304 / SS316 enclosure option
- Containerized / pad-mounted - RMU or compact GIS inside outdoor kiosks / substations
Switchgear Cabinet Applications by Market
We configure the switchgear cabinet to the local grid standard, ambient conditions, and protection philosophy of each target market. Below are the configurations most frequently exported.
Southeast Asia (12 / 24 kV)
KYN28 feeder panels for 22kV urban substation loops
RMU for 12kV cable networks in the Philippines, Indonesia, Vietnam
IP54 enclosures for tropical humidity (≤ 95%)
Middle East (11 / 22 / 33 kV)
High-temperature switchgear cabinet rated 50 °C ambient
Desert-dust protection with IP54 + filtered ventilation
IEC + SASO / SABER compliance for Saudi Arabia, UAE
KYN61 receiving substations for Nigeria, Kenya, Tanzania
French-standard cable termination as option
Containerized switchgear for rapid deployment
LV switchgear cabinet for commercial building projects
EN 61439-1 / -2 verified assemblies
RoHS-compliant materials for EU markets
South America (13.8 / 23 / 34.5 kV)
Custom switchgear cabinet matching US-style cable & protection
IEEE C37.20.1 / C37.20.7 arc-resistant options
Spanish-language manuals and labeling
Australia & Oceania (11 / 22 / 33 kV)
AS / NZS 61439 LV switchgear cabinet
High UV-resistant powder coating for outdoor cubicles
High seismic zone (8-level) reinforced frames
How to Choose the Right Switchgear Cabinet
Use this 4-step selection framework to determine which switchgear cabinet family fits your project.
Step 1 - Identify the Voltage Class
For 10–12 kV incoming / feeder, choose KYN28-12 or HXGN15-12 RMU. For 20–35 kV, choose KYN61-40.5 or XGN-24. For 380 / 660 V downstream of the transformer, choose MNS / GGD / GCK / XL-21.
Step 2 - Match the Installation Environment
Indoor controlled environment → IP4X is enough. Outdoor / coastal / dusty → IP54 with anti-condensation heater, SS304 enclosure option, and UV-resistant paint.
Step 3 - Calculate Short-Circuit Duty
Confirm the short-circuit capacity at the point of installation (typically 25 / 31.5 / 40 kA). The switchgear cabinet breaking & short-time withstand ratings must be ≥ this value.
Step 4 - Define the Single Line Diagram
Number of feeders, CT ratios, protection relay model (overcurrent / distance / differential), metering, communication protocol (Modbus / IEC 61850). Send us your SLD → we will return a customized switchgear cabinet BOM and price list within 24 hours.
Installation & Maintenance of a Switchgear Cabinet
Industry experience shows that poor installation can increase operating costs by up to 30%, and roughly 50% of equipment failures can be traced back to inadequate maintenance. A switchgear cabinet is a long-life asset (20+ years) - how it is installed and serviced decides whether it reaches that life or fails early.
Recommended Inspection & Service Intervals
| Task |
LV Switchgear Cabinet |
MV / HV Switchgear Cabinet |
Outdoor / Coastal Units |
| Visual & thermal inspection (IR scan) |
Quarterly |
Quarterly |
Monthly + after every storm |
| Mechanical operation check (breaker / LBS racking) |
Quarterly |
Every 6 months |
Every 6 months |
| Protection relay & secondary wiring test |
Every 6 months |
Every 6 months |
Every 6 months |
| Primary / secondary injection test |
Yearly |
Yearly |
Yearly |
| Busbar torque & contact resistance check |
Yearly |
Yearly |
Every 6 months |
| Insulation resistance test (Megger) |
Yearly |
Yearly |
Every 6 months |
| SF6 / gas pressure check (GIS & RMU) |
- |
Every 6 months |
Every 6 months |
| Heater, fan & anti-condensation check |
Yearly |
Yearly |
Every 6 months |
Before Installation - Key Checks
- Verify the incoming voltage, phase sequence and short-circuit capacity at the point of connection
- Confirm the floor loading, clearances and cable entry direction (top / bottom) against the approved drawing
- Inspect enclosure for transit damage and check IP degree of the final installation location
- Store the switchgear cabinet in a dry, ventilated room (humidity < 80%) until energization
- Use qualified electricians only - commissioning by untrained personnel voids the warranty
- Keep the single line diagram, test reports and component manual on site
During Service - Routine Checklist
- Listen for abnormal noise (buzzing, arcing) and check temperature rise by touch / IR camera
- Verify indicator lamps, meters and relay LCDs read normally
- Check door seals, locks and the five-prevention interlock function
- Vacuum dust from busbar and cable compartments (compressed air, dry)
- Re-torque busbar connections and check for discoloration of terminals
- Document every inspection - trend data predicts failures before they happen
Smart-maintenance option: add IoT monitoring (temperature, humidity, partial discharge, breaker operation count) to your switchgear cabinet, and our cloud platform sends alarms before faults develop - cutting on-site inspections and unplanned downtime.
Manufacturing and Customization - Your Switchgear Cabinet, Your Way
Because GNEE is a manufacturing plant (not a trading company), every switchgear cabinet can be customized in enclosure material, surface finish, component brand and protection scheme. Standard configurations ship fast; customized designs are engineered from your SLD.
Enclosure & Finish Options
| Option |
Standard |
Upgrade Options |
| Enclosure material |
Cold-rolled steel 1.5 – 2.0 mm, galvanized |
Stainless steel SS304 / SS316 for coastal, food, chemical and offshore environments |
| Surface finish |
Epoxy powder coating, RAL 7035 light gray |
Any RAL color, high-UV outdoor grade, anti-corrosion two-coat system |
| Door configuration |
Single front door |
Double door, sectional design, window door, padlockable cam locks |
| Cable entry |
Bottom (standard) |
Top entry, mixed, gland plates with IP-rated grommets |
| Protection degree |
IP30 – IP54 |
IP65 / IP66 with gasketed doors and filtered ventilation |
| Mounting |
Floor-standing |
Wall-mounted, pole-mounted, mobile skid / containerized |
Component Brand Compatibility
We integrate breakers, relays, meters and SPDs from the brands your project specifies - or we offer our proven standard components:
| Component |
Standard Brand |
Optional Brands |
| LV breaker (MCCB / ACB) |
CHINT / Delixi |
ABB, Schneider Electric, Siemens, Mitsubishi |
| MV vacuum circuit breaker |
GNEE (VS1 / VSm series) |
ABB VD4, Schneider EV12, Siemens 3AH |
| Protection relay |
Jingji / GNEE digital relay |
SEL, ABB REF, Schneider Easergy, Siemens SIPROTEC |
| Metering |
CHNT / Acrel |
Schneider PM, ABB, Siemens |
| SPD |
CHNT / Delixi |
DEHN, OBO Bettermann, Phoenix Contact |
Standard Delivery Speed
- Engineering drawings: 3 working days after SLD confirmation
- LV MNS / GGD / XL-21 cabinets: 10 – 15 working days
- KYN28-12 panels: 15 – 20 working days
- KYN61-40.5 / custom RMU: 25 – 30 working days
- Sample / prototype unit: within 7 days for approved designs
What We Need From You for a Quotation
- Single line diagram (SLD) - even a hand sketch works
- Rated voltage, rated current and short-circuit capacity
- Number of feeders and their loads / CT ratios
- Protection relay preference and communication protocol
- Installation environment (indoor / outdoor, altitude, humidity)
- Quantity, destination port and target standard (IEC / GB / other)
Why Choose Us?
Factory-Direct Pricing
No middlemen. We fabricate the busbar, weld the enclosure, integrate the breaker, and run FAT - all under one roof.
Customization to Your SLD
Send us your single line diagram and we will engineer the switchgear cabinet around it - not the other way around. From 630A feeder panels to complete 35kV receiving substations.
IEC / GB Standard Compliance
Every switchgear cabinet is type-tested to IEC 62271-200 / IEC 61439 and corresponding GB standards. Reports are available on request before order.
Copper Busbar as Standard
No aluminum or downsizing tricks. 2.0 mm cold-rolled steel enclosure, copper busbar, branded breakers (ABB / Schneider / CHINT optional), and stainless hinges & locks.
Third-Party Inspection Welcome
SGS / BV / TÜV / Intertek pre-shipment inspection supported. We provide full FAT documentation, type test reports, and remote video inspection if you cannot visit in person.
Seaworthy Packing & Global Logistics
Export-standard plywood cases with reinforced brackets, vacuum-packed for sea freight. Door-to-door delivery via 30+ established freight forwarders.
Need a Switchgear Cabinet Price List Today?
Send us your single line diagram (SLD), required quantity, and destination port. Our sales engineer will reply with a complete quotation within 24 hours - including FAT plan, packing list, and sea freight estimate.
Email Our Switchgear Cabinet Team
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FAQs
1. What is the difference between KYN28 and KYN61 switchgear cabinets?
KYN28-12 is rated 12 kV (extending to 24 kV) and is the most common indoor switchgear cabinet for 10–12 kV substations. KYN61-40.5 is rated 40.5 kV and is used in 35 kV receiving substations and high-voltage industrial networks. KYN28A is also the same series as KYN28.
2. What is a ring main unit (RMU) and when do I use it instead of a switchgear cabinet?
A ring main unit (RMU) is a compact, fully metal-enclosed switchgear cabinet integrating load-break switches, fuses, and (optionally) a vacuum circuit breaker in one cubicle. It is used in 12–24 kV secondary distribution cable networks where space is limited. For primary substations, choose a full KYN28 / KYN61 switchgear cabinet instead.
3. Can you customize the switchgear cabinet to my single line diagram?
Yes. Send us your SLD (single line diagram) and protection philosophy. Our engineers will produce a customized switchgear cabinet BOM with breaker selection, CT/VT ratios, relay model, busbar sizing, and enclosure dimensions within 24 hours.
4. What standards does your switchgear cabinet comply with?
Our HV switchgear cabinets comply with IEC 62271-200, IEC 62271-1, IEC 62271-100, IEC 62271-102, and GB 3906. LV switchgear cabinets comply with IEC 61439 and GB 7251. Type test reports are issued by CNAS / CMA accredited labs and are available on request.
5. What is the typical lead time for a switchgear cabinet order?
Standard 12 kV KYN28 panels: 15–20 working days. Custom KYN61-40.5 cabinets: 25–30 working days. RMU 12 / 24 kV: 15–25 working days. LV MNS / GGD: 10–15 working days. Sea freight adds another 20–35 days depending on destination port.
6. Do you provide type test reports and FAT documentation?
Yes. Every switchgear cabinet ships with a routine test report. Type test reports (dielectric, temperature-rise, short-circuit withstand, mechanical endurance) are available from our previous type-tested design. FAT videos and photos can be shared before delivery.
7. Can I use your switchgear cabinet for solar / photovoltaic projects?
Yes. We provide a complete solar switchgear cabinet solution: PV DC combiner box + PV AC grid connection cabinet + HV / LV switchgear cabinet for the inverter output and step-up transformer interface. See our distribution box family for combiner boxes.
8. How do you ensure switchgear cabinet quality before shipment?
Every switchgear cabinet undergoes a documented Factory Acceptance Test (FAT) including: visual & dimensional check, mechanical operation, electrical interlock verification, primary & secondary injection test, insulation test, and (for RMU) gas leakage check. FAT video is recorded and shared with the buyer.
9. Do you offer installation and commissioning support?
For projects over USD 50,000, we dispatch an engineer to your site for installation guidance, commissioning, and operator training. For smaller orders, we provide detailed installation manuals, video guides, and 24/7 remote technical support via WeChat / WhatsApp / email.
10. How do I request a switchgear cabinet quotation?
Send us your single line diagram (SLD), main technical specifications, quantity, and destination port. Our sales engineer will reply with a complete switchgear cabinet quotation - including unit price, lead time, packing, sea freight estimate, and payment terms - within 24 hours.
11. What are the main components inside a switchgear cabinet?
A complete switchgear cabinet contains three groups:
(1) main power components - circuit breaker (VCB / MCCB / ACB), disconnector / isolator, copper busbar, current & voltage transformers, auxiliary transformer;
(2) protection & control devices - protection relay, contactor, interlocking system, meters & indicators, surge protection device (SPD), fuse switch disconnector;
(3) structural components - enclosure, insulators & busbar supports, ventilation & cooling, cable terminals, earthing system. See the Key Components section above for the full table with typical specifications.
12. What is the difference between a circuit breaker and a disconnector (isolator) in the cabinet?
A circuit breaker automatically interrupts current on overload or short circuit and can also be operated manually - it protects the circuit under load. A disconnector (isolator) only creates a visible, safe break for maintenance and cannot interrupt load current; it must be operated only after the breaker has opened. Both are interlocked in our cabinets so they can never be operated in the wrong order.
13. What is the difference between a switchgear cabinet and a distribution cabinet?
The switchgear cabinet sits at the system level - it receives power from the transformer / incoming feeder, distributes it to circuits, and protects the network (12 – 40.5 kV HV or 380 – 660 V LV). It is large and installed in substations / switchgear rooms. The distribution cabinet (box) is the final equipment: it takes power from the upper level and feeds the nearest loads with zone protection. It is smaller, often wall-mounted. GNEE supplies both, engineered to match each other - see the terminology table above.
14. How often should a switchgear cabinet be inspected and maintained?
As a guide: LV switchgear cabinets - visual and thermal inspection quarterly; MV / HV cabinets - every 6 months for mechanical operation and relay checks, yearly for injection and insulation tests; outdoor / coastal units - monthly visual checks plus checks after every storm. A full maintenance schedule table is in the Installation & Maintenance section above.
15. Can the components of my switchgear cabinet be upgraded or replaced later?
Yes. Our switchgear cabinets use modular, standardized cubicles: the vacuum circuit breaker is on a withdrawable truck (KYN / MNS series), so it can be swapped without disturbing the busbar; relays, meters, SPDs and CTs are plug-in and can be upgraded to smart versions with Modbus / IEC 61850 communication at any time. We also provide retrofit upgrade solutions for existing cabinets from other brands.
16. Which enclosure materials and IP ratings are available?
Standard enclosure is 1.5 – 2.0 mm cold-rolled galvanized steel with epoxy powder coating, RAL 7035, IP30 – IP54. Upgrade options include stainless steel SS304 / SS316 for coastal, food, chemical and offshore use; IP65 / IP66 gasketed outdoor enclosures; high-UV outdoor-grade paint; and anti-condensation heaters for humid climates. Full details are in the Manufacturing & Customization section.
17. Why is a surge protection device (SPD) important in a switchgear cabinet?
Lightning and switching surges are the leading cause of damage to relays, meters, communication cards and other sensitive electronics inside the cabinet. An SPD diverts the surge to earth in microseconds before it reaches these devices. For smart-grid, solar and data-center projects we fit Type 1 + Type 2 SPDs at the incoming position as standard - this is cheap insurance compared with a failed protection relay or a plant trip.
