Explore our 12kV–40.5kV medium voltage switchgear range — GIS, RMU, and metal-clad panels for power distribution, smart grids, renewables & industrial use. IEC-certified. Request a quote today.
| Rated voltage | 12kV / 24kV / 40.5kV |
|---|---|
| Rated capacity | up to 2500A |
| Application scenarios | Reliable Medium Voltage Switchgear for Every Power Distribution Challenge |
Our medium voltage switchgear (MV switchgear) is engineered for safe, efficient, and intelligent power distribution across voltage levels from 12kV to 40.5kV. Designed for demanding industrial environments and modern smart grid applications, our solutions include gas-insulated switchgear (GIS), ring main units (RMU), metal-clad switchgear, and SF6-free eco-friendly systems.
Whether you are building a new substation, upgrading an aging network, or integrating renewable energy sources, our MV switchgear delivers high reliability, flexible configuration, and long-term operational stability.
Our GIS switchgear is designed for compact substations and harsh environments. Using SF6 or eco-friendly gas insulation, it ensures excellent dielectric strength and minimal footprint.
Rated voltage: 12kV / 24kV / 40.5kV
Rated current: up to 2500A
Short-circuit breaking capacity: up to 31.5kA
Protection level: IP65 fully enclosed structure
Service life: ≥25 years
Standards: IEC 62271-200 / IEC 62271-100
Applications include urban substations, underground networks, offshore platforms, and coastal installations.
The RMU switchgear is designed for loop distribution networks, providing safe switching, fault isolation, and compact installation.
Rated voltage: 12kV / 24kV
Configurations: 2F+1T, 3F+1T, customized
Mechanical life: ≥2000 operations
Arc fault containment design
Optional SCADA/DTU communication integration
Ideal for urban cable systems, industrial parks, EV charging stations, and commercial distribution networks.
The KYN series metal-clad switchgear features a withdrawable vacuum circuit breaker design with advanced interlocking protection for maximum operational safety.
Rated voltage: 12kV / 40.5kV
Busbar current: up to 4000A
Short-circuit withstand: 31.5kA / 3s
Draw-out VCB with service/test/isolation positions
Optional relays: Siemens, ABB, SEL compatible
Modular expandable design
Used in industrial plants, utility substations, data centers, wind farms, and solar power stations.
Our SF6-free switchgear uses clean air or solid insulation technology to eliminate greenhouse gas emissions while maintaining high electrical performance.
Insulation medium: clean air / dry air / epoxy solid insulation
Global Warming Potential (GWP): 0
Fully IEC compliant design
Direct replacement for SF6 RMU systems
Suitable for green energy projects, ESG-compliant utilities, and environmentally sensitive installations.
Rated voltage: 12kV / 24kV / 40.5kV
Frequency: 50Hz / 60Hz
Rated current: 630A–4000A
Short-circuit breaking capacity: up to 31.5kA
Protection class: IP4X indoor / IP65 outdoor
Insulation level: 42kV / 75kV impulse
Operating temperature: -40°C to +55°C
Service life: ≥30 years
Standards: IEC 62271-200, IEC 62271-100, GB 3906
Smart Grid Ready: IEC 61850 communication support for SCADA and digital substations.
Arc Flash Protection: Internal arc tested design compliant with IEC standards.
High Safety Interlocking: Mechanical and electrical interlocking system prevents misoperation.
Modular Design: Flexible expansion without system shutdown.
Low Maintenance: Vacuum interruption and sealed insulation reduce lifecycle costs.
Strong Environmental Adaptability: Operation from -40°C to +55°C with anti-corrosion protection.
Power Utilities: Distribution substations, ring networks, automated switching systems.
Renewable Energy: Wind turbine substations, solar PV power plants.
Industrial Systems: Manufacturing plants, motor control systems, cogeneration facilities.
Data Centers: Redundant power supply systems with high reliability requirements.
Rail Transit: Metro and railway traction power distribution.
Commercial Buildings: Airports, hospitals, shopping centers, and large complexes.
IEC 62271-200 – Metal-enclosed switchgear
IEC 62271-100 – Circuit breakers
IEC 62271-102 – Disconnectors and earthing switches
GB/T 3906 – Chinese MV switchgear standard
ANSI/IEEE C37.20.2 – Optional compliance
CE certification for European market
Type tested by KEMA / CESI laboratories
With over 20 years of manufacturing experience, we provide fully tested MV switchgear solutions for global markets. Our production system follows ISO 9001 quality standards with advanced testing facilities for electrical, thermal, and arc-fault performance validation.
We have delivered switchgear systems to over 50 countries, supporting utilities, industrial plants, and renewable energy projects worldwide. Our engineering team provides full technical support including system design, protection coordination, and customization services.
Metal-clad switchgear provides fully compartmentalized protection with draw-out circuit breakers, offering higher safety compared to metal-enclosed systems.
Our switchgear supports third-party protection relays including Siemens, ABB, Schneider, and SEL.
SF6-free RMU and GIS alternatives are available with clean air or solid insulation systems.
Supported protocols include IEC 61850, Modbus, DNP3, and IEC 60870-5-104.
Standard delivery time is 8–12 weeks depending on configuration.
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ZTELEC Yuguang Electric Technology, founded in 2014, builds on state-owned industrial expertise to deliver reliable power solutions worldwide.
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