Custom 380V 660V Low-Voltage Switchgear is a reliable power distribution and control solution for industrial, commercial, infrastructure, and energy projects. Designed for 380V and 660V AC systems, it offers flexible configurations, customized busbars, circuit breakers, protection devices, and IP ratings to meet different project requirements. Suitable for power distribution, motor control, manufacturing plants, mining, renewable energy, and EPC projects.
Custom 380V 660V Low-Voltage Switchgear is a modular low-voltage power distribution and control system designed for AC power distribution, motor control, power conversion and electrical equipment protection.
The switchgear is available for 380V and 660V low-voltage systems and can be customized according to project requirements, including rated current, busbar configuration, feeder arrangement, protection devices, enclosure protection, internal separation and control functions.
The MNS-type configuration is particularly suitable for applications requiring flexible feeder combinations, compact installation and convenient maintenance. Typical systems use modular compartments and withdrawable or fixed functional units. Similar 380/660V MNS systems commonly support 50/60Hz operation and high-current busbar configurations.
The equipment can be engineered according to IEC 61439-1 and IEC 61439-2, with other standards available according to the destination market and project specification. IEC 61439-1 defines general construction, service-condition, technical and verification requirements, while IEC 61439-2 provides specific requirements for power switchgear and controlgear assemblies.
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The Custom 380V 660V Low-Voltage Switchgear can be configured according to the electrical system, load requirements, installation environment, and project specifications. The following parameters are typical reference values; final ratings are confirmed during engineering design.
| Item | Technical Specification |
|---|---|
| Product Type | Low-Voltage Switchgear / Distribution Switchboard |
| Model | MNS / Customized |
| Rated Voltage | 380V / 400V / 415V / 440V / 480V / 660V AC |
| Rated Insulation Voltage | Up to 1000V AC |
| Rated Frequency | 50Hz / 60Hz |
| System Configuration | 3P3W / 3P4W / 3P5W |
| Rated Current | Customized according to load requirements |
| Main Busbar Current | Up to 6300A, customized |
| Vertical Busbar Current | Customized according to feeder configuration |
| Rated Short-Time Withstand Current | Customized according to system short-circuit level |
| Peak Withstand Current | Customized according to project requirements |
| Short-Circuit Protection | ACB / MCCB / MCB / Fuse |
| Incoming Feeder | ACB / MCCB / Switch Disconnector |
| Outgoing Feeders | MCCB / MCB / Fuse / Motor Feeder |
| Structure | Fixed / Withdrawable |
| Functional Units | Fixed / Plug-in / Withdrawable Drawer |
| Internal Separation | Form 2 / Form 3 / Form 4 |
| Enclosure Protection | IP30 / IP40 / IP42 / IP54, optional |
| Enclosure Material | Cold-Rolled Steel / Galvanized Steel |
| Busbar Material | Copper / Aluminum |
| Main Busbar | Horizontal Copper/Aluminum Busbar |
| Distribution Busbar | Vertical Busbar, customized |
| Neutral Busbar | N Busbar, optional |
| Earth Busbar | PE / PEN Busbar |
| Cable Entry | Top / Bottom |
| Installation | Indoor / Outdoor |
| Cooling Method | Natural Ventilation / Forced Ventilation, optional |
| Metering | Ammeter / Voltmeter / Multifunction Power Meter |
| Protection Functions | Overload / Short Circuit / Earth Fault / Overvoltage / Undervoltage |
| Motor Control | DOL / Star-Delta / Soft Starter / VFD, optional |
| Power Factor Compensation | Capacitor Bank, optional |
| ATS Function | Optional |
| Surge Protection | SPD, optional |
| Communication | RS485 / Modbus RTU / Other protocols, optional |
| Control System | Manual / Automatic / PLC Control |
| Monitoring | Local / Remote Monitoring, optional |
| Operating Environment | Customized according to project conditions |
| Ambient Temperature | Typically -5°C to +40°C, subject to design requirements |
| Installation Altitude | Standard configuration subject to applicable requirements; high-altitude customization available |
| Relative Humidity | Suitable for normal industrial environments; customized for high-humidity applications |
| Corrosion Protection | Standard / Enhanced coating system, optional |
| Color | RAL color or customized |
| Applicable Standard | IEC 61439-1 / IEC 61439-2 |
| Testing | Routine Verification and Functional Testing |
| Customization | Electrical configuration, dimensions, components and protection functions can be customized |
Incoming Section
Busbar Section
Outgoing Section
For a typical 380V/660V industrial power distribution system, the switchgear can be configured as:
Incoming ACB → Main Busbar → Bus Coupler → Outgoing MCCB/MCB Feeders → Motors / Transformers / Production Equipment
The final rated current, short-circuit withstand level, busbar size, breaker specifications and cabinet dimensions should be determined from the Single Line Diagram (SLD), load list and project short-circuit calculation, rather than from the 380V/660V system voltage alone. IEC 61439-1/-2 specifies the relevant requirements and verification framework for low-voltage assemblies.
The Custom 380V 660V Low-Voltage Switchgear is designed for reliable power distribution, circuit protection, motor control, and electrical monitoring in a wide range of industrial, commercial, infrastructure, and energy applications. The system can be customized according to the project voltage, load capacity, feeder configuration, protection requirements, and installation environment.
Low-voltage switchgear is widely used as the main distribution and control system for industrial facilities.
Typical applications include:
The switchgear can distribute power to multiple production areas while providing circuit protection and centralized control.
Mining and heavy industrial facilities require reliable power distribution for high-capacity equipment and continuous operation.
Typical applications include:
Customized motor feeders, high-current busbars, and protection systems can be configured according to the project requirements.
The switchgear is suitable for power distribution and motor control in water supply and wastewater treatment facilities.
Typical loads include:
Motor control units can be configured with DOL starters, star-delta starters, soft starters, or VFDs.
The switchgear can be used for low-voltage power distribution in various power generation facilities.
Applications include:
Typical functions include auxiliary power distribution, generator-related distribution, motor control, and emergency power systems.
For renewable energy projects, customized low-voltage switchgear can support AC power distribution and auxiliary electrical systems.
Typical applications include:
The configuration can be designed according to the project’s inverter capacity, transformer rating, feeder quantity, and protection requirements.
The switchgear can be integrated into Battery Energy Storage System (BESS) projects for auxiliary and low-voltage AC distribution.
Typical applications include:
Communication and monitoring functions can be added for integration with the project’s energy management system.
The equipment can be customized for power distribution and motor control in oil and gas facilities.
Typical applications include:
For demanding environments, the switchgear can be configured with enhanced corrosion protection, environmental protection, and project-specific electrical components.
The switchgear provides centralized low-voltage power distribution for large commercial and public buildings.
Typical applications include:
It can supply power to lighting, HVAC, elevators, pumps, fire protection systems, and other building services.
For data centers, low-voltage switchgear can support the distribution of critical and auxiliary electrical loads.
Typical applications include:
The system can be customized with dual incomers, bus couplers, automatic transfer functions, metering, monitoring, and communication interfaces according to redundancy and reliability requirements.
The switchgear is suitable for a wide range of infrastructure and public utility projects.
Typical applications include:
The cabinet configuration can be customized according to the power distribution system and site installation conditions.
Heavy industrial applications often require high-current power distribution and centralized motor control.
Typical equipment includes:
High-capacity busbars, withdrawable feeders, and advanced motor protection can be selected according to the load characteristics.
The switchgear can form part of an integrated power distribution system for:
Customized protection, automatic transfer, power monitoring, and communication functions can be integrated according to the overall system design.
Custom 380V 660V Low-Voltage Switchgear is an electrical distribution and control system designed for 380V and 660V AC power systems. It integrates circuit breakers, busbars, protection devices, metering, control components, and optional communication systems for power distribution, motor control, and electrical protection.
Yes. The switchgear can be customized according to your project requirements, including:
Rated voltage and frequency
Rated current
Short-circuit level
Incoming and outgoing feeders
Busbar configuration
Circuit breaker type
IP protection rating
Cabinet dimensions
Motor control functions
Metering and monitoring
Communication protocols
Installation environment
The standard system is designed for 380V and 660V AC. Other low-voltage ratings, such as 400V, 415V, 440V, 480V, and 525V, can also be customized.
Both 50Hz and 60Hz systems are available.
Depending on the electrical design, the switchgear can be equipped with:
ACB (Air Circuit Breaker)
MCCB (Molded Case Circuit Breaker)
MCB (Miniature Circuit Breaker)
Fuse-based protection devices
Motor protection breakers
The final selection depends on the rated current, breaking capacity, and protection requirements.
Yes. Both configurations are available.
Fixed type is suitable for standard and economical power distribution applications.
Withdrawable type is suitable for projects requiring easier maintenance, flexible operation, and convenient replacement of functional units.
The rated current and busbar capacity can be customized according to the project requirements. Typical main busbar ratings can range from lower current systems up to 6300A, depending on the switchgear design and selected components.
Typical protection options include:
IP30
IP40
IP42
IP54
The required protection level should be selected according to the installation environment, ventilation requirements, dust, humidity, and other site conditions.
Yes. Motor control units can be integrated for applications such as:
Pumps
Fans
Compressors
Conveyors
Production machinery
Available starting methods can include DOL, Star-Delta, Soft Starter, and VFD, depending on the motor and project requirements.
Yes. Capacitor banks and automatic power factor correction systems can be integrated into the switchgear or supplied as a separate section.
Yes. An ATS or automatic transfer system can be configured for applications requiring automatic switching between:
Utility and generator
Normal and emergency power
Dual incoming power supplies
Yes. Optional intelligent monitoring and communication features can include:
Multifunction power meters
Energy meters
Current and voltage monitoring
Breaker status monitoring
Temperature monitoring
RS485
Modbus RTU
Ethernet
SCADA or PLC integration
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