Indoor power distribution is the focus of the GGD Low Voltage Power Distribution Panel, built for 50Hz rated frequency and rated working voltage up to 380/400V. Cabinet structure, copper busbars, control circuits and protection components can all be configured to suit project requirements. Power plants, substations, factories, mining enterprises, commercial buildings and other electrical distribution facilities are among the applications it serves.
Our GGD Low Voltage Power Distribution Panel at Usune works as a centralized low-voltage distribution unit: it takes power from the upstream system and feeds multiple outgoing circuits serving equipment, lighting, motors, and other loads. Depending on the electrical single-line diagram, the cabinet can serve as an incoming cabinet, outgoing distribution cabinet, capacitor compensation cabinet, or another configuration—making integration into various industrial and commercial distribution networks straightforward.
Internal layout keeps major electrical components and control wiring separated per the project design. Universal circuit breakers, molded case circuit breakers, miniature circuit breakers, contactors, relays, meters, and other components can be chosen to match each circuit's function. Where customized component brands or specifications are required, we at Usune coordinate component selection with the buyer before production.
Cabinet Frame — Cold-rolled steel plate forms the frame and partitions, with a reference thickness of ≥2mm and finished edges treated to reduce sharp edges during operation and maintenance. The structure delivers sufficient mechanical strength for normal operation while permitting access for inspection, wiring, and component replacement; front and rear doors are arranged for practical operation and maintenance.
Copper Busbars — Electrolytic copper is used for main and branch busbars, with insulation and heat-shrinkable protective materials applied to maintain required dielectric performance. Phase identification is provided, busbar joints are processed per the required electrical connection method, and a flexible busbar connection can be supplied where needed between the incoming bus bridge and the main circuit breaker.
Grounding System — A dedicated PE copper bus runs along the cabinet assembly direction. Components requiring grounding connect through the PE system, with grounding terminals provided for connection to the external grounding network. The cable compartment can also reserve sufficient space for cable heads and related current transformer installation per the project drawing.
Incoming Circuits — Incoming cabinets can be fitted with universal circuit breakers and corresponding protection functions, including electric-operation circuit breakers with undervoltage trip protection and time-delay functions per the electrical design. Protection and control configuration follows project requirements rather than one fixed component combination.
Outgoing Circuits — Outgoing circuits can be arranged for different loads and distribution requirements, with circuit breakers, contactors, thermal relays, and terminal blocks selected according to each feeder's rated current and control requirements. The layout supports clear circuit identification, with device numbers and wiring labels positioned for easier inspection and maintenance.
Motor Control — For motor applications, the cabinet can integrate motor control circuits with appropriate switching and protection components. Start/stop indication lights and circuit identification on the cabinet panel help operators quickly identify individual motor circuits.
Secondary Circuits — Secondary control circuits are wired per approved electrical drawings, with flexible conductors arranged in organized bundles and appropriate insulation and sleeves used where wiring passes through movable or mechanically exposed areas. Reference cross-sections include 1.5 mm² for control and AC voltage circuits and 2.5 mm² for AC current circuits, subject to the final electrical design.
Terminal Identification — Terminal blocks use flame-retardant components, and conductors are identified according to the circuit numbering or conductor direction shown on the drawings. Hand-written internal labels are avoided; circuit numbers and equipment identification are printed or hot-stamped for clearer long-term maintenance.
Our GGD Low Voltage Power Distribution Panel thus combines a distribution-focused structure with flexible circuit configuration to suit varied project needs.
The GGD Low Voltage Power Distribution Panel is designed around the following reference parameters:
| Item | Specification |
| Product Type | GGD Low Voltage Power Distribution Panel |
| Rated Voltage | 0.4kV |
| Rated Frequency | 50Hz |
| Rated Current | Up to 3150A |
| Protection Degree | IP23 |
| Installation | Indoor |
| Pollution Level | Level 3 |
| Altitude | ≤1000m |
| Ambient Temperature | -10°C to +40°C |
| Daily Average Relative Humidity | ≤95% |
| Monthly Average Relative Humidity | ≤90% |
| Seismic Intensity | Up to magnitude 8 |
Final electrical parameters, cabinet dimensions and component selection are determined according to the approved technical drawing and project requirements.
| Model | Rated voltage (V) | Rated current (A) | Rated short-circuit breaking current (KA) | Rated short-time withstand current(1s) (kA) | Rated peak withstand current (kA) | |
| GGD1 | 380 | A | 1000 | 15 | 15 | 30 |
| B | 600(630) | |||||
| C | 400 | |||||
| GGD2 | 380 | A | 1500(1600) | 30 | 30 | 63 |
| B | 1000 | |||||
| C | 600 | |||||
| GGD3 | 380 | A | 3150 | 50 | 50 | 105 |
| B | 2500 | |||||
| C | 2000 | |||||
| Product code | A | B | C | D |
| GGD06 | 600 | 600 | 450 | 556 |
| GGD06A | 600 | 800 | 450 | 756 |
| GGD08 | 800 | 600 | 650 | 556 |
| GGD08A | 800 | 800 | 650 | 756 |
| GGD10A | 1000 | 600 | 850 | 556 |
| GGD10A | 1000 | 800 | 850 | 756 |
| GGD12 | 1200 | 800 | 1050 | 756 |
In factories, workshops and mining facilities, the GGD Low Voltage Power Distribution Panel can serve as the central distribution point for production equipment, motors, lighting and auxiliary systems.
The cabinet can be configured for commercial and high-rise building distribution networks where multiple outgoing circuits require centralized protection, measurement and control.
Power plants and substations can use the equipment for low-voltage auxiliary power distribution and downstream electrical systems, with the internal configuration adapted to the project's single-line diagram.
Our equipment at Usune is designed for indoor installation, with a reference operating temperature of -10°C to +40°C and an altitude of up to 1000m. The surrounding environment should be free from severe vibration, impact, and corrosive conditions. Where special environmental requirements apply, we can discuss technical conditions with the buyer before production.
During installation, the equipment's inclination to the vertical plane should not exceed 5°. Proper installation helps maintain cabinet alignment, door operation, and electrical connection reliability.
Our GGD Low Voltage Power Distribution Panel at Usune is designed and manufactured in line with applicable low-voltage switchgear requirements, including relevant GB and IEC standards. Equipment we supply can be built to the latest applicable project specifications and approved technical documentation. Key reference standards include GB/T 14048.2, GB 7251.12, IEC 439-1, GB 4942.2, and other applicable electrical standards specified by the project.
ISO 9001, ISO 14001, and ISO 45001 systems support our manufacturing and quality management activities at Usune. Depending on product configuration, electrical products can also be supplied with CE certification and relevant test documentation.
| Comparison Item | GGD Low Voltage Power Distribution Panel | Withdrawable Switchgear | Fixed-Type Distribution Cabinet |
| Main Purpose | Low-voltage power distribution, control and protection | Frequent circuit switching and maintenance | Basic power distribution |
| Typical Voltage | 0.4kV | Low/medium voltage depending on configuration | Low voltage |
| Cabinet Structure | Fixed modular cabinet | Withdrawable drawer/trolley structure | Fixed installation |
| Circuit Access | Front and rear maintenance depending on design | Fast withdrawal of functional units | Conventional maintenance access |
| Configuration Flexibility | High | Very high | Moderate |
| Busbar System | Copper main and branch busbars | Compartmentalized busbar arrangement | Copper or aluminum busbars |
| Suitable Loads | Feeders, motors, lighting, auxiliary systems | Multiple feeders and motor control circuits | General distribution loads |
| Maintenance Approach | Component-level inspection and replacement | Functional unit withdrawal for maintenance | Component-level maintenance |
| Project Customization | Single-line diagram and component-based customization | Drawer configuration customization | Basic configuration customization |
| Typical Applications | Factories, substations, power plants, buildings | Industrial distribution and motor control | Commercial and general-purpose distribution |
The GGD Low Voltage Power Distribution Panel is particularly suitable when the project requires a robust centralized distribution cabinet with a clear internal structure, copper busbar system and flexible selection of incoming, outgoing and control circuits.
For projects where rapid replacement of individual functional units is the primary requirement, a withdrawable configuration may be more appropriate. For simpler distribution networks with fewer circuit changes, a fixed-type cabinet can provide a more straightforward solution.
Usune can select the cabinet structure, circuit breakers, busbar arrangement, control components and internal wiring according to the project's single-line diagram and technical requirements.
The GGD Low Voltage Power Distribution Panel has been referenced for the Cas-space Rocket Launch Project, demonstrating its application in a project environment where structured low-voltage distribution and electrical equipment reliability are important.
The standard reference rated voltage is 0.4kV, with a rated frequency of 50Hz. Final parameters depend on the project design.
The supplied configuration can reach 3150A, subject to the selected circuit breaker, busbar and overall electrical design.
Yes. Cabinet dimensions, electrical components, incoming and outgoing circuits, control functions, busbar arrangements and other details can be customized according to approved drawings.
The configuration can include universal circuit breakers, molded case circuit breakers, miniature circuit breakers, contactors, thermal relays, meters and other components according to the project requirements.
The normal production period is approximately 15–20 days, depending on the quantity and technical configuration.
Yes. Usune can provide OEM and project-based customization, including specified component configurations and customer requirements.
Components and assembled cabinets are inspected during production, followed by routine inspection and testing before shipment. Relevant test documentation can be supplied according to the project requirements.
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No. 298, Wei 17th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou City, Zhejiang Province, China
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