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LV Switchgear | GGD1 AC Low Voltage Fixed-type Distribution Switchgear Cabinet

LV Switchgear | GGD1 AC Low Voltage Fixed-type Distribution Switchgear Cabinet is an indoor AC 380/400 V fixed-type low voltage distribution switchgear designed for power distribution in transformer substations, factories, commercial buildings, residential communities and infrastructure projects. It is the basic-rating cabinet of the GGD series, typically used for lighting and small-power distribution feeders. The cabinet frame is welded from formed steel sections with bolted side and rear panels, the front door carries analog meters, indicator lamps and a selector switch, and the main circuit uses fixed-mounted moulded-case circuit breakers, isolators and fuses. Ventilation louvers on the upper and lower doors provide natural cooling. The GGD series is widely used as the low-voltage side of 10 kV / 0.4 kV substations and matches the KYN28A-12, XGN and HXGN high-voltage switchgear supplied by YAOGU.

Industry Approvals：
GB 7251.1
IEC 61439-1


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Model:
GGD1

Parameter	LV Switchgear
Common Models	GGD1, GGD2, GGD3
Construction	Welded formed-steel frame with bolted side and rear panels; upper instrument door and lower louvered equipment door; top busbar compartment and bottom cable entry. Fixed-mounted main circuit with moulded-case circuit breakers, isolating switches and fuses; basic rating level of the GGD series for lighting and small-power feeders.
Core Function & Performance	Receives 380/400 V power from the distribution transformer and distributes it to downstream feeders; fixed-mounted circuit breakers provide switching, overload and short-circuit protection, while meters and indicator lamps on the front door show the operating status of each circuit.
Technical Specs & Ratings	• Rated Voltage: AC 380 / 400 V (main circuit); 220 V (auxiliary circuit) • Standards: GB 7251.1, IEC 61439-1 • Main components: Moulded-case circuit breakers, isolating switches, fuses, current transformers, analog meters and indicator lamps • Rated busbar current, short-circuit withstand current, circuit scheme and dimensions: configured according to project requirements, please contact us.
Typical Application Scenarios	Low-voltage power distribution in transformer substations, factories and workshops, commercial buildings, hospitals, schools, residential communities, data centers and infrastructure projects, receiving power from the distribution transformer and distributing it to lighting, power and motor feeders.

*Data provided on this page is subject to change based on different manufacturers' variances.

Customization Service

We provide flexible customization services, including circuit scheme and feeder quantity, breaker brand and rating, metering and protection configuration, busbar material and cabinet color. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is GGD1?
A	GGD1 AC Low Voltage Fixed-type Distribution Switchgear Cabinet is an indoor AC 380/400 V fixed-type low voltage distribution switchgear, the basic-rating cabinet of the GGD series, typically used for lighting and small-power distribution feeders. The cabinet frame is welded from formed steel sections with bolted side and rear panels, the front door carries analog meters, indicator lamps and a selector switch, and the main circuit uses fixed-mounted moulded-case circuit breakers, isolators and fuses. Ventilation louvers on the upper and lower doors provide natural cooling.
Q	Which standards does the GGD cabinet comply with?
A	The GGD series is designed and tested to GB 7251.1 (low-voltage switchgear and controlgear assemblies) and the corresponding IEC 61439-1. Component brands and ratings are selected to the project specification.
Q	What is the difference between GGD1, GGD2 and GGD3?
A	The three types share the same cabinet structure and appearance but are rated for increasing busbar current and short-circuit withstand levels. GGD1 is the basic rating for lighting and small-power feeders; GGD2 is the medium rating for general power distribution; GGD3 is the highest rating, normally used as the incoming or main feeder cabinet with an air circuit breaker.
Q	Can it be matched with your high-voltage switchgear?
A	Yes. GGD cabinets are normally installed as the low-voltage side of a 10 kV / 0.4 kV substation together with our KYN28A-12, XGN or HXGN high-voltage switchgear and a distribution transformer. We can supply the complete substation switchgear set.
Q	Which circuit breaker brands can be used?
A	Domestic brands are standard; international brands such as Schneider, ABB or Siemens can be fitted on request. Please specify the preferred brand and rating when requesting a quotation.
Q	Where is this cabinet typically used?
A	Low-voltage power distribution in transformer substations, factories and workshops, commercial buildings, hospitals, schools, residential communities, data centers and infrastructure projects, receiving power from the distribution transformer and distributing it to lighting, power and motor feeders.
Q	What information do you need for a quotation?
A	Please provide the single-line diagram or feeder list, rated busbar current, short-circuit level, preferred breaker brand, metering requirements, cabinet quantity and installation environment. We will confirm the configuration and quote accordingly.
Q	Do you supply complementary products?
A	Yes. In addition to high and low voltage switchgear, we supply power cables, cable accessories, electric power fittings and transformers for complete project packages.