GCS Low-Voltage Switch Cabinet
The GCS low-voltage switch cabinet is built by LYE Technology on a 20 mm module C-section frame with an effective height of 1760 mm, for three-phase systems at 400 V or 690 V up to 6300 A. Five drawer sizes from 8E/2 to 24E let the cubicle be filled evenly where the outgoing load is mostly medium sized.
- Rated working voltage: 400 V (690 V) and below
- Rated current: Up to 6300 A
- Frame modulus: E = 20 mm C-section, effective height 1760 mm
- Drawer sizes: 8E/2, 8E, 12E, 16E, 24E
- Circuits per drawer: 8E/2 up to 22, 8E up to 11
GCS Low-Voltage Switch Cabinet: Key Features & Typical Use
A 20 mm Module Step for Tight Layouts
The GCS frame uses a 20 mm module (E = 20 mm) with an effective height of 1760 mm, which gives a finer vertical step than a 25 mm system. That matters where the outgoing load is mostly medium-sized and you want to fill the cubicle evenly rather than leaving half a module of dead space at the top of every section.Five Drawer Sizes Covering Most Feeder Duties
Drawers are available in 8E/2 (160 mm x 2), 8E (160 mm), 12E (240 mm), 16E (320 mm) and 24E (480 mm). A cubicle can hold up to 22 circuits in 8E/2 drawers or up to 11 in 8E drawers, and every size provides connected, test and disconnected positions with reliable mechanical interlocking for safe isolation.Adapter Units and Two Propulsion Mechanisms
The 8E/2 adapter uses an FZID metal split adapter unit, and the 8E/2 and 8E drawers use a hand-pull propulsion mechanism while the 12E, 16E and 24E drawers use a hand-cranked mechanism sized for heavier breakers. The split means operators get a light pull action on small outgoing circuits and positive cranked engagement on the large ones.Cold-Rolled Steel Shell, Aluminium-Zinc Structure
The cabinet body is cold-rolled steel finished with light grey epoxy powder electrostatic coating; the frame is C-section steel and the support beams are aluminium-zinc coated plate, bolted and welded into a rigid assembly. The whole cabinet forms a continuous electrical path for protective earthing, and the coated finish keeps internal metal parts corrosion-resistant in industrial air.GCS Low-Voltage Switch Cabinet Specifications & Technical Data
| Parameter | Details |
|---|---|
| Product | GCS 0.4 kV low-voltage switch cabinet |
| Cabinet height | 2200 (+/-20%) mm |
| Cabinet width | 1000 mm to 600 mm |
| Cabinet depth | 1000 mm to 600 mm |
| Material type | Metal type |
| Structure type | Assembled, withdrawable |
| Place of use | Indoor |
| Enclosure protection degree | IP41, IP40 |
| External mechanical impact protection | IK10 |
| Maximum load | Incoming cubicle 1500 kg, control cubicle 1500 kg |
| Heat dissipation capacity | Incoming cubicle 2480 W, control cubicle 1510 W |
| Main frame | C-section steel, modulus E = 20 mm, effective height 1760 mm |
| Drawer specifications | 8E/2 (160 mm x 2), 8E (160 mm), 12E (240 mm), 16E (320 mm), 24E (480 mm) |
| Circuits per drawer size | 8E/2 up to 22; 8E up to 11 |
| Adapter unit | FZID metal split adapter unit for 8E/2 |
| Rated working voltage | 400 V (690 V) and below |
| Rated current | 6300 A and below |
| Rated frequency | 50–60 Hz, three-phase AC |
GCS — a Low-Voltage Switch Cabinet with a Finer Modular Step
Not every switchroom is loaded with 6300 A feeders. Where the outgoing circuits are mostly medium-sized motor starters and distribution ways, a 20 mm module system fills the cubicle better than a coarser one. The GCS uses an 1760 mm effective frame height in 20 mm steps, so the layout stops wasting vertical space.Tender documents describe this equipment as GCS type low-voltage switchgear, a drawer-type LV distribution cabinet or a 20 mm modular switchboard, and it is often compared directly with 25 mm systems. The practical question when choosing between them is how the outgoing circuit sizes are distributed: a finer modular step fills a cubicle better when the load list is mostly medium sized, and it is worth asking a manufacturer to show both layouts before deciding.Five drawer sizes — 8E/2, 8E, 12E, 16E and 24E — cover the range, with up to 22 circuits in a cubicle of 8E/2 drawers. Small drawers use a hand-pull propulsion mechanism and the 12E and larger sizes use a cranked mechanism, so the operating effort matches the breaker size rather than the cabinet size.The GCS is specified for power distribution and centralised motor control in power plants, petroleum and chemical plants, hospitals, railways, highways, airports and mining sites. LYE manufactures the shell, frame and support structure in-house, which means the cubicle layout can be re-cut for your drawer schedule without changing the enclosure family.Factory-Direct GCS Low-Voltage Switch Cabinet Manufacturer & OEM / ODM
We Manufacture, You Brand
LYE Technology (Zhejiang) Co., Ltd. is a national high-tech enterprise and manufacturer in Wenzhou, China: sheet-metal fabrication, welding, powder coating, busbar machining and final assembly run on our own factory lines, and every unit is function-tested before it leaves the works. A GCS Low-Voltage Switch Cabinet that reaches your site carries the routine test behind it, not just the rating on the nameplate.We are one of the Top 10 Brands of China's small power distribution boxes and a drafter of national standards in this category, and we hold ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification. Because we are the manufacturer rather than a trading company, our sales engineers quote from your drawing in factory-direct terms, and OEM or ODM work is produced on the same lines as our standard products.For the GCS we machine the 20 mm module frame ourselves, so a drawer schedule that mixes 8E/2 and 24E units in one cubicle is routine work for us.- OEM branding — custom colours, laser marking and your own project or retail packaging, applied at the factory.
- ODM options — ratings, configurations and internal layouts built around your drawings or single-line diagram.
- Certification — ISO9001, ISO14001, ISO45001, CCC, CE and TUV, with test documents supplied per project.
- MOQ — flexible quantities for a project or a trial order, with mixed types welcome in one shipment.
GCS cubicle with 8E/2 drawers in connected position
C-section frame and aluminium-zinc support beams before cladding
GCS Low-Voltage Switch Cabinet Buying Guide from the Manufacturer
Choosing between a 20 mm and a 25 mm modular system is the first decision on any switchboard. These are the points we confirm before drawing release on a GCS.
- Confirm the system voltage, frequency and rated current, up to 400 V (690 V) and 6300 A.
- Group the outgoing circuits by breaker size to choose between 8E/2, 8E, 12E, 16E and 24E drawers.
- Set the cubicle arrangement including incoming, bus-tie, motor control and compensation sections.
- Confirm the enclosure protection degree and the expected heat dissipation per cubicle.
- Send the single-line diagram, drawer schedule and site conditions including altitude and ambient temperature.
- Approve drawings, then production with routine testing on every drawer before dispatch.
Manufacturer & Sales Support for Wholesale Buyers
OEM / ODM
Learn more →Factory colours · Logo marking · Custom layout
Wholesale
Learn more →Factory pricing · Flexible MOQ · Global shipping
Distributor Support
Learn more →Account manager · Drawing support · Priority lead times
Need a GCS Switchboard Configured to Your Drawer Schedule?
OEM/ODM, wholesale pricing and distributor support straight from the manufacturer — one enquiry gets you a factory-direct quotation for the GCS Low-Voltage Switch Cabinet, sized to your drawer schedule, single-line diagram and the cubicle arrangement you expect to build, with type-test documentation under IEC 60439-1 and IEC 60947. Our sales team replies with a specification and an indicative price, so send your drawings and quantity.Contact Our Sales TeamGCS Low-Voltage Switch Cabinet — Frequently Asked Questions
What is a GCS low-voltage switch cabinet?
It is a 0.4 kV low-voltage distribution cabinet for power distribution, centralised motor control and capacitor compensation in three-phase 50–60 Hz systems at 400 V (690 V) and below, with rated currents up to 6300 A. Its distinguishing feature is a 20 mm module frame (E = 20 mm) with an effective height of 1760 mm and five drawer sizes from 8E/2 to 24E.What is the difference between a GCS and an MNS switchboard?
Both are modular withdrawable low-voltage platforms, but they use different module steps. GCS uses a 20 mm module with an 1760 mm effective frame height and drawers from 8E/2 to 24E; MNS uses a 25 mm module with an 1800 mm effective height and eight drawer sizes from 8E/4 to 24E. The finer step suits load lists dominated by medium-sized circuits, the coarser one suits very high circuit counts.What is a GCS switchgear used for?
It is used for power distribution, centralised motor control and capacitor compensation in installations such as power plants, petroleum and chemical works, hospitals, railways, highways, airports, mining operations and large buildings. It is usually chosen where the outgoing circuits are medium sized and the switchroom needs to be filled efficiently rather than dominated by a few heavy feeders.Who are the main low-voltage switchgear manufacturers?
Suppliers fall into international brands and domestic manufacturers who build to the same IEC standards, and the same platform name can hide very different equipment. Ask whether the C-section frame, drawers, propulsion mechanisms and coating are produced in house, which drawer sizes are actually manufactured, and whether routine test records are issued per unit. LYE manufactures the GCS in Wenzhou and holds ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification.How much does a GCS switchboard cost?
Indicative factory-direct pricing is roughly US$1,500 to US$6,000 per cubicle, depending on the drawer mix, busbar rating, cubicle count and order quantity. Because the board is assembled from a drawer schedule rather than a catalogue, the most useful starting point for a quotation is the outgoing circuit list grouped by breaker frame size, which lets the layout and therefore the cost be compared properly between suppliers.
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Use a distribution box for final circuits and compact branch protection; use a cabinet when the project needs larger incoming capacity, more feeder groups, metering, busbars or greater internal separation. The final choice should be checked against the single-line diagram, device list, available installation space and local project rules.
Provide the device schedule, circuit quantity, component dimensions, cable-entry direction, mounting method and required spare capacity. LYE also reviews door clearance, bending radius, heat-producing devices and the usable depth behind the mounting plate before confirming an enclosure size.
Start with the actual exposure to dust, rain, cleaning water and accidental contact rather than choosing the highest number by default. Cable entries, ventilation, door seals and installation workmanship affect the finished assembly, so the target rating and verification basis must be confirmed for the specific product and project.
Coated or galvanized steel is commonly considered for general indoor service, stainless steel for humid or corrosive locations, and engineering plastic for lightweight non-metallic applications. Material grade, thickness, UV exposure, chemical contact and earthing requirements must be confirmed against the installation environment.
Share the component heat load, ambient temperature, solar exposure, duty cycle and allowable internal temperature. LYE can then review enclosure volume, spacing, ventilation or fan provisions, sun shields, heaters or drainage details; the final thermal design remains tied to the installed equipment and site conditions.
Yes. A dimensioned drawing is preferred, but a physical sample and clear reference photographs can also start the review. Material, thickness, openings, hardware, finish, labels, inspection points and packing are recorded before sampling or repeat production.
PDF and common 2D CAD drawings are suitable for most enclosure enquiries, while 3D files can help with complex assemblies. Include a revision number, units, tolerances and component references; file compatibility and any missing production information will be confirmed during review.
A sample or first article can be arranged for a new or customized product. The approval plan should identify dimensions, openings, fit, appearance, hardware, labels and packaging, together with the sample cost and timing agreed for the actual order.
Available documents may include approved drawings, packing lists, dimensional or appearance inspection records, product data and certificates applicable to the confirmed model. Destination-specific declarations or third-party testing must be requested before order placement so availability and scope can be verified.
Lead time is confirmed after the product scope, quantity, sample requirement and finish are known. Packing is reviewed against product weight, surface protection, destination and shipping method; if an issue is found after delivery, send the order reference, label, photographs and quantity affected so it can be traced and reviewed.
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