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XL-21 Low Voltage Power Distribution Cabinet

LV Switchgear | XL-21 Low Voltage Power Distribution Cabinet (Indoor Floor-standing)

LV Switchgear | XL-21 Low Voltage Power Distribution Cabinet is an indoor AC 380/400 V low voltage power distribution cabinet designed for power distribution in factories, workshops, commercial buildings, residential communities and infrastructure projects. It is an indoor floor-standing low voltage power distribution cabinet with a single-door sheet-steel enclosure, used as a sub-distribution or terminal distribution panel downstream of the main GGD / GCS switchgear. The enclosure is folded and welded from cold-rolled steel sheet with a single full-height hinged front door, viewing windows for meters and indicator lamps, a recessed handle with lock and ventilation louvers; the rear panel is bolted. Inside, an incoming moulded-case circuit breaker, outgoing circuit breakers or fuse switches, contactors and terminals are mounted on a removable mounting plate, with top or bottom cable entry. It is simpler and more compact than the GGD switchgear and is suitable for workshops, power rooms and building floors. YAOGU supplies it together with the GGD, GCS and GCK low-voltage switchgear and the KYN28A-12, XGN and HXGN high-voltage switchgear as a complete power distribution solution.

Industry Approvals：
GB 7251.1
IEC 61439-1


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Model:
XL-21

Parameter	LV Switchgear
Common Models	XL-21
Construction	Folded and welded cold-rolled steel sheet enclosure; single full-height front door with viewing windows, recessed lock handle and ventilation louvers; bolted rear panel; removable internal mounting plate; top or bottom cable entry; wall-standing or back-to-back installation. Fixed-mounted distribution circuit: incoming moulded-case circuit breaker or isolating switch, outgoing moulded-case or miniature circuit breakers, contactors and thermal relays for motor feeders, terminal blocks and neutral / earth bars.
Core Function & Performance	Receives 380/400 V power from the upstream GGD or GCS switchgear and distributes it to the lighting, socket, motor and equipment feeders of a workshop, floor or process area; circuit breakers provide switching, overload and short-circuit protection, while meters and indicator lamps on the door show the operating status.
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, miniature circuit breakers, isolating switches or fuse switches, contactors, thermal relays, current transformers, meters, indicator lamps and terminal blocks • Rated busbar current, short-circuit withstand current, protection degree, circuit scheme and dimensions: configured according to project requirements, please contact us.
Typical Application Scenarios	Indoor sub-distribution and terminal power distribution in factories and workshops, power distribution rooms, commercial buildings, hospitals, schools, residential communities, pump rooms and infrastructure projects.

*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, enclosure dimensions and protection degree, door style, metering configuration and cabinet color. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is the XL-21 distribution cabinet?
A	XL-21 Low Voltage Power Distribution Cabinet is an indoor AC 380/400 V low voltage power distribution cabinet. It is an indoor floor-standing low voltage power distribution cabinet with a single-door sheet-steel enclosure, used as a sub-distribution or terminal distribution panel downstream of the main GGD / GCS switchgear. The enclosure is folded and welded from cold-rolled steel sheet with a single full-height hinged front door, viewing windows for meters and indicator lamps, a recessed handle with lock and ventilation louvers; the rear panel is bolted. Inside, an incoming moulded-case circuit breaker, outgoing circuit breakers or fuse switches, contactors and terminals are mounted on a removable mounting plate, with top or bottom cable entry. It is simpler and more compact than the GGD switchgear and is suitable for workshops, power rooms and building floors.
Q	Which standards does this cabinet comply with?
A	The cabinet 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 XL-21 and XLW?
A	XL-21 is the indoor version with a single-door enclosure for installation in dry power rooms, workshops and buildings. XLW is the outdoor version of the same distribution cabinet: it has a sloped rain-shield roof, double doors with rain-hooded louvers, rubber door gaskets, a padlockable handle and a galvanised or stainless-steel enclosure for a higher protection degree, so it can be installed outdoors at construction sites, pump stations, roads and parks.
Q	What is the difference between XL-21 and GGD?
A	GGD is a full-size low voltage switchgear assembly for the main distribution of a 10 kV / 0.4 kV substation with heavy busbars and a separate busbar, equipment and cable compartment. XL-21 is a smaller single-door distribution cabinet used downstream of GGD as a sub-distribution or terminal panel; it is lower in cost, lighter and easier to install.
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	Indoor sub-distribution and terminal power distribution in factories and workshops, power distribution rooms, commercial buildings, hospitals, schools, residential communities, pump rooms and infrastructure projects.
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, installation environment (indoor / outdoor, protection degree), cabinet quantity and dimensions if any. 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.