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HV Ring Main Unit | HXGN-12 Box-type Fixed AC Metal-enclosed Ring Main Switchgear

HV Ring Main Unit | HXGN-12 Box-type Fixed AC Metal-enclosed Ring Main Switchgear is a 12kV indoor box-type fixed AC metal-enclosed switchgear designed for ring main and radial power distribution in urban distribution networks, industrial and mining enterprises, residential communities, commercial buildings and small substations. Each cabinet is a fully enclosed functional unit built around a load break switch (optionally combined with fuses) for ring main or radial power supply, with a simple and robust structure, reliable mechanical interlocking and straightforward operation and maintenance. The HXGN series is a traditional ring main unit type with a large installed base, suitable for both new projects and renovation of existing distribution rooms.

Industry Approvals：
GB 3906
DL/T 404


Availability:



Inquire

Model:
HXGN-12

Parameter	HV Ring Main Unit
Common Models	HXGN17-12, HXGN15-12, XGN15-12, HXGN-12
Construction	Box-type fixed AC metal-enclosed structure; load break switch (optionally load break switch-fuse combination) fixed-mounted inside the cabinet. Traditional HXGN series ring main unit with a large installed base.
Core Function & Performance	Receives and distributes 12 kV power in ring main or radial networks; the load break switch (with or without fuses) switches and protects distribution circuits and transformers, with mechanical interlocks between switch, earthing switch and doors for operator safety.
Technical Specs & Ratings	• Rated Voltage: 12 kV • Standards: GB 3906, DL/T 404 • Main switching device: Load break switch, optionally load break switch-fuse combination • Rated current, breaking capacity and dimensions: configured according to project requirements, please contact us.
Typical Application Scenarios	Ring main and radial power distribution in urban distribution networks, industrial parks, residential communities, commercial buildings, prefabricated substations and small substations.

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

Customization Service

We provide flexible customization services, including cabinet function scheme, voltage class, load break switch, fuse, earthing switch and protection configuration, and cabinet color. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is HXGN-12 ring main unit?
A	HXGN-12 is a 12 kV indoor box-type fixed AC metal-enclosed ring main switchgear. Each cabinet is a fully enclosed functional unit built around a load break switch (optionally combined with fuses) for ring main or radial power supply, with a simple and robust structure, reliable mechanical interlocking and straightforward operation and maintenance.
Q	Which standards does the switchgear comply with?
A	The switchgear is designed and manufactured in accordance with GB 3906 and DL/T 404.
Q	What functional units are available?
A	Typical units include incoming / outgoing load break switch units, load break switch-fuse combination units for transformer protection, metering units and PT units, which can be combined according to your single-line diagram.
Q	What is the difference between a ring main unit and a circuit breaker switchgear?
A	A ring main unit uses a load break switch (with or without fuses) as the main switching device and is designed for compact, economical terminal distribution in ring or radial networks. Circuit breaker switchgear such as KYN28A-12 or XGN66-12 is used where full short-circuit breaking capacity and protection relays are required. We supply both and can recommend the right solution for your project.
Q	Are mechanical interlocks provided?
A	Yes. Mechanical interlocks between the load break switch, earthing switch and cabinet doors are provided to prevent misoperation and protect operators during switching and maintenance.
Q	Where is this switchgear typically used?
A	It is used for receiving and distributing 12 kV power in ring main or radial networks of urban distribution, industrial and mining enterprises, residential communities, commercial buildings and small substations, including renovation of existing distribution rooms.
Q	What information do you need for a quotation?
A	Please send us your single-line diagram or project specifications, including voltage class, rated current, number and function of units, fuse or protection requirements, and we will prepare a configuration and quotation.
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.