12 kV series · Indoor switchgear
A middle-mounted indoor assembly combining circuit-breaking, isolation and earthing functions in the GD configuration. Confirm the rated combination, switch arrangement and cabinet interface against the approved project drawing.
Select VQLA-12GD/630-25 or VQLA-12GD/1250-31.5, then confirm the complete rating pair and cabinet interface for the ordered assembly.
See all 25 technical parametersMatch the electrical and mechanical ratings to the complete VQLA-12GD model. Confirm the current / breaking-duty pair before selecting cabinet interfaces.
Use the VQLA-12GD/630-25 or VQLA-12GD/1250-31.5 rating pair. The withstand values are 42 / 48 kV/kV at power frequency and 75 / 85 kV/kV at lightning impulse: phase-to-earth / phase-to-phase first, then across the vacuum / isolating gap. Confirm project-specific test points against the approved technical schedule.
VQLA-12GD is specified for 50 Hz AC networks rated 6–12 kV. Match the indoor service conditions and cabinet arrangement to the project before ordering.
| Check | Specified condition | Confirm for your project |
|---|---|---|
| Three-position functions | Circuit-breaking, isolation and earthing functions in the GD configuration, with manual or electric operation. | Confirm operating sequence, interlocks and control interface on the approved switchgear schematic. |
| Application | 50 Hz AC networks rated 6–12 kV; listed applications include ring main units, box-type substations and indoor distribution networks. | Confirm project voltage, current and short-circuit duty against a listed complete model. |
| Altitude and ambient temperature | Altitude ≤ 1,000 m; ambient temperature −25 °C to +40 °C. | Request a technical review if the site exceeds either limit. |
| Humidity and environment | Relative humidity: daily average ≤ 95%; monthly average ≤ 90%. Exclude significant pollution and fire or explosion hazards from the installation environment. | Confirm condensation, dust, corrosive agents and enclosure needs. |
| Seismic and installation angle | Seismic intensity ≤ 8; installation inclination ≤ 5 degrees. | Confirm mounting orientation and project seismic requirements with the manufacturer. |
Confirm an agreed equipment specification for special environments or site conditions outside these limits.
VQLA-12 · Drawings
Choose a drawing to coordinate installation clearances or control connections. Confirm dimensions and terminal assignments against the approved project documents for the ordered model.
The manual covers service conditions, operating instructions, outline dimensions and secondary circuits.
Product manual
Application conditions, model designation, rated parameters, outline dimensions and secondary circuits.
Available
Open product manualConfiguration · VQLA-12GD/1250-25
Price reference for the specified VQLA-12GD/1250-25 configuration. Middle-mounted GD assembly; confirm cabinet interfaces and operating supply.
Price range
USD 630–635 / set
USD per complete three-phase set. Minimum order: 1 set. USD 635 per set for 1–9 sets; USD 630 per set for 10+ sets. Shipping and taxes are excluded. Other configurations and accessories require a separate quotation. Confirm the specification and final quotation before ordering.
The range reflects order-quantity tiers for this configuration; it does not cover every option in the series.
| Quantity (sets) | Price per set |
|---|---|
| 1–9 | USD 635 |
| 10+ | USD 630 |
VQLA-12 · Product selection
Answers about model ratings, cabinet fit, service conditions and product documents.
The listed models are VQLA-12GD/630-25 and VQLA-12GD/1250-31.5, pairing 630 A with 25 kA and 1,250 A with 31.5 kA. See the complete specification table for the full ratings.
Compare the mounting interface and cabinet clearances with your switchgear arrangement, then confirm the model-specific dimensions against the approved drawing before fabrication. Review the installation checks and middle-mounted outline.
Confirm altitude up to 1,000 m, ambient temperature −25 °C to +40 °C, daily/monthly mean relative humidity up to 95%/90%, seismic intensity up to 8 and installation inclination up to 5 degrees. Special environments need technical review; see the full installation conditions.
The outline is on manual page 4 and the secondary-circuit diagrams are on page 6. Confirm dimensions and terminal assignments against the approved project documents. Open the drawing selector to view both.
The GD arrangement combines circuit-breaking, isolation and earthing functions. Specify the required operating sequence, position indication and mechanical or electrical interlocks with the panel design. Match the mechanism and secondary circuits to that arrangement using the installation requirements and circuit drawings.
