12 kV series · Indoor isolation
No-load isolating switch for indoor 12 kV, 50 Hz systems. Choose the current and withstand combination, mounting form and manual operating arrangement for your panel.
Operate only with the circuit unloaded. Rated current and thermal / dynamic withstand values are paired by model; they do not define load-breaking capability.
Choose a complete current and withstand combination, then match the installation form and site conditions. Operate the disconnector only with the circuit unloaded.
GN19-12 is the flat-mounted form; GN19-12C is the through-wall form. Thermal and dynamic withstand currents are paired with rated current by model and do not define load-breaking capability.
For pollution-resistant W, high-altitude G or voltage-display X derivatives, confirm the derivative-specific rating and installation schedule. Agree any site conditions outside this envelope before ordering.
Match the flat-mounted, side-mounted or through-wall form to the panel. Specify the primary connections, operating direction and accessories together.
| Arrangement | Mechanical and primary fit | Operating interfaces and accessories |
|---|---|---|
| Flat-mounted GN19-12 | Match the phase spacing, fixing holes and primary-terminal layout to the panel. | Left- and right-hand operation are usual. Specify upright or inverted blade orientation and the operating linkage. |
| Side-mounted GN19-12M | Match the operating panel, frame fixing points and primary-terminal clearances. | Specify left or right operation, upright or inverted mounting, and the matching socket and handle. |
| Through-wall GN19-12C | Choose C1 blade side through the wall, C2 stationary-contact side, or C3 both sides. Specify the primary-conductor layout. | Confirm the through-wall side and operating linkage on the complete assembly drawing. |
State the full model, quantity, rated current / withstand combination, installation form and manual mechanism. Confirm the assembly outline, wall or panel interface, phase order and operating sequence before ordering. Usual selections depend on the chosen form.
Compare the flat-mounted, through-wall and side-mounted arrangements. Use the approved order drawing to confirm dimensions, units, tolerances and the selected arrangement.
These callouts apply to the four listed 630 A and 1,250 A models. Confirm the exact assembly and mounting-hole detail on the approved order drawing.
Use the manual and selection form to specify the mounting arrangement, operating linkage and accessories.
Available · PDF · 4 pages
Ratings, service conditions, GN19-12 and GN19-12C installation arrangements, operation and ordering details. Confirm the selected model and cabinet interfaces.
Available · DOC
Specify quantity, full model, mounting arrangement, phase spacing, operating direction, mechanism, auxiliary contacts and voltage-presence sensors. Confirm inverted-mounting spring requirements and the complete order drawing.
Configuration · GN19-12/630
Price reference for the specified GN19-12/630 configuration. 630 A three-pole disconnector. Other currents and operating arrangements are quoted separately.
Price range
USD 140–150 / set
USD per complete three-phase set. Minimum order: 1 set. USD 150 per set for 1–99 sets; USD 140 per set for 100+ 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 |
|---|---|
| 1–99 | USD 150 |
| 100+ | USD 140 |
Answers about no-load isolation, mounting arrangements and ordering requirements.
Specify the full model suffix. The listed current / 4 s thermal / dynamic combinations are 400 A / 12.5 kA / 31.5 kA, 630 A / 20 kA / 50 kA, 1000 A / 31.5 kA / 80 kA and 1250 A / 40 kA / 100 kA for GN19-12 and GN19-12C. These are paired withstand ratings. See the model rating schedule.
GN19-12 is an indoor disconnector for isolation at voltage under no-load conditions. Its thermal and dynamic withstand ratings are not load-breaking or short-circuit interruption ratings. Coordinate circuit opening and isolation with the switchgear operating procedure.
GN19-12 is the flat-mounted version; GN19-12C is the through-wall family. C1 passes through the blade side, C2 through the stationary-contact side and C3 through both sides. Confirm wall connections, operating direction and clearances against the installation choices and selected outline.
An inverted blade-down assembly requires an opening-holding spring. The spring is also required for an inverted side-mounted assembly with an operating panel. Confirm mounting direction, mechanism and operating access in the selection form before ordering.
The assembly with an integral earthing blade is designated GN24. Specify the correct product identity and confirm the complete arrangement; do not treat it as a GN19-12 configuration. See the installation and operating options.
Provide quantity, complete model, mounting arrangement, phase spacing, operating direction and mechanism selection, including any auxiliary contacts or voltage-presence sensors. For a side-mounted assembly, confirm the handle and sleeve. Use the approved order drawing to confirm dimensions, units, tolerances and interfaces. Complete the selection form with the required arrangement.
