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Earthing switch product types
Earthing Switches for Maintenance Grounding and Interlock Sequence
Earthing switches ground an isolated circuit before maintenance work. Compare JN15, JN17 and GN22 earthing switch product types up to 33 kV by grounding sequence, short-time withstand duty, operating shaft and mounting interface.
Product types
Earthing Switch Types
Start with the maintenance grounding point. JN15, JN17 and GN22 can be reviewed up to 33 kV, while short-time duty, phase distance and mounting release still need the model-specific order file.
ES 01up to 33 kV
JN15-12/31.5 Combined Earth Switch
Indoor earthing switch type for switchgear grounding positions where short-time withstand and interlock sequence matter.
ES 02up to 33 kV
JN17(15)-12/40 Indoor Grounding Switch
Indoor high-voltage grounding switch for cabinet grounding protection after the isolation position is known.
ES 03up to 33 kV
GN22 Three-Column Earthing Switch
GN22 three-column earthing switch configuration for grounding blade, insulator and base-frame structure checks.
Reference basisEarthing switch selector with three confirmed product types.
JN15, JN17 and GN22 are the selected product types for this earthing switch selector. Keep GN10 and unrelated disconnect references out of this selector.
Application fit
Maintenance Grounding Topology
Select an earthing switch only after the upstream isolation point, interlock state and grounded maintenance zone are clear.
Grounding role
Earthing follows isolation. It does not replace load switching.
Use this configuration when the isolated circuit needs a visible grounding device for maintenance. If the duty is visible no-load isolation or indoor disconnect operation, compare the disconnect switch pages instead.
JN15, JN17 or GN22 cabinet grounding configuration
Use when the switchgear drawing already defines the isolation state, interlock and grounding operation side.
Short-time current check
Review 40 kA, 4 s and 100 kA peak rating rows separately from the mechanical mounting layout.
Up to 33 kV after model confirmation
Confirm insulation level, short-time duty and installation drawing before release.
Selection matrix
Earthing Switch Selection Matrix
Use the matrix to pick the grounding configuration first, then check short-time duty, peak value, phase distance and cabinet interface.
Product type
Application point
Grounding interface
Project data
JN15 combined earthup to 33 kV
Switchgear grounding/Cabinet maintenance/Interlock sequence
Grounding shaft/Earthing blade/Phase distance rows
33 kV project class/40 kA / 4 s/Phase distance/Interlock state/Cabinet drawing
JN17 grounding switchup to 33 kV
Indoor grounding/Maintenance protection/Cabinet fit
Copper terminal block/Static contact/Open-hole layout
Short-time duty/Peak current/Install opening/Bus layout/Operation side
GN22 three-columnup to 33 kV
Grounding point/Structure reference/Project-specific fit
GN22 model/Three-column frame/Manual linkage
Voltage class/Short-time duty/Mounting drawing/Handle side/Quantity
Structure
Operating Shaft and Mounting
With the product type selected, check the earthing blade, contact travel, operating shaft, insulator set and mounting holes against the cabinet drawing.
Structure inputs
Use these four inputs before the model is released.
Grounding bladeBlade travel, static contact, copper bar and closed grounding position.
Operating shaftManual shaft, linkage arm, handle side and interlock interface.
Insulator and baseSupport insulators, base frame, terminal block and mounting holes.
Cabinet fitPhase distance, open-hole layout, bus position and panel drawing.
Variant handling
Short-Time Withstand Boundaries
Keep the 33 kV project capability, withstand rows and outline dimensions separate during engineering review.
Confirm the 33 kV project class separately from short-time duty.
JN15, JN17 and GN22 can be reviewed up to 33 kV. Use rating rows and order files for current, short-time duty and insulation level.
Review phase distance and opening layout before release.
JN15 includes phase-distance rows from 165 mm to 275 mm. JN17 includes 210 mm to 275 mm rows and cabinet opening references.
Review files
Earthing Switch Documents
Separate clean product identity, rating rows, topology sequence and factory drawings. Do not expose mixed-label scans as drawing buttons. For broader document review, download earthing switch catalog PDFs.
Use clean product photos only
JN15, JN17 and GN22 images can identify structure, while scanned pages remain internal references.
Separate voltage capability from withstand duty
All three product types can be reviewed up to 33 kV. Use rating rows or order files for current, 4 s duty and peak values.
Use clean English drawings where available
Cleaned Drawing tabs are used for JN15 and JN17; mixed-label technical scans stay internal.
Keep grounding sequence with interlock data
Isolation state, grounding position, operating side and cabinet drawing should be checked together.
Engineering selection
Earthing Switch RFQ Data
Lock the isolation state first, then check short-time withstand duty, interlock and mounting interface against the cabinet drawing. For procurement review, check certificates, test reports and RFQ forms before release.
Confirm the upstream open point and maintenance zone before selecting the earthing switch.
Keep 40 kA / 4 s, 100 kA peak and insulation level in the engineering file.
Operating shaft, handle side and power display option must match the panel design.
Phase distance, terminal block, opening layout and bus position drive the final model.
Selection typeJN15 / JN17 / GN22.
System voltageUp to 33 kV project class or specified value.
Short-time duty40 kA / 4 s or required project value.
Peak current100 kA rating row or utility requirement.
Insulation levelPF withstand and lightning impulse values.
Phase distance165-275 mm phase-distance rows or cabinet drawing.
Operation sideManual shaft, handle side and interlock position.
Panel contextCabinet type, bus layout, opening drawing and quantity.
FAQ
Earthing Switch FAQ
What earthing switch data is needed for RFQ?
Send product type, system voltage, short-time withstand current, duration, peak current, insulation level, phase distance, cabinet drawing, interlock requirement, operation side and quantity.
Where is an earthing switch used in the isolation sequence?
An earthing switch grounds an isolated circuit or switchgear section for maintenance. It should be operated only in the approved isolation and interlock sequence.
How should engineers choose between JN15, JN17 and GN22?
Start with cabinet position, phase distance, interlock arrangement and mounting layout. All three product types can be reviewed up to 33 kV, but current, short-time duty and drawing release still need model-specific confirmation.
Is the three-column product GN22?
Yes. The three-column product shown in this selector is handled as GN22. GN10 remains an adjacent indoor disconnect reference and should not be mixed into the earthing switch selector.
When are earthing switch drawing views available?
Use public drawing buttons only where clean English outline drawings are available. If no clean drawing exists, include a factory drawing request with the RFQ.
Request Earthing Switch Quote
Send product type, system voltage, short-time withstand current, duration, peak current, phase distance, cabinet drawing, interlock requirement, operation side, quantity and destination standard. XIYA will return the suitable grounding switch configuration, drawing check and quotation scope.