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Bypass disconnector product family
Bypass Disconnectors for Recloser and Line Device Maintenance
Bypass disconnectors create a controlled alternate path around a recloser, breaker or line switching device during maintenance. Compare LW15, LW1 and project bypass paths by voltage class, BIL, momentary duty, operation side and mounting layout.
3 bypass pathsLW15, LW1 and project assembly routes keep catalog rows and photo-only data separate.
15 kV to 38 kV source rowsVoltage, BIL and momentary values stay tied to their source tables.
Updated Jun 30, 2026Images, modal data and source boundaries were checked against the supplied bypass folder.
Product paths
Bypass Disconnector Types by Maintenance Path and Voltage Class.
Start with the equipment being bypassed. LW15 covers distribution-class disconnect or bypass rows, LW1 covers compact three-pull recloser bypass duty, and project photos need order-specific ratings.
BD 0115/24 kV
LW15 Distribution-Class Bypass Disconnector
Distribution-class switch path for vertical or inverted cross-arm arrangements where bypass or disconnect duty is reviewed from the LW15 source table.
BD 0215.5-38 kV
LW1 Three-Pull Recloser Bypass Switch
Compact three-pull bypass switch path for recloser or line device maintenance where the bypass blade spans the top terminals.
BD 03Photo-only path
Project Bypass Disconnect Assembly
Project photo path for bypass disconnect assemblies where the layout, device being bypassed and operating sequence drive selection.
Source basisBypass selector, not a copied reference page.
Use XIYA source photos and catalog rows for selection. Third-party reference PDFs can inform appearance, but they are not treated as XIYA rating data.
Application fit
Normal Path, Bypass Path and Maintenance Switching Sequence.
Select the bypass disconnector after the protected device, normal position, bypass position and isolation sequence are clear.
Bypass role
The bypass path is selected around a device, not as a generic disconnect.
Use this family when a recloser, breaker or line switch needs an alternate service path. If the duty is only visible no-load isolation, compare outdoor disconnect switches instead.
Normal path closed through the main device
Confirm the equipment being bypassed and the normal operating position before choosing hardware.
Bypass path closed before the device is isolated
Review bypass blade direction, disconnect position and the approved utility sequence together.
Drawing decides the final package
Mounting channel, cross-arm position, operation side and clearances must be checked from the site drawing.
Selection matrix
Compare Bypass Path, Device Position and Rating Inputs.
Use the matrix to separate LW15, LW1 and project assembly paths before checking voltage, current, BIL and momentary duty.
Product type
Application point
Bypass interface
Project data
LW15 bypass path15/24 kV rows
Distribution switching/Cross-arm mounting/Disconnect or bypass duty
V-style or LS base/Truss blade/400 / 630 A rows
Voltage class/Rated current/Impulse row/PF withstand/Mounting base
LW1 recloser bypass15.5-38 kV rows
Recloser bypass/Maintenance path/Three-pull operation
Bypass blade/Hookstick disconnects/Galvanized channel
Bypassed device/BIL row/40 kA momentary/Operation side/Sequence drawing
Project assemblyOrder file required
Site layout review/Bypass path/Project-specific fit
Mounting channel/Operating ring/Hinge and jaw contacts
Voltage/Current/BIL/Momentary duty/Mounting drawing
Structure
Bypass Blade, Hook-Stick Operation and Mounting Channel Inputs.
With the bypass path selected, check blade arrangement, hook-stick operation, insulator class and mounting channel against the drawing.
Structure inputs
Use these four checks before the model is released.
Bypass bladeBlade across top terminals, hinge contact, jaw contact and open position.
Hook-stick interfaceHookstick-operated disconnects, operating rings and linkage hardware.
Insulators and contactsInsulator class, hinge contact, jaw contact and terminal spacing.
Mounting channelGalvanized base channel, cross-arm mount, backstrap or direct bolting.
Variant handling
Voltage, BIL and Momentary Current Boundaries.
Keep LW15 table values, LW1 bypass values and project photo-only data in separate engineering rows.
Use 15 / 24 kV and 400 / 630 A only from the LW15 table.
The 12.5 kA 4 s and 31.5 kA shock rows belong to LW15 first-stage comparison.
Use BIL and momentary rows for recloser bypass duty.
LW1 rows list 15.5, 27 and 38 kV classes, BIL up to 150 kV and 40 kA momentary current.
Review files
Review Files for Bypass Disconnector Selection.
Separate clean product identity, catalog rating rows, bypass topology and project drawings. LW1 now includes a cleaned Drawing tab from the supplied project PDF.
Use clean white-background product photos
LW15, LW1 and project assembly photos identify structure without exposing catalog scans.
Match each value to its source table
Voltage, current, BIL and momentary values should not be copied across LW15, LW1 and photo-only paths.
Keep the Drawing tab conditional
LW1 uses the cleaned project PDF drawing. LW15 and project photo-only paths stay SPEC-only until clean release drawings are supplied.
Keep bypass sequence with device data
Bypassed equipment, normal position, bypass position, operation side and mounting drawing should be checked together.
Engineering selection
Engineering Selection Inputs for Bypass Disconnectors.
Lock the bypassed equipment first, then check voltage, BIL, momentary duty and mounting sequence against the site drawing.
Recloser, breaker or line device position decides the bypass path.
Operation sequence must show when each disconnect and bypass blade is open or closed.
Keep LW15, LW1 and project-only values in separate rows.
Mounting channel, cross-arm, backstrap, direct bolting and operation side drive the final package.
Product pathLW15 / LW1 / project bypass assembly.
Bypassed deviceRecloser, breaker or line switching device.
System voltage15, 24, 27, 38 kV or project value.
Rated current400 A, 630 A or utility requirement.
BIL / withstandImpulse, PF withstand and momentary current.
SequenceNormal, bypass and isolation positions.
Operation sideRight-hand, left-hand, hook-stick or project practice.
Mounting layoutCross-arm, channel, backstrap, terminal spacing and quantity.
FAQ
Bypass Disconnector Selection FAQ.
What is a bypass disconnector used for?
A bypass disconnector provides an alternate path around a recloser, breaker or line device so the equipment can be serviced according to an approved switching sequence.
How should engineers choose between LW15 and LW1 paths?
Use LW15 rows when the disconnect or bypass duty follows the 15 kV or 24 kV distribution-class table. Use LW1 when the project is a compact three-pull recloser bypass arrangement with 15.5 kV to 38 kV design classes.
Can project photos define the rating?
No. Project photos show layout, mounting channel and operating hardware only. Voltage, current, BIL and momentary duty must come from the order file or catalog row.
Are reference PDFs treated as XIYA rating data?
No. Third-party reference PDFs can help compare appearance or application logic, but XIYA selection should rely on supplied XIYA catalog rows, product photos and project drawings.
What information should be sent with a bypass disconnector RFQ?
Send the device being bypassed, system voltage, rated current, BIL, momentary current, normal and bypass sequence, operation side, mounting drawing, quantity and destination standard.
Request a Quote With Bypass Disconnector Details.
Send the bypassed device, voltage, current, BIL, momentary current, normal and bypass sequence, operation side, mounting drawing, quantity and destination standard. XIYA will return the suitable bypass path, drawing check, quotation boundary and documentation list.