# IEC fused switching form: 1 phase disconnect with fuse Canonical URL: https://eloragrid.ai/symbols/iec-fused-switching-form-1-phase-disconnect-with-fuse Publisher: Elora Grid Updated: 2026-10-28 Lookup label: QS Drawing use: Schematic Reference families: IEC, Manufacturer ## Symbol convention Convention: IEC Form: 1 Phase Disconnect with Fuse Autodesk IEC-60617 Symbol Preview: Fusible Disconnects, HDS11Q81 / VDS11Q81. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted. Fused switching form form: 1 Phase Disconnect with Fuse. ## In plain English ### What does IEC fused switching form: 1 phase disconnect with fuse mean? A fused switching form identifies a switch and a fuse within the documented arrangement. Switching load current, providing isolation and interrupting a fault are separate capabilities, and the drawing must show which element performs each role. This entry identifies the 1 phase disconnect with fuse form in the publisher's IEC-context family. ### A simple example An outgoing panel feeder can show a fused switch with its operating handle and fuse reference. Keep the switching tag linked to the fuse schedule so replacement protection and the intended switching duty can be checked together. ### What the drawings help you do The family name does not establish a device utilization category or prove that a fuse carrier may be moved under load. Use the selected assembly documentation for load operation, isolation indication, fuse class and any interlocks. ### This particular reference Fused switching form form: 1 Phase Disconnect with Fuse. This entry adds the 1 phase disconnect with fuse detail to the broader fused switching form family. The family name does not establish a device utilization category or prove that a fuse carrier may be moved under load. Use the selected assembly documentation for load operation, isolation indication, fuse class and any interlocks. ### Terms - Phase: One of the related AC waveforms in a power system. - Rating: A value stating the conditions for which equipment is specified. - Schematic: A drawing showing function and connections rather than physical appearance. Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram. - [AutoCAD Electrical: Fusible disconnects](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-FE7E6B30-F585-41F4-9F66-215ACD95A36D.htm) ## What it represents A fused switching form identifies a switch and a fuse within the documented arrangement. Switching load current, providing isolation and interrupting a fault are separate capabilities, and the drawing must show which element performs each role. This entry identifies the 1 phase disconnect with fuse form in the publisher's IEC-context family. An outgoing panel feeder can show a fused switch with its operating handle and fuse reference. Keep the switching tag linked to the fuse schedule so replacement protection and the intended switching duty can be checked together. The family name does not establish a device utilization category or prove that a fuse carrier may be moved under load. Use the selected assembly documentation for load operation, isolation indication, fuse class and any interlocks. ## How to read it - An outgoing panel feeder can show a fused switch with its operating handle and fuse reference. Keep the switching tag linked to the fuse schedule so replacement protection and the intended switching duty can be checked together. - The family name does not establish a device utilization category or prove that a fuse carrier may be moved under load. Use the selected assembly documentation for load operation, isolation indication, fuse class and any interlocks. ## Information to show or reference - Identify the switching element and associated fuse references. - State whether the device switches load current and provides isolation. - Reference fuse class, current rating and operating instructions. ## Important distinction This entry adds the 1 phase disconnect with fuse detail to the broader fused switching form family. The family name does not establish a device utilization category or prove that a fuse carrier may be moved under load. Use the selected assembly documentation for load operation, isolation indication, fuse class and any interlocks. ## Facts - Drawing form: 1 Phase Disconnect with Fuse - Public vendor block names: HDS11Q81 / VDS11Q81. Autodesk identifiers, not standards database IDs. - Drawing purpose: fused switching form - Graphic scope: Independently authored educational illustration; not certified standard geometry, a terminal pinout or a product footprint. ## Public references - [AutoCAD Electrical: Fusible disconnects](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-FE7E6B30-F585-41F4-9F66-215ACD95A36D.htm) — Autodesk. Public Fusible Disconnects table explicitly lists HDS11Q81 / VDS11Q81 with this operating or connection form. Vendor graphics are linked, not copied. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.