{"schemaVersion":1,"slug":"iec-motor-starter-form-motor-starter-coil","name":"IEC motor-starter form: motor starter coil","kind":"symbol","abbreviation":"KM","aliases":["HMS1","VMS1","motor-starter form Motor Starter Coil"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"Motor-starter form form: Motor Starter Coil.","description":["A motor starter uses an operating coil and power contacts to control the motor feeder. The coil belongs to the control circuit; the main contacts carry motor current. Auxiliary contacts report or interlock operation but do not replace the main poles. This entry identifies the motor starter coil form in the publisher's IEC-context family.","A start command can energise the starter coil while the linked main poles connect the motor supply. Reuse the same device tag on the coil and contacts, then cross-reference overload and short-circuit protection as distinct parts of the feeder. ","The contact illustration is a functional view of one pole, not a complete motor starter or a proof of fault protection. Coil voltage, duty, overload coordination and the number of linked poles come from the chosen equipment and design."],"readingNotes":["A start command can energise the starter coil while the linked main poles connect the motor supply. Reuse the same device tag on the coil and contacts, then cross-reference overload and short-circuit protection as distinct parts of the feeder.","The contact illustration is a functional view of one pole, not a complete motor starter or a proof of fault protection. Coil voltage, duty, overload coordination and the number of linked poles come from the chosen equipment and design."],"drawingChecklist":["Use one starter tag across coil, main poles and auxiliaries.","Identify the control supply and the main power path.","Reference motor protection and the complete pole arrangement."],"distinction":"This entry adds the motor starter coil detail to the broader motor-starter form family. The contact illustration is a functional view of one pole, not a complete motor starter or a proof of fault protection. Coil voltage, duty, overload coordination and the number of linked poles come from the chosen equipment and design.","facts":[{"label":"Drawing form","value":"Motor Starter Coil"},{"label":"Public vendor block names","value":"HMS1 / VMS1. Autodesk identifiers, not standards database IDs."},{"label":"Drawing purpose","value":"motor-starter form"},{"label":"Graphic scope","value":"Independently authored educational illustration; not certified standard geometry, a terminal pinout or a product footprint."}],"references":[{"sourceId":"s28-iec-motor-starters","relevance":"Public Motor Starters table explicitly lists HMS1 / VMS1 with this operating or connection form. Vendor graphics are linked, not copied."}],"related":["contactor","motor","motor-overload-trip-nc-contact"],"artwork":"s28-iec-motor-starter-form-motor-starter-coil","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Motor Starter Coil","reference":"Autodesk IEC-60617 Symbol Preview: Motor Starters, HMS1 / VMS1. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted."},"plainEnglish":{"title":"What does IEC motor-starter form: motor starter coil mean?","introduction":"A motor starter uses an operating coil and power contacts to control the motor feeder. The coil belongs to the control circuit; the main contacts carry motor current. Auxiliary contacts report or interlock operation but do not replace the main poles. This entry identifies the motor starter coil form in the publisher's IEC-context family.","example":"A start command can energise the starter coil while the linked main poles connect the motor supply. Reuse the same device tag on the coil and contacts, then cross-reference overload and short-circuit protection as distinct parts of the feeder. ","drawings":"The contact illustration is a functional view of one pole, not a complete motor starter or a proof of fault protection. Coil voltage, duty, overload coordination and the number of linked poles come from the chosen equipment and design.","terms":[{"name":"Normally open / normally closed","meaning":"The contact state in the normal condition defined for the drawing."},{"name":"Coil","meaning":"A wound conductor that can produce a magnetic field when energised."},{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEC-60617 Symbol Preview: Motor Starters","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-447B81E9-A99C-447D-A25B-C2C061D43BC3.htm"}],"detail":"Motor-starter form form: Motor Starter Coil. This entry adds the motor starter coil detail to the broader motor-starter form family. The contact illustration is a functional view of one pole, not a complete motor starter or a proof of fault protection. Coil voltage, duty, overload coordination and the number of linked poles come from the chosen equipment and design.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/iec-motor-starter-form-motor-starter-coil","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/iec-motor-starter-form-motor-starter-coil.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"s28-iec-motor-starters","title":"Autodesk IEC-60617 Symbol Preview: Motor Starters","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-447B81E9-A99C-447D-A25B-C2C061D43BC3.htm","type":"cad-reference","scope":"Public motor starters family names and vendor block tokens. Horizontal, vertical and rotated placements are not separate engineering functions. Exact standard geometry is not reproduced.","checkedOn":"2026-10-28","reuse":"link-only","relevance":"Public Motor Starters table explicitly lists HMS1 / VMS1 with this operating or connection form. Vendor graphics are linked, not copied."}]}