Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

SPC

IEC

Ceiling pull-cord switch plan mark

A ceiling pull-cord switch is a one-way or two-pole switch fixed to the ceiling and operated by a cord. The plan mark adds a short line with a small arrow or cord end to the switch symbol, telling the reader that the device sits at ceiling level and is operated from below.

Drawing use: GA
Application: Installation & communications
Reference family: IEC
Form evidence: Pull-cord switch, building installation. IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.

A distinction that matters

The schematic pull-cord switch in control circuits is a machine emergency device; this plan mark is a building lighting accessory.

Full reference

PULL CORD

Symbols

Pull-cord switch

A pull-cord switch converts a cord-operated mechanical action into an electrical contact change. The control drawing records the contact function, while the layout records the cord route and actuator placement.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

A generic pull-cord symbol does not certify an emergency-stop function.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.