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

DS LOCK

IEEE / ANSI

ANSI/IEEE lockable disconnector symbol

This form combines a disconnector power path with a locking provision. The drawing reader needs the lockable position and mechanism reference so a lock mark does not become an unsupported claim about all possible device positions.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Disconnect 1 Pole functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

Lockability describes mechanical retention; it does not increase electrical interrupting capability.

Full reference

DS LOCK

Symbols

Lockable disconnector

A lockable disconnector has a mechanism that can retain the isolation position under a specified locking arrangement. The representation needs the operating position and lock reference in addition to the main contact.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer

A distinction that matters

Lockability describes the mechanism; load-breaking capability describes electrical duty.

Full reference

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