Insulating plug or plate inserted between normally-closed contacts

Introduced: September 1968

Last revised: January 2006

Full Title

Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings > Insulating plug or plate inserted between normally-closed contacts

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES