Q070109
Positive-operation direction qualifier
A positive-operation qualifier identifies the documented mechanically imposed operating direction.
IEC
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Electrical symbols.
Explore electrical symbols and meaningful variants used in single line diagrams and control schematics, with definitions, drawing notes, public sources and original concept illustrations.
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1095 entries · Original illustrations
IEC symbol forms
Q021301
Manual-operation qualifier
This qualifier identifies an operator action applied to the associated mechanism.
IEC
Q021302
Protected-access manual-operation qualifier
This qualifier indicates that manual access to the operating mechanism is protected or restricted.
IEC
Q021305
Pushbutton-operation qualifier
A pushbutton qualifier identifies the actuation method of a contact or device.
IEC
Q021308
Emergency-operation qualifier
An emergency-operation qualifier marks the documented emergency actuation role.
IEC
Q021304
Rotary-operation qualifier
This qualifier identifies an operating mechanism actuated by rotation.
IEC
Q021313
Key-operation qualifier
A key-operation qualifier identifies a mechanism requiring the specified key action.
IEC
Q021310
Foot-operation qualifier
This qualifier identifies actuation by a foot-operated mechanism.
IEC
Q021311
Lever-operation qualifier
A lever-operation qualifier identifies a manually moved lever mechanism.
IEC
Q021214
Crank-operation qualifier
This qualifier identifies manual operation through a crank mechanism.
IEC
Q021309
Handwheel-operation qualifier
A handwheel qualifier identifies an operating mechanism moved by a wheel.
IEC
Q021401
Liquid-level actuation qualifier
This qualifier identifies actuation responding to liquid level.
IEC
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Small details. Different meanings.
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