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Safety Symbols
The general definitions of safety symbols used on equipment or in manuals are listed below.
Direct current.
Alternating current.
Earth ground terminal.
Protective conductor terminal. For protection against electrical shock in case of a fault.
Used with field wiring terminals to indicate the terminal which must be connected to
ground before operating equipment.
Frame or chassis terminal. A connection to the frame (chassis) of the equipment which
normally includes all exposed metal structures.
Grounded terminal which indicates the earth potential.
On supply.
Off supply.
Standby supply. The equipment will be marked with this symbol is not completely
disconnected from AC mains when power switch is in the standby position.
In position of a bi-stable push switch.
Out position of a bi-stable push switch.
Hazardous voltage and potential for electrical shock. Do not touch terminals that have this
symbol when the equipment is on.
Hot surface. Avoid contact. Surfaces are hot and may cause personal injury if touched.
Low temperature or freezing conditions. Avoid contact. Surfaces are cold and may cause
personal injury if touched.
Caution, refer to accompanying documentation. The equipment will be marked with this
symbol when it is necessary for the user to refer to the instruction manual.
Read operator's manual. To indicate that the operator's manual or card should be read
before continuing the operation.
IEC Measurement Category I
CAT I
The CE mark shows that the product complies with all applicable European Directives.
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