The following table lists the meaning of the safety symbols labeled on the
equipment.
No. Symbol mark Approved
standards
Meaning
A
IEC60417
No. 5007
"ON" (power)
To indicate connection to the mains.
B
IEC60417
No. 5008
"OFF" (power)
To indicate disconnection from the mains.
C
IEC60417
No. 5009
Stand-by
To identify the switch or switch position
by means of which part of the equipment is
switched on in order to bring it into the
stand-by condition.
D
ISO7000
No. 0434B
IEC3864-B3.1
Caution
To identify general caution when using the
product.
E
IEC60417
No. 5041
Caution, hot surface
To indicate that the marked item can be
hot and should not be touched without
taking care.
F
IEC60417
No. 6042
ISO3864-B3.6
Caution, risk of electric shock
To identify equipment that has risk of
electric shock.
G
IEC60417
No. 5957
For indoor use only
To identify electrical equipment designed
primarily for indoor use.
H
IEC60417
No. 5926
Polarity of d.c. power connector
To identify the positive and negative
connections (the polarity) on a piece of
equipment to which a d.c. power supply
may be connected.
No. Symbol mark Approved
standards
Meaning
I
IEC60417
No. 5001B
Battery, general
On battery powered equipment. To
identify a device for instance a cover for
the battery compartment, or the
connector terminals.
J
IEC60417
No. 5002
Positioning of cell
To identify the battery holder itself and to
identify the positioning of the cell(s)
inside the battery holder.
K
IEC60417
No. 5019
Protective earth
To identify any terminal which is intended
for connection to an external conductor
for protection against electric shock in
case of a fault, or the terminal of a
protective earth electrode.
L
IEC60417
No. 5017
Earth
To identify an earth (ground) terminal in
cases where symbol No. 11 is not explicitly
required.
M
IEC60417
No. 5032
Alternating current
To indicate on the rating plate that the
equipment is suitable for alternating
current only; to identify relevant
terminals.
N
IEC60417
No. 5031
Direct current
To indicate on the rating plate that the
equipment is suitable for direct current
only; to identify relevant terminals.
O
IEC60417
No. 5172
Class II equipment
To identify equipment meeting the safety
requirements specified for Class II
equipment according to IEC 61140.
List of Safety Symbols Compliant with IEC60950-1 A2
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