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0678106030L02 1411V002
Mounting
7.5 Protection of the supply cur-
rent
DANGER
Insufficient protection of the units
Insufficient protection of the units may
result in fire, electric shock, personal in-
jury or material damage!
• Protect the supply current circuits at
all poles according to the short-circuit
current of the electric motors�
• In the case of unmonitored installa-
tion, overcurrent protection in accord-
ance with EN 60204-1:2006, 7�2
must be provided�
We recommend to install a motor pro-
tection circuit breaker� At least one line
cable fuse with the rated c 10%
must be used unless specified other-
wise�
7.6 Motor protection - tempera-
ture
Single-phase AC motors
The single-phase AC motors are fitted with a
normally-closed temperature switch� This pre-
vents overheating of the motor winding in the
case of excessive ambient temperatures� The
device shuts down if it overheats�
Units AG-132, art� no� 0431 2300 (KK40) and
A-100, art� no� 0880-03 (KK70) are fitted with a
passive temperature switch� A suitable, open re-
lay switching all poles must be connected if
necessary� The connection points are located in
the terminal box� The temperature switch shuts
the device down if it overheats�
Oil-free compressor stations and accessories
must be electrically connected in accordance
with the wiring diagrams "7�7 Circuit diagram"�
Three-phase AC motors
The three-phase motors are not fitted with a
temperature protection device�
In the event of a machine malfunction (e�g� as a
result of a blackout, phase failure, start-up un-
der pressure, mechanical faults of the device or
a short circuit),
there is no protection.
The electric motor may overheat!
The electrical connection must be performed in
accordance with the wiring diagrams see "7�7"
on page 70�
Observe the information provided in the wiring
diagrams, label or circuit diagram in the terminal
box when making the electrical connection�
7.3 IP rating
DANGER
Take note of the IP rating for pro-
tecting the units against contact,
foreign bodies and moisture
Failure to observe this information may
result in electric shock, personal injury
or material damage�
• The units may only be installed or
used in accordance with their IP rat-
ing�
• The operator must ensure that the
unit is provided with the IP rating in
accordance with the purpose for
which it is used�
The term "IP rating" (International Pro-
tection) is defined by IEC/EN 60529
"Type of protection by housing (IP
code)�
The units are available with different types of
protection (IP00 to IP54 - see see "4 Technical
data" on page 21)�
Units of P00 rating offer no protection against
contact, foreign bodies and moisture� The oper-
ator is responsible for ensuring that the units
may only be installed or used in accordance
with their IP rating�
A fixed electrical installation that complies with
wiring regulations is required�
If the terminal box is fitted (e�g� 2 cylinders A/B-
062), the electrical components are covered�
The IP rating is then IP20�
7.4 Direction of rotation
Single-phase AC motors and three-phase AC
motors have no preferred direction of rotation�
The direction of rotation of DC permanent-mag-
net motors is specified on the motor�
EN
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