Siemens ULTRAMAT 23, Manual, Page: 68 / 244

Connecting
5.1 Safety instructions
ULTRAMAT 23
68
Manual, 3/2016, A5E37100388-003
5.1.4 Electrical circuit breaker in accordance with IEC 60947-1
Note
Electrical circuit breaker in accordance with IEC 60947-1 and IEC 60947-3
In accordance with IEC 60947-1 "Standard for low-voltage switchgear and controlgear" and
IEC 60947-3 "Switches, disconnectors, fuses" you require an electrical circuit breaker for the
device.
We recommend commercially available automatic circuit breakers.
5.1.5 Dangerous contact voltage
WARNING
Dangerous contact voltage
Danger of electric shock in case of incorrect connection.
• For the electrical connection specifications, refer to the information in Electrical
connection (Page 73).
•
At the mounting location of the device observe the applicable directives and laws for
installation of electrical power installations with rated voltages below 1000 V.
5.1.6 Missing PE/ground connection
WARNING
Missing PE/ground connection
Danger of electric shock.
Depending on the device version, connect the power supply as follows:
•
Power plug: Ensure that the used socket has a PE/ground conductor connection. Check
that the PE/ground conductor connection of the socket and power plug match each
other.
•
Connecting terminals: Connect the terminals according to the terminal connection
diagram. First connect the PE/ground conductor.