Connecting The Power Supply - Siemens NCU 7x0.3 PN Series Manual

Connecting
7.4 Power supply
7.4.3

Connecting the power supply

Wiring the screw-type terminal block
The required 24 V DC load current supply is wired to screw-type terminal block X124.
The 24 V direct voltage is to be configured as a protective extra low voltage - DVC A or
PELV.
Supply system lines
Table 7- 5
Characteristics
Connector type
Connection option
Current carrying capacity incl. looping through the
cable
Max. cable length
*)
Use flexible cables with a cross section of 0.25 to 2.5 mm
the power supply.
If you only use one wire per connection, an end sleeve is not required.
You can use end sleeves without an insulating collar in accordance with DIN 46228, Form A
long version.
48
DANGER
Cable specification for X124
This value must be taken into consideration for the current-carrying capacity of the power supply
cable.
Version
Screw-type terminals
Up to 2.5 mm
2
max. 30 A
*)
10 m
(or AWG 23 to AWG 13) for wiring
2
Manual, 09/2011, 6FC5397-1EP40-0BA0
NCU 7x0.3 PN