Installation
12
3ZX1012-0RB12-1AA1
En
glis
h
2
Installation
For dimension drawings, see graphics section, Fig.
I
and
II.
Mounting position: any
Mounting of 70 mm devices:
■
Snap-on mounting on 35 mm mounting rail in con-
formity with EN 50 022 or
■
srew mounting by means of inserted lugs as
accessory (3RB1900-0B).
Mounting of the 120 mm, 145 mm und 230 mm
devices:
■
Crew mounting integrated in the casing.
■
In addition for 120 mm size:
Baseplate for snap-on fastening on 75 mm mount-
ing rail (3UF1900-0J) available as accessory.
3
Connection
3.1
Main conductor connection
3.1.1
Current range up to 100 A
■
Rated motor currents from 1.25 A to 100 A:
Insert the motor leads per phase through the open-
ings (x) in the unit (see graphics section, Fig.
I
a).
■
Rated motor currents less than 1.25 A:
Insert the motor leads per phase through the open-
ings (x), take them back through the loop opening (y)
and insert them again through the openings (x). You
will produce two loops in this way (see graphics sec-
tion, Fig.
I
a).
The following table lists the number of loops for the
various rated motor currents.
