Siemens 3TK2845, Manual

Page: 47 / 68

Mounting, Wiring, Initial Start-up
3TK2845 Multifunction Device Manual
GWA 4NEB 926 2087-22 DS 01
4-3
4.1 Mounting and Coding
The 3TK2845 multifunction device is designed for snap-on mounting on a
35 mm standard mounting rail complying with EN 50 022. The devices can also
be screw mounted with two push-in lugs, order number 3RP1903.
Fig. 4-1: 3TK2845 multifunction device for snap-on or screw mounting
Removable terminals simplify exchanging the device according to need. The
terminals are coded to prevent a mix-up.
Warning
Before exchanging the terminals, disconnect power from system and device.
The terminal blocks can be disconnected in the order a, b and can be connected in
the order c, d .
Fig. 4-2: Mounting and coding of the removable terminals
35 mm standard mounting rail
3RP1903
a
b
d
c
A
C
D
B
A, B, C, D:
Coding