Siemens SITOP SEL1200, Manual

Page: 34 / 52

Installation
5.1 Connection at the input
SITOP SEL1200-1400
34
Manual, 06.2019, A5E46496083-1-76
Figure 5-1 Input connection
The supply is connected via input terminal
①
, designated "24 V" and the 0 V terminal
②
,
designated "0 V"; the "0 V" connection is not used for the load supply, but only to supply the
internal electronics of the selectivity module (terminal cross-sections, see Figure 2-2
Terminal data (Page 11)).
NOTICE
Overload of the wiring
The "0 V" connection is only used to supply the internal electronics of the selectivity
module. The 0 V of the connected loads must be routed directly to the power supply using
separate cables!
NOTICE
Overload of the wiring
The input terminals of the selectivity module are designed for a maximum input current of
40 A or 60 A. This must be taken into account when connecting several selectivity modules
in parallel by "looping through". If the total current demand of all selectivity modules
connected in parallel is more than 40 A or 60 A, then the maximum current should be
reduced to 40 A or 60 A per branch by using additional feeder cables directly from the
power supply to the selectivity modules connected in parallel.