Siemens SIMATIC ET 200SP HA Manuel D'utilisation page 51

Example
The following figure shows the IO device based on the ET 200SP HA distributed I/O system in its overall configuration (supply
voltage and grounding concept) when supplied from a TN-S network.
Reference for the figure
①
②
② / ③
ET 200SP HA Distributed I/O System
A5E52222765-AB, 11/2024
EN / IEC 60364
Main switch
Galvanic isolation by transformer
recommended
Single-pole protection of circuits Load power circuit
EN / IEC 60204
Disconnector
Galvanic isolation by
transformer recommended
• With grounded secondary
circuit: single-pole
protection
• otherwise: Secure all pins
Protective measures and
areas of applications
Shutdown device
for controllers, signal
transmitters and actuators
Disconnector / protection
element
for load power supply for
AC load circuits with more
than five electromagnetic
devices
Short-circuit / overload
protection:
In groups for sensors and
actuators
49