Safety When Connecting (Devices Without Nec Class 2) - Siemens Simatic RTU303xC Series Operating Instructions Manual

Wall mounting is only permitted if the requirements for the housing, the installation
regulations, the clearance and separating regulations for the control cabinets or housings
are adhered to. The control cabinet cover or housing must be secured so that it can only be
opened with a tool. An appropriate strain-relief assembly for the cable must be used.
3.1.4

Safety when connecting (devices without NEC Class 2)

Safety notices for operation with a power supply not complying with NEC Class 2
If you operate the device in a control cabinet, you can use a power supply that does not
comply with NEC Class 2. When connecting up the device, keep to the safety notices listed
below.
Safety extra low voltage
The device is designed for operation with a directly connectable safety extra-low voltage
(SELV) according to UL/IEC 61010-1 and UL/IEC 61010-2-201 whose output power
corresponds to "Limited Energy" according to UL/IEC 61010-1.
RTU303xC
Operating Instructions, 06/2019, C79000-G8976-C382-06
WARNING
WARNING
Connecting up, installation, commissioning
3.1 Important notes on using the device
65