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Siemens SIMATIC HMI - Page 234

Siemens SIMATIC HMI
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Markings and symbols
B.1 Safety-relevant symbols
Comfort Panels
234 Operating Instructions, 08/2018, A5E36770603-AC
Symbol
Meaning
Reference
Protection class III, supply only with protective low voltage
(SELV/PELV)
IEC 60417-1-5180
"Class III equipment"
Only for industrial applications and indoor areas (control cabinet)
Install in control cabinet only
Devices approved for Ex Zone 2 in a control cabinet with min. IP54
Devices approved for Ex Zone 22 in a control cabinet with min. IP6x

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