Siemens SIMATIC IPC PX-39A - Page 83

Technical specifications
8.2 General technical specifications
SIMATIC IPC PX-39A
Operating Instructions, 08/2022, A5E51699601-AA
83
Safety
Protection class
Protection class I to IEC 61140
Degree of pollution
Device is designed for environments with pollution degree 2
Transient overvoltages
Device is designed for connection to supply with overvoltage category II (transient
overvoltages up to 2500 V)
Safety specifications
• IEC 61010-2-201
• EN 61010-2-201
• DIN EN 61010-2-201
• UL 61010-2-201
• CSA C22.2 No 61010-2-201
1
The device may only be connected to a 24 V DC power supply that meets the require-
ments for safe extra
-low voltage (SELV/PELV) in accordance with the IEC/UL/EN/DIN-EN
61010-2-201 standard (see section "Connecting the 24 V DC power supply (Page 46)").
2
not evaluated by UL