P543i/P545i
Where:
'II'
Equipment Group: Industrial.
'(2)G'
High protection equipment category, for control of equipment in gas atmospheres in Zone 1 and 2.
This equipment (with parentheses marking around the zone number) is not itself suitable for operation
within a potentially explosive atmosphere.
P54x1i-TM-EN-1
Chapter 2 - Safety Information
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