IEC 60079-11 Revised
IEC 60079-11:1976
Electrical apparatus for explosive gas atmospheres - Part 11: Construction and test of intrinsically-safe and associated apparatus
Gives requirements for the design, construction, testing, and marking of electrical apparatus and electrical systems with type of protection
CHFÂ 115.-
A more recent version of this publication exists:
IEC 60079-11:2023/ISH3:2024