Quick fit check
Siemens 6AG1104-2BB00-2AA3 is a compact unmanaged Ethernet device – think of it as a rugged 2-port (4-port total from the modular terminal blocks) switch for 10/100 Mbit/s links. It takes 24 VDC nominal, wide input 18-32 V, and draws 0.1 A typical. No managed features, no PROFINET switch inside – just straight traffic forwarding with a 3.8 W thermal load.
Hazardous area & compliance
This variant carries ATEX II 3 G Ex nA IIT.. under KEMA 07 ATEX X, making it legal for Zone 2 gas areas. Also holds KC approval for Korea and meets EN 61000-6-4 (Class A) and EN 61000-6-2 for emissions and immunity. The enclosure is chemically resistant to commercial cooling lubricants and airborne oil/diesel droplets – a plus for machine-tool panels. No marine approvals (ABS, DNV, GL, etc.) on this order code, so skip it for shipboard use.