It uses Achilles-certified controllers and current Fieldbus technology to meet NERC version 5 Protection Reliability Standards for Critical Infrastructure. The component has eight ports with 10/100BASE-TX capability. It's one of numerous Ethernet switch models available for use with the Mark VI system. It features a conformal coating and is suitable for usage in hazardous environments. The machine can function in temperatures ranging from -40 to 158 degrees Fahrenheit.

IS420ESWAH3A switch has 8 interfaces on the front. 8 interfaces are 10/100Base-TX copper RJ45 interfaces. Usually, ESWA switches have fiber ports, which is the main distinguishing feature of switches from each other. This switch is the only one without any fiber ports. All ESWA switches are similar except that they do not have any fiber ports.