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IS421ESWBH1A - IONet Ethernet Switch Module is available in stock which ships the same day.
IS421ESWBH1A - IONet Ethernet Switch Module comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: IS421ESWBH1A
Manufacturer: General Electric (GE)
Series: Mark VIe / Mark VIeS
Device Type: Unmanaged Industrial Ethernet Switch
Network Ports: 8 RJ45 Copper Ports
Port Speed: 10/100 Mbps (Auto-negotiating)
Network Type: IONet (Internal Optical Network)
Input Voltage: 18–30 VDC (24 VDC Nominal)
Current Draw: 0.5A Maximum
Hardware Revision: H1A
Mounting: Integrated DIN-rail Mounting
Status Indicators: Link/Activity and Speed LEDs per port
Operating Temp: -30 °C to +65 °C (-22 °F to +149 °F)
Availability: In Stock
Origin: United States
FUNCTIONAL DESCRIPTION:
IS421ESWBH1A is an IONet Ethernet Switch Module manufactured and designed by General Electric as part of the Mark VIeS Series used in GE Distributed Turbine Control Systems. It utilizes a store-and-forward switching architecture with dynamic MAC address learning, enabling wire-speed frame processing and efficient traffic filtering across all ports. Supporting IEEE 802.3/802.3u standards, the switch operates in full-duplex mode to eliminate collisions and optimize bandwidth utilization. It also incorporates VLAN tagging (802.1Q) and Class of Service prioritization (802.1p), allowing segregation and prioritization of mission-critical control traffic to ensure low latency and minimal jitter in real-time applications.
The module serves as a high-reliability communication backbone, interconnecting controllers, I/O modules, and HMI systems using TCP/IP-based industrial protocols such as Modbus TCP and proprietary IONet messaging. It supports redundant network topologies to enhance availability and fault tolerance, ensuring continuous operation in critical turbine environments. Built with ruggedized hardware, wide temperature tolerance, and fanless cooling, along with redundant 24–28 VDC power inputs
PLUG-AND-PLAY SIMPLICITY
The Ethernet Switch Module requires no complex software configuration. Each of its 8 ports supports auto-negotiation and auto-MDI/MDIX crossover, allowing for immediate integration into the IONet layout. The front panel includes intuitive LED indicators that allow maintenance teams to verify link status and network traffic at a glance, simplifying the troubleshooting of communication faults within the cabinet. It serves as a high-reliability node in this network. Unlike standard commercial switches, it is optimized for the deterministic timing required in turbine control, ensuring that critical sensor data and actuator commands are delivered with minimal latency.
WHY BUY FROM WOC:
World of Controls supports the network integrity of your GE Speedtronic systems by offering the IS421ESWBH1A in both UNUSED and REBUILT conditions. Every switch is rigorously tested for port throughput, packet loss, and power stability to ensure it meets original GE performance standards. We maintain a large inventory of Mark VIe networking hardware to prevent system downtime. With global logistics and 24/7 technical expertise, WOC is your dependable partner for GE industrial networking components.
What is the GE IS421ESWBH1A?
The IS421ESWBH1A is an 8-port industrial Ethernet switch used to build the IONet communication network within GE Mark VIeS control systems.
Can I use a standard office Ethernet switch instead of the ESWB?
While a standard switch might physically connect the devices, it is not recommended. The IONet Ethernet Switch Module is specifically rated for industrial temperatures, vibration, and EMI levels. Standard switches often lack the deterministic reliability and ruggedness required for mission-critical turbine protection.
What power source is required for this switch?
The switch operates on standard industrial 24 VDC (acceptable range 18-30 VDC). It typically draws power from the cabinet’s internal power distribution system.
Does this switch support fiber optic connections?
The IONet Ethernet Switch Module is a copper-only switch with 8 RJ45 ports. If your network requires fiber optic segments for long-distance runs or electrical isolation, you would typically pair this switch with a media converter or use a different ESWB model that features SFP or fiber ports.
What do the LEDs on the front panel indicate?
Each port has LEDs that indicate Link (is the cable connected and the device on), Activity (is data moving), and Speed (10 Mbps vs. 100 Mbps). This allows for rapid visual diagnosis of network health.
