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The GE IS420ESWBH3A is an industrial unmanaged Ethernet 10/100 IONet switch from the ESWB series, purpose-built for the GE Mark VIe and Mark VIeS Speedtronic turbine control systems. As a high-reliability 16-port copper-only switch, the GE IS420ESWBH3A provides the deterministic, low-latency network backbone required for real-time communication between Mark VIe controllers, I/O packs, and other distributed devices over IONet. With 16 ports of 10/100Base-TX RJ-45, auto-negotiation, full/half-duplex support, and HP-MDIX, the GE IS420ESWBH3A ensures seamless plug-and-play connectivity without configuration. It features redundant diode-OR’d 24/28 VDC power inputs, extensive per-port status LEDs, and a robust convection-cooled design suitable for harsh turbine environments. The GE IS420ESWBH3A is DIN-rail mountable and widely used in gas, steam, and wind turbine applications where high availability and fault-tolerant networking are essential. Maintenance teams and system integrators trust the GE IS420ESWBH3A for its proven MTBF, hazardous location certifications, and straightforward integration into Mark VIe IONet architectures. Overall, the GE IS420ESWBH3A delivers reliable, interference-free Ethernet switching critical for safe and efficient turbine operation.

Model,GEIS420ESWBH3A

Manufacturer,General Electric (GE Vernova)

Series,Mark VIe / Mark VIeS Speedtronic

Product Type,16-Port Unmanaged Industrial IONet Ethernet Switch (ESWB)

Copper Ports,"16 × 10/100Base-TX, RJ-45"

Fiber Ports,None

Standards,"IEEE 802.3, 802.3u, 802.3x"

Auto-Negotiation,"10/100 Mbps, full/half duplex, HP-MDIX"

Buffer / MAC Addresses,"Minimum 256 KB buffer, 4K MAC addresses"

Power Requirements,"24/28 VDC, 1 A max; dual redundant inputs (Diode-OR’d)"

Power Connector,Phoenix Contact MC 1.5/S-STF-3.81 (qty 2)

Operating Temperature,-40°C to +70°C (-40°F to +158°F)

Storage Temperature,-40°C to +85°C (-40°F to +185°F)

Cooling,Convection cooled

Mounting,DIN-rail (with separately ordered clip)

Dimensions (H × W × D),18.8 × 8.6 × 5.6 cm (7.40 × 3.40 × 2.20 in)

Additional Features,"Per-port two-color LEDs (Link, Activity, Duplex, Speed), Power LED, G3 compliant, HazLoc rated (Class 1 Div 2, Zone 2, ATEX)"

Mount the GE IS420ESWBH3A on the DIN rail in the Mark VIe control cabinet using the appropriate GE mounting clip (parallel or perpendicular orientation).

Connect redundant 24/28 VDC power sources to the two Phoenix Contact terminals (TB1 and TB2) for diode-OR redundancy.

Connect Cat 5e UTP cables from the 16 RJ-45 ports to Mark VIe controllers, I/O packs, or other IONet devices.

Apply power and verify the power LED illuminates and all required port LEDs show proper link/activity status.

Confirm network communication through the Mark VIe ToolboxST or HMI diagnostics (no configuration needed for this unmanaged switch).

Monitor per-port LEDs during turbine operation for any link faults or activity issues.

Periodically check IONet health statistics in the control system to ensure low-latency, deterministic performance.

De-energize all power sources before installing or servicing the GE IS420ESWBH3A to avoid electrical hazards.

Use proper ESD protection when handling the switch to prevent damage to internal electronics.

Select and install the correct DIN-rail mounting clip (e.g., 259B2451BVP1 or BVP4) and secure the switch firmly to withstand vibration.

Use only shielded or high-quality Cat 5e cables; route Ethernet cables separately from high-voltage power lines to minimize EMI.

Ensure dual power supplies are connected with correct polarity and sufficient current capacity for the entire IONet network.

Verify adequate cabinet ventilation for convection cooling and maintain ambient temperature within -40°C to +70°C.

After installation, perform a visual inspection of all cables and LEDs, then run full IONet diagnostics before commissioning the turbine.

Observe the power LED and all 16 port LEDs daily on the GE IS420ESWBH3A for normal link, activity, duplex, and speed indications.

Monitor Mark VIe system diagnostics and alarm logs for any IONet communication faults, packet errors, or switch-related issues.

Check cabinet temperature and ensure proper airflow around the convection-cooled switch.

Inspect Ethernet cables and RJ-45 connectors weekly for looseness, damage, or signs of corrosion.

Clean dust from the switch housing and vents (power off) using low-pressure compressed air every 1–3 months depending on environment.

Periodically verify redundant power supply health by monitoring voltage at the terminals and testing failover if possible.

Review network statistics (latency, packet loss) via ToolboxST during scheduled maintenance to confirm the GE IS420ESWBH3A meets real-time IONet requirements.

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Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

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How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.