Description
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GE IS420ESWBH3A | Direct Replacement IONet Module
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Copper Ports | 16 × 10/100Base-TX RJ45 |
| Fiber Ports | None (H3A version) |
| Standards | IEEE 802.3, 802.3u, 802.3x |
| Buffer / MAC Table | Min. 256 KB / 4K addresses |
| Power Input | 24/28 VDC, dual redundant (Diode-OR’d), 1 A max |
| Auto Features | Speed, duplex, HP-MDIX |
| Cooling | Convection (fanless) |
| Mounting | DIN-rail or panel |
| Operating Temperature | –40 °C to +70 °C |
| Dimensions (H × W × D) | Approx. 18.8 × 8.6 × 5.6 cm |
| Hazardous Location Rating | Class I Div 2 / Zone 2 / ATEX |
| G3 Compliant | Yes |
4. Product Introduction (Anti-Template)
When a main controller loses network visibility and the turbine trips, the IONet fabric is usually the first place to look. The IS420ESWBH3A is the 16-port all-copper version of GE’s industrial Ethernet switch built specifically for Mark VIe and Mark VIeS systems. It buffers multicast and broadcast traffic, auto-negotiates speed and duplex, and keeps real-time control packets moving without management overhead.
Unlike the fiber-equipped H1A/H2A/H4A/H5A variants, this H3A model uses only copper RJ45 ports. Dual diode-OR’d 24/28 VDC inputs give power redundancy, convection cooling eliminates fans, and the unit mounts on DIN-rail or panel. It is required hardware for any IONet segment in a Mark VIe or safety-rated Mark VIeS installation.
GE IS420ESWBH3A | Direct Replacement IONet Module
5. QC, Procurement & Logistics SOP
- Inbound Verification – Origin is confirmed against GE manufacturing data. Port labeling, power terminals, LED function, and physical condition are photographed and logged.
- Live Rig Testing – Switch is powered from dual 24 VDC sources, each port is link-tested with Cat 5e cable, and multicast buffering behavior is verified under load.
- QA & Anti-Static Packaging – After functional pass, connectors are capped, the unit is cleaned, and it is sealed in anti-static shielding with desiccant and humidity indicator.
- Global Logistics & Export Compliance – Classified under the correct HS code for industrial network switches. Packaging is rated for air and sea freight vibration; export documentation is prepared to minimize customs delays.
GE IS420ESWBH3A | Direct Replacement IONet Module
6. Technical Pitfalls & Integration Warnings
Wrong Variant Selection – Installing an H3A (copper-only) unit where fiber uplinks are required forces later replacement. Confirm the network design needs no fiber before ordering the H3A.
Power Polarity / Redundancy Errors – The dual inputs are diode-OR’d. Reverse polarity on either input or using a single supply without checking diode behavior can leave the switch unpowered or create ground loops.
Cable Category & Length – Only Cat 5e (or better) UTP is supported. Exceeding distance limits or using damaged cables produces intermittent link drops that look like controller faults.
Mounting Orientation & Airflow – Although convection-cooled, the unit must be mounted vertically or horizontally as specified. Blocking the case or installing in a sealed enclosure without adequate free air raises internal temperature and shortens service life.
7. Frequently Asked Questions (FAQ)
What is the realistic global lead time for a verified IS420ESWBH3A?
Stock units normally ship within 1–3 business days after payment clearance. Air freight to major industrial regions typically adds 3–8 days once customs processing is complete.
How many ports does this switch have and what type?
Sixteen 10/100Base-TX copper RJ45 ports. This H3A version has no fiber ports.
Is the switch managed or unmanaged?
Unmanaged. It is a Level-1 industrial switch optimized for IONet traffic buffering and forwarding.
What power does it require?
24/28 VDC with dual redundant diode-OR’d inputs, maximum 1 A.
Can it be used in hazardous locations?
Yes. It carries Class I Division 2 / Class 2 Zone 2 / ATEX ratings when installed according to the Mark VIeS hazardous-location guidelines.
Does it need a fan?
No. The unit is convection-cooled.
Is this switch required for Mark VIe IONet?
Yes. GE specifies ESWx-series switches (ESWA or ESWB family) for all IONet connections in Mark VIe and Mark VIeS systems.
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