GE industrial Ethernet switches are designed for demanding environments such as power generation, factory automation, process control, and transportation. The available functions vary by product family. Some models are unmanaged switches designed for dedicated control networks, while others provide managed networking, redundant topology support, extended-temperature operation, and enhanced security features.
Selected GE Vernova substation switches are type-tested to IEC 61850-3, while other product families, such as the Mark VIe IONet switches, are designed specifically for GE control-system communication. Their rugged construction, industrial temperature ratings, and long-term reliability help maintain stable network communication in critical infrastructure applications.
The Real Cost of Buying GE Switches from the Wrong Supplier
Industrial automation engineers face a procurement market that can be difficult to evaluate. Search online for a GE IS420ESWBH3A or a legacy industrial Ethernet switch, and you may find numerous suppliers making similar claims about product condition, authenticity, stock availability, and delivery time.
However, the information shown on a product page does not always reveal whether the supplier can provide accurate technical documentation, serial-number traceability, compatible hardware revisions, or reliable after-sales support.
What happens when a switch fails after three months? What if the hardware revision is not suitable for the installed Mark VIe system? What if the buyer requires origin or inspection documentation and the supplier stops responding?
These are genuine procurement risks in the legacy industrial automation market. Power plant maintenance teams, system integrators, and procurement managers must evaluate not only the purchase price, but also the cost of downtime, incorrect specifications, incompatible replacements, and delayed technical support.
The traditional approach of buying from the first available listing can become expensive when the product does not match the installed system.
FiberMall addresses these concerns through transparent product information, networking specialization, compatibility verification, documented inspection, and warranty support.
GE Industrial Ethernet Switches — What We Supply
FiberMall supplies selected GE, GE Vernova, and legacy GE industrial Ethernet switches used in automation, control, and utility networks. Product availability depends on the exact part number, hardware revision, condition, and sourcing channel.
Every unit is inspected before shipment and covered by FiberMall’s 12-month warranty. Where applicable, product photographs, serial-number information, inspection records, and origin documentation can be provided or confirmed during the quotation process.
Mark VIe / IONet Series — IS420ESWBH Family
The IS420ESWBH family is designed for GE Mark VIe and Mark VIeS control systems. These rugged, unmanaged industrial Ethernet switches provide low-latency 10/100 Mbps communication between controllers, I/O modules, operator stations, and other devices within the approved control-system architecture.
All models in the IS420ESWBH family provide sixteen 10/100BASE-TX copper ports. The main difference between the models is the number and type of fixed fiber-optic ports.
IS420ESWBH1A provides sixteen 10/100BASE-TX copper ports and one fixed 100BASE-FX multimode LC fiber port. It is an unmanaged switch rated for operation from −40°C to +70°C.
IS420ESWBH2A provides sixteen 10/100BASE-TX copper ports and two fixed 100BASE-FX multimode LC fiber ports. It is an unmanaged switch rated for operation from −40°C to +70°C.
IS420ESWBH3A provides sixteen 10/100BASE-TX copper ports and does not include fiber ports. It is intended for copper-only IONet connections and is rated for operation from −40°C to +70°C.
IS420ESWBH4A provides sixteen 10/100BASE-TX copper ports and one fixed 100BASE-LX10 single-mode LC fiber port. It is an unmanaged switch rated for operation from −40°C to +70°C.
IS420ESWBH5A provides sixteen 10/100BASE-TX copper ports and two fixed 100BASE-LX10 single-mode LC fiber ports. It is an unmanaged switch rated for operation from −40°C to +70°C.
These switches may be used in gas turbine control networks, steam turbine control systems, generator-related control networks, I/O communication backbones, and safety-system architectures, depending on the approved GE system design.
Because the fiber ports are built into the switch, they do not accept removable SFP transceivers.
PACSystems Industrial Ethernet Series — IC086 Models
PACSystems industrial Ethernet switches were originally offered under GE Intelligent Platforms and are now supported within Emerson’s PACSystems product portfolio. They are commonly used with PACSystems RX3i, RX7i, distributed I/O, process-control, and industrial automation networks.
The IC086 family includes both managed and unmanaged models. Port speed, fiber configuration, redundancy protocols, management functions, and power-input arrangements vary by exact part number.
IC086SLN080 is a compact unmanaged switch with eight 10/100BASE-TX copper ports. It does not provide fiber ports. The model is designed for industrial DIN-rail applications and supports redundant DC power connections.
IC086SLM082 is a managed industrial switch with eight 10/100BASE-TX copper ports and two 100/1000BASE-X SFP slots. The SFP ports allow users to select compatible 100 Mbps or 1 Gbps optical transceivers according to the supported interface, fiber type, wavelength, distance, and environmental requirements.
The IC086 family also includes fixed-fiber models.
IC086SLN042MM and IC086SLM042MM provide four 10/100BASE-TX copper ports and two fixed 100BASE-FX multimode SC fiber ports.
IC086SLN042SS and IC086SLM042SS provide four 10/100BASE-TX copper ports and two fixed 100BASE-FX single-mode SC fiber ports.
The “SLN” models are generally unmanaged, while the “SLM” models provide managed networking functions. Buyers should verify the complete part number because the abbreviated designation “SLN042” does not identify the management type or fiber configuration.
Common applications include PACSystems controller networking, distributed I/O communication, process-control LANs, industrial machine networks, SCADA connectivity, and control-room communication.
Legacy Managed Switches — WES5120 and WES5302
WES5120 and WES5302 part numbers may appear in the industrial automation aftermarket as legacy GE-related Ethernet equipment. However, port configurations and management capabilities can vary according to the full model suffix, hardware revision, and original application.
For this reason, FiberMall does not recommend selecting a WES5120 or WES5302 based only on the shortened family name.
Before quotation, the complete part number and available product documentation should be checked to confirm:
• The number and speed of copper ports
• The number and supported speed of SFP or fiber ports
• Layer 2 or Layer 3 capabilities
• Ring and redundancy protocol support
• Power-input requirements
• Operating-temperature range
• Firmware and management-interface availability
• Compatibility with the customer’s existing controller or network
Customers replacing an installed unit should provide a clear photograph of the original nameplate, full model number, hardware revision, and existing port configuration.
Multilin and Substation Ethernet Switches
GE Vernova also offers industrial Ethernet switches for utility, protection-relay, and substation communication networks under its Multilin and MultiLink product families.
These products are separate from the Mark VIe IS420ESWB IONet switches and the PACSystems IC086 series. Selected MultiLink models provide managed Ethernet functions, redundant ring protocols, industrial cybersecurity features, extended operating-temperature ranges, and IEC 61850-3 environmental compliance.
They may be used for protection-relay networking, substation automation, bay-level communication, SCADA backbones, remote terminal units, and substation HMI connectivity.
The correct model should be selected according to port speed, fiber interface, redundancy protocol, time-synchronization requirements, environmental certification, cybersecurity requirements, and the approved substation architecture.
Which GE Switch Is Right for Your System?
Not sure which model matches your control platform? The following quick-reference guidance can help narrow the selection.
For a Mark VIe turbine control system, use an IS420ESWBH model that matches the existing physical interface.
Choose the IS420ESWBH3A for copper-only connections.
Choose the IS420ESWBH1A or IS420ESWBH2A when one or two 100BASE-FX multimode LC fiber ports are required.
Choose the IS420ESWBH4A or IS420ESWBH5A when one or two 100BASE-LX10 single-mode LC fiber ports are required.
The key consideration is the exact number and type of fixed fiber ports. The IS420ESWBH3A does not have a fiber port.
For a Mark VIeS safety system, select the switch according to the approved GE network architecture, controller redundancy level, cable type, and required number of copper or fiber links.
Do not assume that one specific switch model is suitable for every Mark VIeS installation. Redundant-path requirements must be verified against the original system documentation.
For a PACSystems RX3i or RX7i network, consider an IC086 managed or unmanaged industrial switch according to the required port count and network-management functions.
A managed model such as the IC086SLM082 may be appropriate when SFP uplinks, VLANs, monitoring, or model-supported redundancy functions are required. An unmanaged model may be sufficient for a simple local control network.
For Multilin protection relays or substation automation, select a MultiLink or other utility-grade industrial switch that meets the required IEC 61850-3 environmental, redundancy, timing, and cybersecurity requirements.
Dual or redundant power inputs may improve network availability, but they must be implemented according to the switch manual and the site’s electrical design.
For legacy GE Fanuc Series 90-30 or Series 90-70 equipment, contact FiberMall for a model-specific cross-reference.
Compatibility should be checked according to the installed controller, communication module, port speed, connector type, protocol, and network topology.
Why Engineers Choose FiberMall for GE Industrial Switches
Verified Trust — Not Just a Claim
FiberMall maintains a public third-party review profile with customer feedback dating back several years. Because review scores can change over time, customers can verify the latest rating and recent feedback before placing an order.
In the industrial automation aftermarket, supplier verification matters. Buyers should check the supplier’s operating history, technical capability, warranty terms, product documentation, and after-sales response rather than relying only on a product listing.
FiberMall provides company information, technical consultation, inspection support, and warranty terms that customers can review before purchasing.
Networking Specialization
Unlike general industrial surplus dealers that sell everything from PLC modules to hydraulic components, FiberMall specializes in optical and Ethernet networking hardware.
When you ask about the fiber connection on a GE industrial switch, our team can help distinguish between:
• 100BASE-FX multimode and single-mode links
• 100BASE-LX10 single-mode links
• Fixed LC or SC fiber ports
• Removable SFP interfaces
• 100BASE-X and 1000BASE-X SFP compatibility
• Single-mode and multimode fiber
• Optical wavelength and link-distance requirements
• Industrial operating-temperature requirements
This reduces the risk of ordering an incorrect transceiver, fiber cable, or replacement switch.
Competitive Aftermarket Pricing
FiberMall sources products through verified supply channels and provides competitive pricing for industrial automation and networking hardware.
Depending on the model, products may be supplied as new original equipment, unused surplus stock, refurbished equipment, or verified replacement stock. The condition and available documentation should be clearly identified in the quotation.
Volume pricing is available for system integrators, maintenance organizations, and multi-site deployments.
12-Month Warranty on Every Unit
Every GE industrial switch sold by FiberMall is covered by a 12-month warranty unless otherwise specified in the quotation.
If a unit develops a covered fault during the warranty period, FiberMall will review the failure information and arrange repair, replacement, or another applicable remedy according to the warranty procedure.
Shipment tracking is provided when a replacement unit is dispatched.
Compatible Fiber Optics and Accessories
GE industrial switches may use fixed fiber ports, SFP slots, or copper-only interfaces. The required accessories depend on the exact switch model.
FiberMall can supply switches, optical transceivers, industrial Ethernet cables, and fiber patch cords as one complete connectivity package.
For the IS420ESWBH1A and IS420ESWBH2A, the built-in optical interfaces are 100BASE-FX multimode LC ports. These switches require duplex LC multimode fiber patch cables. A matching optical interface may also be required at the remote device.
For the IS420ESWBH3A, all sixteen interfaces are 10/100BASE-TX copper ports. It requires suitable industrial copper Ethernet cables, normally Category 5e or better.
For the IS420ESWBH4A and IS420ESWBH5A, the built-in optical interfaces are 100BASE-LX10 single-mode LC ports. These switches require duplex LC single-mode fiber patch cables. A compatible 100BASE-LX10 interface is required at the other end of the link.
For the IC086SLN080, all eight interfaces are 10/100BASE-TX copper ports, so no optical transceiver is required.
For the IC086SLM082, the two uplink ports are 100/1000BASE-X SFP slots. The selected SFP must match the port speed, wavelength, fiber type, distance, temperature rating, and device compatibility requirements.
For IC086 models with fixed SC fiber ports, the patch cable must match both the SC connector and the specified single-mode or multimode optical interface.
For legacy WES5120 and WES5302 equipment, the exact accessory requirements must be confirmed from the complete part number and original technical documentation.
FiberMall does not recommend assuming that every MSA-compliant SFP or DAC cable will work in every industrial switch. Electrical interface speed, EEPROM behavior, device firmware, temperature rating, and vendor qualification can all affect compatibility.
Using one supplier for the switch and the optical accessories provides one point of contact for product selection, compatibility support, shipment coordination, and warranty service.
FiberMall can perform model-specific SFP-to-switch compatibility testing when the required switch, transceiver, and test conditions are available.
GE Industrial Switch FAQ
Are these switches compatible with single-mode or multimode fiber?
It depends on the exact model.
The IS420ESWBH1A and IS420ESWBH2A use fixed 100BASE-FX multimode LC fiber ports.
The IS420ESWBH3A does not have fiber ports.
The IS420ESWBH4A and IS420ESWBH5A use fixed 100BASE-LX10 single-mode LC fiber ports.
IC086 models are available with copper-only interfaces, fixed single-mode or multimode 100BASE-FX interfaces, or SFP slots.
For example, the IC086SLM082 has two 100/1000BASE-X SFP slots. A supported SFP may be selected for single-mode or multimode fiber, provided that the transceiver matches the switch port speed and compatibility requirements.
Actual transmission distance depends on the optical interface, fiber type, connector loss, splice loss, optical power budget, remote equipment, and installation quality.
Do GE IS420ESWBH switches support hot-swapping during operation?
The IS420ESWBH switches should not automatically be described as hot-swappable devices.
A redundant network may allow communication to continue through an alternate path while one switch is isolated or replaced. However, network redundancy does not mean that the switch itself can be removed safely while powered.
Before replacing an IS420ESWBH switch, review the approved GE maintenance procedure, system redundancy status, site safety requirements, and lockout/tagout procedures.
Live replacement should only be performed when it is explicitly permitted by the system documentation and site procedure.
Can these switches be firmware-updated in the field?
The IS420ESWA and IS420ESWB IONet switches are unmanaged Ethernet switches. They do not provide the standard web interface, command-line interface, or SNMP management functions found on managed industrial switches.
They should not be described as user-configurable switches managed through ToolboxST unless a model-specific GE service document explicitly identifies such a procedure.
Managed PACSystems, MultiLink, or other GE industrial switches may support a web interface, CLI, SNMP, configuration files, or field firmware updates. The available functions depend on the exact model and firmware version.
Always follow the manufacturer’s official upgrade procedure. Installing an incorrect firmware image may cause a device failure or compatibility problem.
What is the operating-temperature range for GE industrial switches?
The operating-temperature range depends on the product family and exact part number.
The IS420ESWBH family is generally rated for operation from −40°C to +70°C. Its storage-temperature range may extend to +85°C, but storage temperature should not be presented as operating temperature.
Many PACSystems IC086 industrial switches are also rated for operation from approximately −40°C to +70°C, depending on the model.
Selected GE Vernova MultiLink substation switches may support an operating-temperature range of −40°C to +85°C and may be type-tested for utility and substation environments.
Always confirm the operating-temperature rating in the exact model’s datasheet before deployment.
How does FiberMall verify product authenticity and condition?
FiberMall sources industrial switches through verified supply channels and inspects each unit before shipment.
Depending on product availability and sourcing conditions, verification may include:
• Product and nameplate photography
• Serial-number recording
• Visual inspection
• Power-on testing
• Port-function testing
• Hardware-revision confirmation
• Packaging inspection
• Available origin or traceability documentation
A Certificate of Origin identifies the declared country of origin but does not, by itself, prove manufacturer authenticity. Customers requiring specific documentation should confirm the requirement before ordering.
Every supplied switch is covered by FiberMall’s applicable warranty terms.
What fiber-optic accessories should I order with my GE switch?
For an IS420ESWBH1A or IS420ESWBH2A, order duplex LC multimode fiber patch cables that match the installed fiber type.
For an IS420ESWBH4A or IS420ESWBH5A, order duplex LC single-mode fiber patch cables.
For an IS420ESWBH3A or IC086SLN080, order suitable industrial copper Ethernet cables because these models do not have fiber ports.
For an IC086SLM082, order compatible 100BASE-X or 1000BASE-X SFP transceivers according to the supported port mode. FiberMall can supply industrial-temperature-rated 100BASE-FX, 1000BASE-SX, and 1000BASE-LX transceivers where they are compatible with the selected switch.
For IC086 models with fixed SC fiber ports, order SC-to-SC, SC-to-LC, or another appropriate patch-cable configuration based on the connector at the remote device.
Before selecting any accessory, confirm:
• The complete switch part number
• Port speed
• Fixed port or removable SFP interface
• Connector type
• Single-mode or multimode fiber
• Required wavelength
• Link distance
• Operating-temperature range
• Remote-device interface
FiberMall engineers can recommend the appropriate switch, transceiver, and cable combination based on the installed equipment and link requirements.
