Brand: GE
Model: 336A4940LBP46
Type: Industrial Ethernet Switch
Series: Mark VIe Control System
Core Function: Industrial Network Communication
Country of Origin: USA
Condition: New / Used
Availability: In Stock / Industrial Spare Part
Warranty: 12 Months

GE 336A4940LBP46 Mark VIe Industrial Ethernet Switch

The GE 336A4940LBP46 is an industrial Ethernet switch associated with the GE Mark VIe control system. It is designed to provide reliable Ethernet communication between control-system components, network devices, and associated industrial equipment.

As part of a Mark VIe control architecture, the Ethernet switch provides the network infrastructure required for communication between distributed control-system devices. Its industrial design makes it suitable for applications where stable network communication and continuous equipment operation are important.

Product Overview

The 336A4940LBP46 is intended for industrial control network applications rather than general-purpose office networking. It can be used to connect devices within a GE Mark VIe-based control environment and provide the communication path required for system-level data exchange.

For maintenance and retrofit projects, this type of switch is particularly useful when an existing Mark VIe installation requires replacement networking hardware while maintaining the original system architecture.

Main Functions

1. Industrial Ethernet network switching
2. Communication between Mark VIe control-system devices
3. Industrial network data forwarding
4. Network connectivity for distributed control equipment
5. Support for continuous industrial control applications
6. Replacement of existing Ethernet switching hardware in legacy installations

Key Technical Characteristics

Product: Industrial Ethernet Switch

Part Number: 336A4940LBP46

System: GE Mark VIe

Application: Industrial Control Network

Network Function: Ethernet Switching

Power Supply: Redundant 18–36 VDC power sources are reported for this switch configuration.

Operating Temperature: Approximately -40°C to +70°C

Architecture: Unmanaged industrial Ethernet switching

Mounting: DIN-rail or panel mounting options are reported.

Switching Technology: Store-and-forward

For exact port configuration, fiber interface type, SFP compatibility, and electrical specifications, the complete nameplate and hardware revision should be checked before replacement. Public listings for this part number are inconsistent on detailed port specifications, so these parameters should not be assumed from similar GE Mark VIe switches.

Mark VIe System Integration

The GE Mark VIe control platform is used in demanding industrial applications, particularly power-generation and turbine control. Reliable network communication is an important part of the overall control architecture.

The 336A4940LBP46 can therefore be considered a network infrastructure component within a Mark VIe installation. It is not a PLC CPU, I/O module, or turbine protection board; its primary role is Ethernet communication and network switching.

Typical Applications

1. Gas turbine control systems
2. Steam turbine control systems
3. Power generation plants
4. Industrial turbine auxiliaries
5. Mark VIe control-system networks
6. Industrial automation communication networks
7. Legacy GE control-system maintenance
8. Control-system modernization and spare-parts replacement

Replacement Considerations

When replacing a GE 336A4940LBP46, the complete part number should be matched carefully.

The Mark VIe product family contains several Ethernet switches with similar physical appearances and related part numbers. A visually similar GE switch is not necessarily a direct replacement.

Before installation, maintenance personnel should verify:

1. Complete part number and revision
2. Number and type of Ethernet ports
3. Copper/fiber interface configuration
4. SFP requirements, if applicable
5. DC power arrangement
6. Mounting method
7. Existing network topology
8. Compatibility with the installed Mark VIe system

This is especially important when the switch is being used in a turbine control network where an incorrect network component can cause communication failures or extended commissioning time.

Verification & Quality Control

For industrial spare-part procurement, the GE 336A4940LBP46 should be verified by:

1. Checking the GE part number on the nameplate.
2. Confirming the hardware revision and manufacturing label.
3. Inspecting Ethernet ports, power terminals, and connectors.
4. Checking the enclosure for physical damage or corrosion.
5. Verifying the power-input configuration.
6. Performing communication and power-on testing when testing facilities are available.
7. Providing actual product photographs before shipment when required.
8. Confirming the customer’s existing Mark VIe network configuration before dispatch.

For used or engineering-surplus units, the physical condition and electrical test status should be stated separately.

Related GE Mark VIe Network Products

GE IS420ESWBH1A Industrial Ethernet Switch
GE IS420ESWBH2A Industrial Ethernet Switch
GE IS420ESWBH3A Industrial Ethernet Switch
GE IS420ESWBH3AX Mark VIe Ethernet Switch
GE 369B1860G0026 MPU55 Network Switch
GE 369B1860G0028 Industrial Network Switch
GE 369B1860G0030 Network Switch

Why Choose GE 336A4940LBP46

The GE 336A4940LBP46 is a practical spare-part option for facilities maintaining existing GE Mark VIe control infrastructure. Keeping a compatible network switch available can help reduce troubleshooting and recovery time when an industrial control network component fails.

For legacy turbine and power-generation systems, matching the exact GE part number and hardware configuration is more important than selecting a visually similar Ethernet switch.