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Help CenterGE IS420ESWBH2A Non-hosted Industrial Ethernet (IONet) Switch
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GE IS420ESWBH2A is an unmanaged industrial Ethernet (IONet) switch equipped with 16 electrical ports and 2 optical ports. It supports dual redundant power supplies, wide-temperature operation and high anti-interference capability. It is specially designed for real-time control networks of critical rotating equipment such as gas turbines and steam turbines, ensuring highly reliable and low-latency data communication.
1. Positioning and System Relationship
System Affiliation
Part of GE’s industrial automation product portfolio, model IS420ESWBH2A, classified as an unmanaged industrial Ethernet switch in the ESWB series. It is exclusively compatible with the GE Mark VIe / Mark VIeS Speedtronic control system and serves as a core communication component of the IONet control network. It is DIN‑rail mounted and cannot operate independently; it must be integrated into the Mark VIe system architecture.
Core Role
Positioned as the network communication hub of the Mark VIe system, its core responsibilities:
Provide 16 channels of 10/100Base-TX electrical ports and 2 channels of 100Base-FX optical ports to realize high-speed interconnection between controllers, I/O modules, HMIs and remote drops
Comply with IEEE 802.3, 802.3u and 802.3x standards, supporting auto-negotiation, flow control and MDI/MDIX auto-sensing for plug-and-play operation
Dual 24VDC redundant power supply to ensure uninterrupted power to the network
Industrial-grade design suitable for power generation and heavy‑industry environments with high temperature, high humidity, strong vibration and strong electromagnetic interference
Built-in 256KB buffer and support for 4K MAC addresses to ensure stable forwarding of multicast and broadcast packets
Mounting Position
DIN‑rail mounted for use in standard industrial control cabinets. The front of the module is equipped with 16 RJ45 electrical ports, 2 LC optical ports and LED status indicators. Dual power input terminals are located on the side. The unit features an all-metal housing with vented heat dissipation to enhance anti-interference and thermal performance.
System Architecture
Integrated into the Mark VIe control network chain:Primary / Standby Mark VIe controllers → IS420ESWBH2A switch → Local I/O racks / Remote RIO drops / HMI / SCADA systems
Local devices are connected via electrical ports, and remote drops are extended via optical ports. Dual redundant power supplies ensure high availability of the link, forming a real-time control communication closed loop of Controller – Switch – I/O.
2. Functions and Technical Features
1. Abundant Port Configuration for Flexible Networking
Electrical ports: 16 × 10/100Base-TX RJ45, supporting 10/100Mbps auto-negotiation, full/half-duplex adaptation and MDI/MDIX auto-crossover
Optical ports: 2 × 100Base-FX multi-mode fiber, LC interface, transmission distance up to 2km, suitable for long-distance and high-interference scenarios
RJ45 durability: industrial-grade connectors supporting more than 200 insertions, adaptable to frequent on-site wiring
2. Highly Reliable Redundant Design
Dual redundant power supplies: 2 independent 24/28VDC inputs (±10%), with seamless switchover without interruption upon failure of either supply
Fanless cooling: passive heat dissipation via full-metal housing, no moving parts, MTBF > 500,000 hours
Anti-interference protection: compliant with G3 corrosion resistance, Class I Div 2 / ATEX Zone 2 hazardous area certifications, ESD 8kV air / 4kV contact
3. Industrial-Grade Performance and Environmental Adaptability
Switching buffer: 256KB port buffer to optimize multicast/broadcast traffic and reduce packet loss
MAC address table: 4K address capacity supporting multiple connected devices
Operating temperature: -40°C ~ +70°C, storage temperature -40°C ~ +85°C
Vibration resistance: 5g @ 10–500Hz, suitable for vehicle-mounted, shipboard and industrial vibration environments
Power consumption: ≤10W, low energy use and low heat generation
4. Status Monitoring and Diagnostics
Port LEDs: dual-color indicators per port showing Link, Act (activity), speed (10/100M) and duplex mode
Power LED: PWR steadily lit indicates normal power supply; off indicates power fault
Fault silence: automatic isolation of abnormal ports without affecting overall network operation
3. Technical Specifications
Product Identification
Model: GE IS420ESWBH2A
Brand: General Electric (GE)
Series: Mark VIe / ESWB Series
Type: Unmanaged Industrial Ethernet Switch (IONet Switch)
Mounting: DIN rail
Core Parameters
Electrical ports: 16 × 10/100Base-TX RJ45
Optical ports: 2 × 100Base-FX multi-mode LC, 100Mbps
Power supply: 24/28VDC ±10%, dual redundant
Power consumption: max. 10W
Buffer: 256KB
MAC addresses: 4096
Standards: IEEE 802.3, 802.3u, 802.3x
Transmission distance: 2km over multi-mode fiber; 100m over twisted-pair cable
Physical and Environmental
Dimensions: approx. 188mm × 86mm × 56mm
Weight: approx. 0.9kg (2 lbs)
Operating temperature: -40°C ~ +70°C
Storage temperature: -40°C ~ +85°C
Humidity: 5%–95% RH (non-condensing)
Protection: IP20 (housing), G3 corrosion resistance
Compatibility
Compatible with: GE Mark VIe, Mark VIeS safety control systems
Supports: all Mark VIe controllers, IONet I/O, remote RIO drops, HMI/SCADA
Incompatible with: non-GE Mark VIe series control systems
4. Compatible Systems and Supporting Components
Required System Components
Mark VIe / Mark VIeS controller (e.g. IC698CPE030)
Standard industrial control cabinet (with DIN rail)
24/28VDC redundant power supply (≥10W)
Cat5e/Cat6 shielded network cables, multi-mode fiber (LC-LC)
2A slow-blow fuse (on power side)
Optional Accessories
Fiber terminators, surge protectors (for high-interference sites)
Identical IS420ESWBH2A units (for network redundancy)
Industrial fiber transceivers (to extend long-distance links)
5. Application Scenarios
Power generation industry: control networks for gas turbines, steam turbines and combined-cycle units, ensuring real-time communication for speed governing, protection and excitation systems
Petrochemical industry: safety control for large compressors, pump sets and reaction vessels, suitable for hazardous areas and corrosive environments
Metallurgy: control networks for blast furnaces, converters and continuous casters, resistant to high temperature, heavy dust and strong vibration
Energy and heavy industry: key production lines including hydropower, wind power, paper and cement, ensuring uninterrupted network for continuous production
Offshore platforms: turbine monitoring on offshore drilling and production platforms, adaptable to high humidity, salt spray and rolling conditions
6. Notes
The module must be mounted on a standard DIN rail and securely fastened to avoid poor contact caused by vibration.
Use only dual redundant 24/28VDC power supplies. Verify polarity before wiring; overvoltage or reverse connection will damage the unit.
Use shielded twisted-pair cables for electrical ports with single-segment length ≤100m. Use 62.5/125μm multi-mode fiber for optical ports, with clean, dust-free LC connectors.
Installation and wiring must be performed with power disconnected. Use an ESD wristband to prevent electrostatic damage to chips.
Signal isolators and surge protectors must be installed in high-interference areas (near inverters, high-voltage cabinets), with proper earthing of the control cabinet.
Do not use in non-Mark VIe systems. Incompatible with PLC networks from other brands or series such as Premium and M340.
Regularly inspect port status, LED indicators, wiring tightness and ventilation openings, and remove dust to ensure long-term stable operation.
Use only identical IS420ESWBH2A modules for replacement. Verify network connectivity and port status after replacement.
Store in a dry, ventilated environment free of corrosive gases, with temperature maintained between -40°C and +85°C.
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