Description
Foxboro A4H254-8TX 16-Port All-Copper Industrial Layer 2 Managed Ethernet Switch
Detailed Product Information
The Foxboro A4H254-8TX is a high-performance, industrial-grade Layer 2 managed Ethernet switch purpose-built for Foxboro distributed control system (DCS) network architectures. As a member of the Foxboro A4 series Fast Ethernet switch family, it adopts a store-and-forward stackable design, delivering reliable, high-speed data transmission specifically optimized for heavy industrial process control environments. Unlike the A4H254-8F8T hybrid model, this variant is equipped with 16 full copper Ethernet ports, making it ideal for industrial network scenarios that do not require long-distance fiber optic transmission. It features a rugged industrial construction that meets strict harsh environment certification standards, supporting 24/7 non-stop continuous operation in petrochemical, power generation, chemical processing and other mission-critical industrial facilities.
A4H254-8TX
Technical Specifications
- Manufacturer: Foxboro (USA)
- Part Number: A4H254-8TX
- Product Type: Layer 2 Managed Industrial Ethernet Switch
- Port Configuration: 16 10/100BASE-TX copper Ethernet ports
- Switching Architecture: Store-and-forward stackable design
- Supported Network Protocols: Standard industrial Ethernet protocols, compatible with Foxboro I/A Series and Evo DCS network systems
- Operating Environment Rating: Industrial-grade Class G3 harsh environment certified
- Condition: Brand new in stock
- Warranty: 12 months official manufacturer warranty
- Country of Origin: USA
- Core Features: Flexible stacking capability, robust electromagnetic interference resistance, industrial-grade wide temperature operation
Compatibility & Installation Pitfalls
Compatibility
- Natively interoperable with Foxboro I/A Series and Evo distributed control system industrial network architectures
- Fully compatible with standard industrial Ethernet devices, DCS controllers, operation workstations and field control nodes
- Seamlessly integrates with Foxboro industrial network management software for full switch configuration, performance monitoring and fault diagnostics
- Matches with standard industrial control cabinet DIN rail mounting systems and 19-inch standard rack mounting accessories
- Supports stacking with other Foxboro A4 series Fast Ethernet switches to build scalable industrial network topologies
Installation Pitfalls
- Never install the A4H254-8TX in a non-ventilated enclosed space without proper heat dissipation design. Overheating will cause unexpected switch reboot and network communication interruption.
- Do not connect Ethernet cables with length exceeding the 100-meter rated maximum transmission distance directly to the ports without signal extenders. Excessively long cables will cause severe signal attenuation and data transmission errors.
- Avoid routing industrial network cables connected to this switch in the same cable tray as high-power variable frequency drive or AC motor power cables. Severe electromagnetic interference will cause intermittent network packet loss and communication dropouts.
- Never perform hot-swap replacement while critical process control loops relying on this industrial network are in automatic operation without pre-engaging the redundant network path. This action will cause momentary network disconnection and trigger unplanned process trips.
- Do not deploy A4H254-8TX switches with drastically different firmware revisions in the same stacking group. Inconsistent firmware versions will cause asynchronous network timing and unexpected communication failure during stack operation.
Standard Operating Procedure
- Pre-installation verification: Inspect the A4H254-8TX switch for physical damage on ports and power terminals, confirm the industrial control cabinet power supply output is stable within the acceptable operating range.
- Mechanical mounting: Secure the switch to the DIN rail or 19-inch standard rack in the designated control cabinet position, ensure proper ventilation space is reserved around the switch for heat dissipation.
- Field wiring termination: Connect all industrial network devices to their corresponding designated ports on the , secure all Ethernet cable connections properly and apply clear permanent labels for each port with its corresponding device tag number.
- Power-on configuration: Access the switch management interface, configure management IP address, VLAN division, port rate/duplex mode, enable STP to prevent network loops, enable port security and QoS functions as required.
- Functional validation: Verify all connected network devices can communicate normally, confirm network packet loss rate meets industrial control system requirements, test the redundant network path switchover function under simulated fault conditions.
- Commissioning handover: Save the final switch configuration file and perform secure backup, complete the network commissioning log, and confirm all industrial network communication links are operating normally before releasing the system to full operational service.
A4H254-8TX
Typical Application Scenarios
- Petrochemical refining operations: Serves as the core industrial network access switch connecting DCS controllers, operation workstations and field control nodes in refinery process units.
- Chemical processing plants: Leverages its full copper port design to build cost-effective high-reliability industrial Ethernet networks for local control areas that do not require long-distance fiber transmission.
- Power generation and utilities: Deploys in thermal power plant DCS control cabinets, providing stable high-speed network communication for boiler control systems and auxiliary equipment monitoring networks.
- Oil and gas production facilities: Adapts to the harsh operating environment in onshore control cabinets, supporting 24/7 non-stop operation for process control and safety monitoring networks.
- Industrial manufacturing facilities: Acts as a high-density copper port industrial network access hub, supporting stacking expansion to build flexible, scalable industrial Ethernet topologies for continuous production processes.
Recommended Supporting Components
- Foxboro certified industrial-grade shielded Ethernet patch cables for interference-free high-speed data transmission
- Industrial-grade DIN rail or 19-inch rack mounting kit for secure installation in standard industrial control cabinets
- Foxboro official industrial network management software for switch configuration, performance monitoring and fault diagnostics
- Redundant industrial power supply unit to ensure uninterrupted power supply for the switch
- Industrial network surge protection device to protect the switch from lightning surge and overvoltage damage
Related Part Number Recommendations
- A4H254-8F8T: Foxboro 16-port 8-copper + 8-fiber hybrid industrial managed Ethernet switch, for industrial network scenarios that require both copper and fiber connectivity
- A4H254-16F: Foxboro 16-port all-fiber industrial managed Ethernet switch, for long-distance industrial network transmission scenarios
- A4H254-24G: Foxboro 24-port Gigabit industrial managed Ethernet switch, for high-bandwidth industrial network application scenarios
- A4H254-RM: Foxboro redundant industrial Ethernet switch module, for high-availability industrial network architecture deployment
- A4 Series unmanaged industrial Ethernet switches: For cost-effective basic industrial network connection scenarios
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