Product Overview
The Foxboro A4H124-24FX acts as the high-density communication backbone for the I/A Series Distributed Control System (DCS). This 100% Brand New original managed Ethernet switch provides 24 dedicated 100Base-FX fiber ports, facilitating secure and interference-free data transmission across plant-wide networks. By utilizing optical fiber, the A4H124-24FX eliminates risks associated with electromagnetic interference (EMI) and ground potential differences. It links critical controllers, operator workstations, and I/O subsystems in large-scale oil & gas, petrochemical, and power generation facilities.
Technical Specifications
| Feature | Technical Details |
| Model Number | A4H124-24FX |
| Switch Type | Managed Industrial Ethernet Switch |
| Port Configuration | 24 × 100Base-FX Fiber Ports |
| Data Rate | 100 Mbps per port (Full Duplex) |
| Form Factor | 1U Rack-mountable |
| Network Management | Support for VLANs, Traffic Prioritization, and SNMP |
| Isolation Architecture | Full Optical Isolation (EMI/RFI Immune) |
| Operating Temperature | Ruggedized for Industrial Use |
| Weight | 3.5 kg (7.7 lbs) |
| Origin | USA |
Engineering Advantages
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Total Signal Integrity: The 24-port fiber architecture provides native immunity to electrical noise. In facilities with heavy rotating machinery or high-voltage switchgear, the A4H124-24FX maintains deterministic communication where standard copper switches would fail due to data corruption.
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Deterministic Traffic Management: Advanced managed switch functions allow engineers to configure Virtual LANs (VLANs) and Quality of Service (QoS). This ensures that time-critical process control data takes priority over general maintenance traffic, preventing latency during plant upsets.
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Extended Reach for Large Facilities: 100Base-FX fiber supports distances far exceeding the 100-meter limit of copper Ethernet. This allows the integration of remote satellite equipment rooms and distant operator stations into a unified DCS mesh network.
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Durable Industrial Construction: Unlike commercial-grade switches, the A4H124-24FX utilizes high-MTBF components and a fanless or ruggedized cooling design to survive continuous operation in unconditioned control cabinets and high-vibration environments.
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Seamless I/A Series Integration: The switch firmware fully supports Foxboro industrial Ethernet standards, enabling rapid deployment within existing DCS architectures without compatibility issues or specialized third-party drivers.
FAQs
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Does the A4H124-24FX support redundant power inputs?
Standard industrial configurations for this switch series often support redundant 24V DC or dual AC power inputs to ensure network visibility remains intact even during a primary power failure.
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Which fiber connector type does this module require?
The A4H124-24FX typically utilizes standard industrial fiber connectors (such as SC or ST). Always verify your existing fiber patch cable terminations before final installation to ensure optical alignment.
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How do I configure the management features?
You can access management functions via a console port or a secure web interface. Proper setup of VLANs and redundancy protocols is recommended during the commissioning phase to maximize network reliability.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, GermanyRelated Products
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