Product Overview
The Enterasys A2H124-24FX P0973BJ is a specialized managed fiber-optic Ethernet switch engineered for industrial control networks requiring high electromagnetic immunity and long-distance connectivity. As a member of the Enterasys SecureStack A2 series, the Enterasys A2H124-24FX P0973BJ provides 24 fixed 100BASE-FX multimode fiber ports using MT-RJ connectors, making it uniquely suited for deployment in refinery DCS cabinets, power plant boiler control rooms, and other EMI-heavy industrial environments where copper Ethernet cabling would suffer from interference and distance limitations .
The Enterasys A2H124-24FX P0973BJ occupies a critical position in the industrial network topology as an edge aggregation switch, typically interconnecting remote Foxboro FBM field I/O modules, PLC controllers, and HMI stations via multimode fiber runs. The P0973BJ suffix designates this unit as a Foxboro OEM-marked variant, factory preconfigured with QoS rules that prioritize Modbus TCP and proprietary DCS control traffic over background historian data. This integrated fiber architecture eliminates the need for standalone media converters that consume valuable rack space and introduce additional failure points .
The Enterasys A2H124-24FX P0973BJ combines Layer 2 switching capabilities with stackable architecture supporting up to eight identical switches in a single logical domain. Its dual SFP uplink slots provide hot-swappable Mini-GBIC flexibility for copper or fiber backbone connections, while the rear-panel redundant power supply connector enables connection to an external C2RPS-SYS unit for continuous operation during internal power supply failure. As a mature, field-proven platform, the Enterasys A2H124-24FX P0973BJ remains essential for maintaining operational continuity in the substantial installed base of legacy Foxboro I/A Series and industrial control networks worldwide .
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | A2H124-24FX |
| Foxboro Part Number | |
| Manufacturer | Enterasys Networks |
| Product Type | Managed Fiber Ethernet Switch (SecureStack A2 Series) |
| Fixed Fiber Ports | 24 × 100BASE-FX MT-RJ Multimode |
| SFP Uplink Slots | 2 × SFP (Mini-GBIC), hot-swappable |
| Stacking Ports | 2 × 1000BASE-T RJ45 (Ports 25-26) |
| Console Port | 1 × DB9 RS232 |
| Management | WebView, CLI, SNMP, NetSight |
| Switching Capacity | 12.8 Gbps |
| MAC Address Table | 8,000 entries |
| Protocol Support | 802.1Q VLAN, 802.1p QoS, MSTP, LACP, IGMP Snooping, Port ACL |
| Redundant Power | Rear RPS Connector (C2RPS-SYS, not PoE) |
| Operating Temperature | 0°C to 50°C |
| Form Factor | 1U Rackmount, 442 × 44 × 230 mm |
| Isolation Rating | 1500V surge isolation (fiber transceiver PCB to main board) |
