{"product_id":"foxboro-p0973jp-a4-series-a4h254-8f8t-managed-ethernet-switch-layer-2","title":"Foxboro P0973JP A4-Series A4H254-8F8T Managed Ethernet Switch Layer 2","description":"\u003ch2\u003eFoxboro P0973JP A4-Series Managed Ethernet Switch\u003c\/h2\u003e\n\u003cp\u003eConfigured for hybrid copper\/fiber signal routing and Layer 2 network segmentation in Foxboro I\/A Series DCS platforms, the \u003cstrong\u003eFoxboro P0973JP\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eA4H254-8F8T P0973JP\u003c\/strong\u003e Managed Ethernet Switch, provides direct physical and electrical execution of high-speed deterministic data communication. It integrates 8 100Base-TX RJ-45 copper ports and 8 100Base-FX MT-RJ fiber optic ports alongside dedicated Gigabit uplinks to prevent data bottlenecks between field termination assemblies and control processors. The hardware incorporates industrial-grade shielding to maintain continuous packet delivery across noise-intensive automation environments.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eP0973JP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro (Schneider Electric \/ Invensys)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eA4H254-8F8T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e44.0 x 38.0 x 4.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e45 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper Ports\u003c\/td\u003e\n\u003ctd\u003e8 x 100Base-TX (RJ-45)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Ports\u003c\/td\u003e\n\u003ctd\u003e8 x 100Base-FX (MT-RJ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGigabit Uplink Ports\u003c\/td\u003e\n\u003ctd\u003e2 x 10\/100\/1000Base-T (RJ-45), 2 x 1000Base-X (SFP mini-GBIC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Architecture\u003c\/td\u003e\n\u003ctd\u003eLayer 2 Managed (VLAN segmentation, stacking support)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel isolation and galvanic protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eStandard 19-inch rack mount \/ Panel baseplate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eCE, UL, IEC 61010-1, IEC 61326 EMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro P0973JP\u003c\/strong\u003e integrates directly into Distributed Control System topologies handling high-density 4-20 mA HART loop protocol traffic and discrete field signals. Galvanic channel-to-channel isolation safeguards internal switching logic against common-mode voltage spikes, ground loops, and severe electrical noise generated by heavy industrial actuators or power switching equipment. Dedicated hardware filtering maintains low protocol conversion latencies, enabling steady pass-through of real-time HART diagnostics from smart field transmitters to upper-level EcoStruxure Foxboro DCS configuration and monitoring tools without degrading network throughput.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the switch protect lower-level Fieldbus Modules (FBMs) from noise propagation?\u003c\/p\u003e\n\u003cp\u003eA: The device utilizes embedded galvanic isolation across its internal architecture and supports full optical isolation over its 8 100Base-FX MT-RJ fiber channels. This prevents ground loops, high-voltage surges, and electromagnetic interference from traveling between remote field enclosures and central processing units.\u003c\/p\u003e\n\u003cp\u003eQ: What are the primary uplink and stacking limits for this hardware configuration?\u003c\/p\u003e\n\u003cp\u003eA: The switch includes 2 dedicated 10\/100\/1000Base-T RJ-45 ports and 2 1000Base-X SFP mini-GBIC slots. These allow non-blocking Gigabit wire-speed aggregation to central DCS control cores and facilitate physical hardware stacking for local port expansion without introducing network latency.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit horizontally using standard 19-inch rack mount brackets or secure it onto a panel baseplate within an IP54-rated external enclosure if deployed in harsh industrial environments. Maintain a minimum vertical clearance of 50 mm above and below the chassis to ensure natural convection cooling across the internal heat sink structure.\u003c\/p\u003e\n\u003cp\u003eTerminate copper connections using shielded twisted-pair (STP) Category 5e\/6 cables with standard RJ-45 connectors. Ensure continuous 360-degree shield grounding at the cable glands to prevent high-frequency noise ingress. Fiber optic runs using MT-RJ connectors must maintain a minimum bend radius of 30 mm; clean all optical interfaces with lint-free isopropyl alcohol wipes prior to insertion into the 100Base-FX ports. Verify that the ambient operating temperature remains strictly between -20 deg C and +70 deg C, and connect the primary ground chassis lug directly to the main cabinet earth ground bar with a copper conductor of at least 14 AWG.\u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43931727462490,"sku":"P0973JP","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/466_1cebc6a7-a16d-40ff-a847-879ee8aca139.jpg?v=1787906829","url":"https:\/\/www.spareoil.com\/products\/foxboro-p0973jp-a4-series-a4h254-8f8t-managed-ethernet-switch-layer-2","provider":"SpareOil Automation","version":"1.0","type":"link"}