{"product_id":"foxboro-a2h124-24fx-p0973bj-managed-ethernet-switch","title":"Foxboro A2H124-24FX P0973BJ Managed Ethernet Switch","description":"\u003ch2\u003eFoxboro A2H124-24FX P0973BJ Managed Ethernet Switch\u003c\/h2\u003e\n\u003cp\u003eConfigured for deterministic data routing and optical signal distribution in Foxboro I\/A Series networks, the \u003cstrong\u003eFoxboro A2H124-24FX P0973BJ\u003c\/strong\u003e (\u003cstrong\u003eA2H124-24FX\u003c\/strong\u003e Managed Ethernet Switch) provides direct physical\/electrical execution.\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\u003eA2H124-24FX P0973BJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\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\u003e0.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e102 x 102 x 152 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMax 8.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort Count\u003c\/td\u003e\n\u003ctd\u003e24 x fiber optic ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB SDRAM, 32 MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC (redundant input support)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eFoxboro I\/A Series DCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\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 and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro A2H124-24FX P0973BJ\u003c\/strong\u003e manages network traffic flow across 24 fiber optic channels, isolating control nodes from ground potential differences and high-frequency electromagnetic noise. While processing high-speed digital communications across distributed control architectures, internal power isolation circuits maintain stable 24 VDC rail operation across redundant supply inputs. Channel-to-channel isolation across the optical transceivers prevents ground loops from propagating to adjacent DCS field enclosures, preserving signal integrity across long-distance fiber runs connected to remote I\/O subsystems.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the A2H124-24FX P0973BJ support dual 24 VDC power supply inputs for redundancy?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The switch module includes dual 24 VDC input terminals, allowing secondary power supply tie-in to prevent network interruption if the primary power line drops.\u003c\/p\u003e\n\u003cp\u003eQ: How does fiber optic isolation benefit the Foxboro I\/A Series architecture?\u003c\/p\u003e\n\u003cp\u003eA: Optical port interfaces eliminate electrical continuity between network nodes, providing physical galvanic isolation that stops transient voltage spikes and ground loop currents from damaging connected DCS hardware.\u003c\/p\u003e\n\u003cp\u003eQ: Can the switch be deployed in standard panel enclosures without active cooling fans?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The unit draws a maximum of 8.5 W, allowing thermal dissipation via natural convection when installed within enclosures maintained between 0 and +60 deg C.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Disconnection\u003c\/strong\u003e: Verify all 24 VDC external power sources are de-energized and locked out before wiring input terminal connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Mounting\u003c\/strong\u003e: Secure the chassis vertically to standard mounting rails or panel surfaces, ensuring structural stability before attaching heavy optical patch cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber Optic Termination\u003c\/strong\u003e: Clean all fiber connector ends with optical-grade alcohol wipes before insertion into port transceivers to prevent signal attenuation caused by dust contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundant Power Cabling\u003c\/strong\u003e: Connect independent 24 VDC power feeds to primary and secondary terminal pairs, maintaining correct voltage polarity across both inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Wire Attachment\u003c\/strong\u003e: Fasten a low-impedance ground wire from the chassis ground lug directly to the enclosure master earth ground bar.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43841650425955,"sku":"A2H124-24FX P0973BJ","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/170_11adb57b-4022-4fc7-9a7e-72ed717cd173.jpg?v=1763433953","url":"https:\/\/www.autocontrolglobal.com\/products\/foxboro-a2h124-24fx-p0973bj-managed-ethernet-switch","provider":"AutoControl Global","version":"1.0","type":"link"}