{"product_id":"schneider-electric-990nad23000-ip20-modbus-plus-junction-box","title":"Schneider Electric 990NAD23000 IP20 Modbus Plus Junction Box","description":"\u003ch1\u003e\nSchneider Electric 990NAD23000 IP20 Modbus Plus Junction Box\n\u003c\/h1\u003e\n\u003cp\u003eConfigured for Modbus Plus network line termination in Modicon automation platforms, the \u003cstrong\u003eSchneider Electric 990NAD23000\u003c\/strong\u003e (\u003cstrong\u003e990NAD23000\u003c\/strong\u003e junction box) provides direct physical\/electrical execution for bus interconnection and segment termination across Modicon Quantum, Momentum, TSX Micro, and Premium network nodes.\u003c\/p\u003e\n\u003ch3\u003e\nSuffix Breakdown \u0026amp; Model Matrix\n\u003c\/h3\u003e\n\u003cp\u003eNo suffix decomposition is defined in the supplied documentation. The part number 990NAD23000 is treated as a single-order configuration identifier for the Modbus Plus junction box assembly.\u003c\/p\u003e\n\u003ch3\u003e\nHardware Specifications\n\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003e\nParameter\n\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\nSpecification\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nModel\n\u003c\/td\u003e\n\u003ctd\u003e\n990NAD23000\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nBrand\n\u003c\/td\u003e\n\u003ctd\u003e\nSchneider Electric\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nOrigin\n\u003c\/td\u003e\n\u003ctd\u003e\nCN\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nWeight\n\u003c\/td\u003e\n\u003ctd\u003e\n0.23 kg\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nDimensions\n\u003c\/td\u003e\n\u003ctd\u003e\n2.600 cm x 5.500 cm x 11.400 cm\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nProtection Degree\n\u003c\/td\u003e\n\u003ctd\u003e\nIP20\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nCommunication Protocol\n\u003c\/td\u003e\n\u003ctd\u003e\nModbus Plus\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nFunction\n\u003c\/td\u003e\n\u003ctd\u003e\nNetwork junction \/ line terminal\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\nSchneider Electric Modbus Plus Network Interface Behavior\n\u003c\/h3\u003e\n\u003cp\u003eThe module operates as a passive network junction element within Modbus Plus segments, providing controlled impedance continuity and physical layer termination for distributed node communication. In Modicon network architectures, backplane and fieldbus coordination is maintained through deterministic token-passing behavior, where the junction box preserves signal integrity across daisy-chained topology segments.\u003c\/p\u003e\n\u003cp\u003eSignal routing is constrained to copper-based Modbus Plus transmission lines, with installation dependent on correct termination resistance placement at segment endpoints. Channel continuity is electrically passive, requiring no firmware or configuration layer intervention.\u003c\/p\u003e\n\u003ch3\u003e\nFrequently Asked Questions (FAQ)\n\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 990NAD23000 require external power for operation?\r\nA: No active power input is defined. The device functions as a passive Modbus Plus junction and line termination interface.\u003c\/p\u003e\n\u003cp\u003eQ: Can the unit be used in redundant Modbus Plus network topologies?\r\nA: It supports physical segmentation of Modbus Plus segments; redundancy behavior depends on the host Modicon network controller architecture, not the junction box.\u003c\/p\u003e\n\u003cp\u003eQ: Is hot-swapping supported during live Modbus Plus operation?\r\nA: No hot-swap capability is specified. Installation or removal should be performed under de-energized network conditions to maintain bus integrity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\nField Installation Guidelines\n\u003c\/h3\u003e\n\u003cp\u003eInstall the junction box on a stable DIN-rail-mounted enclosure structure within an IP20-rated cabinet environment. Ensure Modbus Plus shielded twisted pair cabling is properly terminated with correct impedance matching at segment endpoints. Maintain separation between communication lines and high-voltage conductors to reduce inductive coupling.\u003c\/p\u003e\n\u003cp\u003eCable shields should be grounded at a single reference point per segment to avoid ground loop formation. Verify continuity of the Modbus Plus trunk line after installation using standard network diagnostic tools before enabling controller communication.\u003c\/p\u003e","brand":"Schneider","offers":[{"title":"Default Title","offer_id":52762285375773,"sku":"990NAD23000","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/990NAD23000_1000.jpg?v=1787223007","url":"https:\/\/www.6gcontrols.com\/products\/schneider-electric-990nad23000-ip20-modbus-plus-junction-box","provider":"6G Controls","version":"1.0","type":"link"}