{"product_id":"schneider-electric-990nad23000-modicon-automation-platform-modbus-plus-junction-box","title":"Schneider Electric 990NAD23000 Modicon Automation Platform Modbus Plus Junction Box","description":"\u003cp\u003eConfigured for physical bus segment termination and node coupling in Modbus Plus network structures, the \u003cstrong\u003eSchneider Electric 990NAD23000\u003c\/strong\u003e (\u003cstrong\u003e990NAD23000\u003c\/strong\u003e Junction Box) provides direct physical\/electrical execution. The component functions as an IP20 passive drop connection hardware assembly designed to link Programmable Logic Controller (PLC) nodes across legacy and active control architectures. It incorporates integral line termination circuitry to maintain impedance matching across differential transmission media without requiring active external signal conditioning units.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBase Part Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTermination Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eIngress Protection Rating\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSupported Automation Platforms\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e990NAD23000\u003c\/td\u003e\n\u003ctd\u003eLine Terminal Integrated\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003ctd\u003eModicon Quantum, Premium, TSX Micro, Momentum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003e990NAD23000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSchneider Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFrance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e114 mm x 55 mm x 26 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\u003ePassive (0 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Category\u003c\/td\u003e\n\u003ctd\u003eConnection Accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevice Type\u003c\/td\u003e\n\u003ctd\u003eJunction Box with Line Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Protocol\u003c\/td\u003e\n\u003ctd\u003eModbus Plus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Protection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Tool Requirement\u003c\/td\u003e\n\u003ctd\u003ePart Number 043509383\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd\u003eSet of 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Communication and Deterministic Network Interfaces\u003c\/h3\u003e\n\u003cp\u003eThe module interfaces with Modicon Quantum, Premium, TSX Micro, and Momentum automation platforms, managing signal routing across RS-485 based Modbus Plus token-passing networks. The internal line terminal suppresses high-frequency reflections across the bus interface, preventing signal distortion at baud rates characteristic of deterministic Modbus Plus physical layers. Proper connection integrity minimizes packet drop rates and bus re-transmission latencies caused by trace mismatch or improper shield grounding paths across multi-node drop topologies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 990NAD23000 junction box require external DC control power to operate?\u003c\/p\u003e\n\u003cp\u003eA: No. The unit functions as a passive physical layer interconnection device containing internal passive line termination components, requiring no auxiliary power supplies.\u003c\/p\u003e\n\u003cp\u003eQ: What specific wiring tool is specified for conductor installation on this assembly?\u003c\/p\u003e\n\u003cp\u003eA: Wire termination requires the standard Schneider Electric tool part number 043509383 to secure field conductors to the internal terminal blocks without damaging internal contacts.\u003c\/p\u003e\n\u003cp\u003eQ: Can this junction box be installed in outdoor unsealed environments without an enclosure?\u003c\/p\u003e\n\u003cp\u003eA: No. The unit carries an IP20 protection rating, requiring installation inside a protective enclosure or panel that shields against ambient moisture, conductive dust, and free water.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the control cabinet is powered down before routing shielded twisted-pair Modbus Plus cables into the junction box.\u003c\/li\u003e\n\u003cli\u003eStrip network cable jackets using tool 043509383, ensuring signal conductors and drain wires are exposed to correct specifications without nicking the copper strands.\u003c\/li\u003e\n\u003cli\u003eConnect signal lines to designated terminal pins, ensuring the internal line termination resistor remains configured for end-of-line bus nodes.\u003c\/li\u003e\n\u003cli\u003eSecure the shield wire directly to the internal grounding terminal to ensure low-impedance high-frequency noise dissipation to the main DIN-rail ground ground plane.\u003c\/li\u003e\n\u003cli\u003eMount the assembly securely inside an enclosure meeting minimum IP54 standards if ambient dust or corrosive airborne agents are present.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Schneider","offers":[{"title":"Default Title","offer_id":50023174602994,"sku":"990NAD23000","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/990NAD23000.jpg?v=1788509998","url":"https:\/\/www.petrospare.com\/products\/schneider-electric-990nad23000-modicon-automation-platform-modbus-plus-junction-box","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}