{"product_id":"schneider-b351-discrete-input-module","title":"Schneider B351 Discrete Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eSchneider B351\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eB351\u003c\/strong\u003e 115VAC discrete input module, operates as a dedicated hardware component for converting 115 VAC field discrete signals into digital logic states within Modicon PLC processing racks.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel Suffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eInput Points\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eConnection Method\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eB351\u003c\/td\u003e\n\u003ctd\u003e115 VAC\u003c\/td\u003e\n\u003ctd\u003e8 Channels\u003c\/td\u003e\n\u003ctd\u003eScrew Terminals\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 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\u003eB351\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSchneider\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\u003e1.20 lbs (0.54 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Modicon 300 Series Rack Slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC backplane bus load (150 mA typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Nominal Voltage\u003c\/td\u003e\n\u003ctd\u003e115 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e85 VAC to 132 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e8 independent circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit Isolation\u003c\/td\u003e\n\u003ctd\u003e1500 VAC channel-to-backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated screw terminal strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual Diagnostics\u003c\/td\u003e\n\u003ctd\u003eField-side LED status indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity \u0026amp; I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eEngineered for industrial control environments, the Schneider B351 delivers optocoupler-based electrical isolation between high-voltage 115 VAC field circuits and low-voltage internal CPU backplane logic. The 8-channel input array features transient voltage suppression on each circuit to filter line noise, inductive kickback, and false switching states. Integrated field-side LED status indicators provide immediate visual verification of active input conditions, while deterministic backplane bus scanning ensures rapid status transfer to the central processor.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the Schneider B351 handle DC input voltages?\u003c\/p\u003e\n\u003cp\u003eA: No, the B351 is designed specifically for 115 VAC discrete input signals and should not be wired to DC power sources.\u003c\/p\u003e\n\u003cp\u003eQ: Are individual channels on the B351 optically isolated?\u003c\/p\u003e\n\u003cp\u003eA: Yes, all eight 115 VAC input circuits feature optocouplers providing up to 1500 VAC isolation between field signals and internal PLC backplane logic.\u003c\/p\u003e\n\u003cp\u003eQ: Does replacing a faulty B351 require re-wiring field conductors?\u003c\/p\u003e\n\u003cp\u003eA: Field connections attach directly to screw terminals; wiring must be disconnected from the terminal strip during module replacement after shutting down rack power.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eEnsure all main rack AC supply and field circuit power sources are fully de-energized prior to installing or removing the B351 module. Mount the module firmly into its designated slot on the Modicon rack structure until locking mechanisms are securely engaged. Strip 115 VAC field wiring to recommended length and secure conductors to the screw terminal block, ensuring proper torque to avoid loose contacts. Route high-voltage AC cables away from low-voltage DC communication lines to prevent electromagnetic interference.\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":66832120053875,"sku":"B351","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/B351_Cocoai.jpg?v=1791615203","url":"https:\/\/www.dcssupplier.com\/products\/schneider-b351-discrete-input-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}