{"product_id":"sr3b261fu-schneider-electric-zelio-logic-smart-relay-controller","title":"SR3B261FU Schneider Electric Zelio Logic Smart Relay Controller","description":"\u003ch3\u003eEngineering Architecture \u0026amp; Core Identification\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSR3B261FU\u003c\/strong\u003e compact controller represents a versatile modular smart relay from the \u003cstrong\u003eSchneider Electric\u003c\/strong\u003e Zelio Logic series. Engineered for small-scale automation logic, the \u003cstrong\u003eSR3B261FU\u003c\/strong\u003e features an integrated LCD display, real-time clock, and flexible AC power handling, making it a reliable solution for independent machine control and building management.\u003c\/p\u003e\n\u003ch3\u003eTechnical Performance Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Brand\u003c\/strong\u003e: \u003cstrong\u003eSchneider Electric\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ Part Designation\u003c\/strong\u003e: \u003cstrong\u003eSR3B261FU\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series \u0026amp; Type\u003c\/strong\u003e: \u003cstrong\u003eZelio Logic\u003c\/strong\u003e Modular Smart Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal I\/O Capacity\u003c\/strong\u003e: 26 I\/O points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Inputs\u003c\/strong\u003e: 16 AC inputs (including 6 configurable analog inputs for 100-240V AC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Outputs\u003c\/strong\u003e: 10 heavy-duty relay outputs (rated 5 A per output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage Range\u003c\/strong\u003e: 100-240V AC (85-264V operational window, 50\/60 Hz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming Capacity\u003c\/strong\u003e: 240 ladder lines or 500 FBD function blocks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHuman-Machine Interface\u003c\/strong\u003e: Integrated LCD display with multi-direction navigation buttons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Build \u0026amp; Mounting\u003c\/strong\u003e: 35 mm DIN rail mount, dimensions 90 x 124.6 x 59.5 mm, weight 0.30 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Lifespan\u003c\/strong\u003e: 10,000,000 mechanical cycles, 500,000 electrical cycles (AC-12, 230V 1.5A)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDeployment Workflow \u0026amp; Configuration Protocol\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN Rail Installation\u003c\/strong\u003e: Snap the \u003cstrong\u003eSR3B261FU\u003c\/strong\u003e securely onto standard 35 mm industrial rails inside control enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Wiring\u003c\/strong\u003e: Connect 100-240V AC supply lines directly to terminal blocks, ensuring proper grounding and line protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic Programming\u003c\/strong\u003e: Develop control logic using Zelio Soft software, uploading via programming cable or modifying parameters directly via the front LCD panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtension Expansion\u003c\/strong\u003e: Attach modular communication or I\/O expansion modules to the side bus connector if extended control points are required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capability \u0026amp; Operational Efficiency\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time System Monitoring\u003c\/strong\u003e: Front LCD screen displays live I\/O states, system time, and custom diagnostic text messages without requiring a connected PC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eError Flag Tracking\u003c\/strong\u003e: Built-in software registers track logic faults, timer overflows, and communication dropouts across extension blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Status Audit\u003c\/strong\u003e: Mechanical cycle ratings allow engineers to estimate wear and schedule preventive replacements before contact welding occurs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Machinery \u0026amp; Industrial Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC Control Panels\u003c\/strong\u003e: Air handling units, boiler sequencing, and chiller plant automation systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Treatment Skids\u003c\/strong\u003e: Small municipal pump stations, chemical dosing units, and automated valve control loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging \u0026amp; Conveyor Lines\u003c\/strong\u003e: Compact sorting systems, material handling lifts, and automated gate interlocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty Protection \u0026amp; Global Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Timelines\u003c\/strong\u003e: Orders are processed, tested, and dispatched within 24-48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Carriers\u003c\/strong\u003e: Secure shipping supported via FedEx, UPS, and DHL network channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage\u003c\/strong\u003e: Fully backed by a 12-month manufacturer defect warranty from the date of purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do the configurable analog inputs function on the AC-powered SR3B261FU unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Out of the 16 digital AC inputs, 6 can be configured to process analog signals, allowing direct connection of standard sensors without requiring dedicated analog expansion cards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can technicians modify ladder logic programs directly on the SR3B261FU hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the integrated LCD screen and navigation buttons permit users to adjust parameters, view error states, and tweak basic ladder lines on-site.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What prevents contact degradation when driving inductive loads with the relay outputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Installing external RC snubbers or flyback diodes across inductive coils protects the 5 A relay contacts from arcing and extends electrical lifespan.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is an external power supply required to run the real-time clock during power outages?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The smart relay includes an internal backup capacitor\/battery mechanism to maintain real-time clock operation during brief power interruptions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are units supplied by Global PLC Spare HUB fully verified original equipment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Global PLC Spare HUB supplies authentic industrial automation hardware subjected to strict functional testing and protected by our 12-month warranty.\u003c\/p\u003e\n\u003ch3\u003eExpert Selection Guide \u0026amp; Global PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection Checklist\u003c\/strong\u003e: Verify your total input\/output count, voltage type (AC vs DC), and expansion needs before specifying smart relays for machine builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e: Field experience shows that inductive load spikes are the leading cause of premature relay contact failure. Utilizing protective suppression circuits alongside robust controllers like the \u003cstrong\u003eSR3B261FU\u003c\/strong\u003e ensures multi-year operational reliability in demanding industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SR3B261FU.png?v=1789718968\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":45467748106422,"sku":"SR3B261FU","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SR3B261FU-3.jpg?v=1789718454","url":"https:\/\/www.plcsparehub.com\/products\/sr3b261fu-schneider-electric-zelio-logic-smart-relay-controller","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}