{"product_id":"sr3b261bd-schneider-electric-zelio-logic-modular-smart-relay-26-i-o-24v-dc","title":"SR3B261BD Schneider Electric Zelio Logic Modular Smart Relay - 26 I\/O 24V DC","description":"\u003ch3\u003eEngineering Architecture \u0026amp; Modular Flexibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e\u003c\/strong\u003e is an advanced modular smart relay engineered by \u003cstrong\u003eSchneider Electric\u003c\/strong\u003e within the \u003cstrong\u003eZelio Logic\u003c\/strong\u003e series to support expanded automation architectures.\u003c\/li\u003e\n\u003cli\u003eFeaturing 16 digital inputs—with 6 fully configurable as 0-10V analog inputs—it accommodates direct sensor feedback without requiring auxiliary analog interface cards.\u003c\/li\u003e\n\u003cli\u003eGlobal PLC Spare HUB's Insight: System integrators frequently select the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e\u003c\/strong\u003e for complex OEM skids because its modular communication bus easily accommodates Ethernet (SR3NET01BD) or RS485 extension modules for remote SCADA integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConfiguration \u0026amp; Technical Specifications Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth\u003eOperational Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \u0026amp; Core Model\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eSchneider Electric\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e\u003c\/strong\u003e (Zelio Logic Modular Series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal I\/O Points\u003c\/td\u003e\n\u003ctd\u003e26 I\/O base configuration (16 digital inputs, 10 relay outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Input Features\u003c\/td\u003e\n\u003ctd\u003e6 inputs configurable for analog 0-10V signals; standard 24V DC Type 1 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Rating\u003c\/td\u003e\n\u003ctd\u003e24V DC nominal (19.2V to 30V operating window)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Output Limits\u003c\/td\u003e\n\u003ctd\u003e5 A per output channel with high mechanical and electrical endurance cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Capacity\u003c\/td\u003e\n\u003ctd\u003e240 ladder lines or 500 Function Block Diagram (FBD) processing blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Footprint\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail mounting, 90 × 124.6 × 59.5 mm (H×W×D), weight: 0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +55°C operational thermal threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eField Installation \u0026amp; Communication Wiring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e\u003c\/strong\u003e securely onto standard 35 mm DIN rails, leaving adequate side clearance for attaching communication expansion modules.\u003c\/li\u003e\n\u003cli\u003eEnsure shielded twisted-pair cables are utilized when wiring the 6 analog-configurable inputs to prevent electromagnetic interference from nearby variable frequency drives.\u003c\/li\u003e\n\u003cli\u003eGlobal PLC Spare HUB Review: Field technicians recommend securing communication extension bus connectors with locking tabs to prevent intermittent data drops in high-vibration marine and mobile machinery enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Intelligence \u0026amp; Status Feedback\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe front-panel LCD interface provides immediate access to active I\/O states, analog scaling values, and custom user diagnostic alarm strings.\u003c\/li\u003e\n\u003cli\u003eInternal watchdog timers and memory checksum routines monitor execution loops continuously to isolate logic faults during plant commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Industrial Equipment \u0026amp; Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAutomated wastewater treatment blower control and chemical metering skids.\u003c\/li\u003e\n\u003cli\u003eMulti-zone commercial HVAC ventilation and refrigeration monitoring panels.\u003c\/li\u003e\n\u003cli\u003eIndustrial conveyor sorting hubs requiring networked data logging.\u003c\/li\u003e\n\u003cli\u003eAgricultural irrigation pumping stations with remote sensor feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal Logistics, Traceability \u0026amp; Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDelivered in secure industrial anti-static packaging with complete factory inspection verification.\u003c\/li\u003e\n\u003cli\u003eBacked by a reliable 12-month operational warranty covering material workmanship and hardware defects.\u003c\/li\u003e\n\u003cli\u003eExpedited global dispatch within 24-48 hours via top-tier express carriers: FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdvanced Technical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I configure the analog input feature on the \u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Inputs I1 through I6 can be software-configured as 0-10V analog inputs directly within Zelio Soft programming software without hardware jumpers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this modular smart relay connect to a supervisory SCADA network via Ethernet?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, by attaching the compatible SR3NET01BD Ethernet extension module to the side communication port, remote web monitoring and Modbus TCP communication are enabled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens to user programs and real-time clock settings during an extended power interruption?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The internal flash memory retains the user application indefinitely without a battery, while the real-time clock maintains timekeeping functions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How can I prevent false analog readings caused by electrical noise in heavy industrial plants?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Always use shielded cable for analog sensor runs, ground the shield at one end only, and keep signal wires away from high-voltage motor power cables.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is it possible to expand the physical I\/O count beyond the base 26 points?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, Zelio Logic modular expansion blocks can be coupled to the base unit to scale up digital and analog input\/output capacity.\u003c\/p\u003e\n\u003ch3\u003eProcurement \u0026amp; Selection Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEvaluate whether your application requires built-in analog scaling capabilities; choosing the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSR3B261BD\u003c\/span\u003e\u003c\/strong\u003e saves panel space by eliminating separate analog converter modules.\u003c\/li\u003e\n\u003cli\u003eProcure through authorized supply partners like \u003cstrong\u003eGlobal PLC Spare HUB\u003c\/strong\u003e to ensure certified \u003cstrong\u003eSchneider Electric\u003c\/strong\u003e hardware origin and full warranty protection.\u003c\/li\u003e\n\u003cli\u003eKeep compatible communication modules and spare base units in stock to facilitate rapid system upgrades during scheduled facility turnarounds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SR3B261BD.png?v=1789718943\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":45467747254454,"sku":"SR3B261BD","price":108.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SR3B261BD-1.jpg?v=1789718442","url":"https:\/\/www.plcsparehub.com\/products\/sr3b261bd-schneider-electric-zelio-logic-modular-smart-relay-26-i-o-24v-dc","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}