{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SR3XT61B","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"SR3XT61B","canonicalUrl":"https://aoctrl.com/schneider/SR3XT61B","factsUrl":"https://aoctrl.com/api/mcp/products/SR3XT61B","rawCanonicalId":null},"summary":{"shortDescription":"Schneider SR3XT61B Controllers Plc Modules — now discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.","salesMarkdown":"## Overview The SR3XT61B is a Schneider Zelio Logic digital I/O module, order code SR3XT61B, providing 4 digital inputs, 4 analog inputs, and 2 relay outputs in a compact DIN-rail housing with screw terminals and IP20 protection. It operates on a 24 V AC supply and draws 0.0044 A, with a cycle time of 6 to 90 ms and a response time of 50 ms. The module performs a program memory check on each power-up, ensuring the loaded logic is intact before the controller begins scanning. The 6 to 90 ms cycle time covers the full scan range for small to medium logic blocks; the 50 ms response time governs how quickly the relay outputs react to input state changes. The relay outputs switch at a maximum current of 0.01 A and are rated for 0.1 Hz at rated load (10 Hz under no load). The 4 analog inputs accept 24 V AC signals, allowing direct connection of sensors or transmitters without an external signal conditioner, while the 4 digital inputs handle discrete 24 V AC signals from pushbuttons, limit switches, or proximity sensors. ## Applications The SR3XT61B fits into small machine control, building automation (lighting, HVAC, access), simple process skids, and OEM equipment where a mix of digital and analog I/O is needed in a single, DIN-rail-mounted module. Typical uses include conveyor interlocks, pump sequencing, and temperature monitoring with relay-driven alarms.","metaTitle":"Schneider SR3XT61B Zelio Logic Digital I/O Module, 4 DI, 4 AI, 2 Relay","metaDescription":"Schneider Zelio Logic SR3XT61B digital I/O module: 4 digital inputs, 4 analog inputs, 2 relay outputs, 24 V AC, DIN rail, IP20. CSA/UL/GL/GOST certified.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Checks":"Program memory on each power up","Category":"US1000I22378","Standards":"IEC 61000-4-12 IEC 61000-4-6 level 3 IEC 61000-4-3 IEC 60068-2-27 Ea IEC 61000-4-4 level 3 IEC 61000-4-11 IEC 61000-4-5 IEC 61000-4-2 level 3 IEC 60068-2-6 Fc","Cycle time":"6...90 ms","Backup time":"10 years 77 °F (25 °C)","Clock drift":"12 min/year 32...131 °F (0...55 °C)","Response time":"50 ms ladder from state 0 to state 1)discrete input 50 ms ladder from state 1 to state 0)discrete input 50...255 ms FBD from state 0 to state 1)discrete input 50...255 ms FBD from state 1 to state 0)discrete input 10 ms from state 0 to state 1)relay output 5 ms from state 1 to state 0)relay output","lifecycle_stage":"current","Pollution degree":"2 IEC 61131-2","Range of Product":"Zelio Logic","Supply frequency":"50/60 Hz","Relative Humidity":"95 % without condensation or dripping water","Tightening Torque":"4.4 lbf.in (0.5 N.m)","Operating altitude":"6561.68 ft (2000 m)","Operating rate in Hz":"0.1 Hz at Ie)relay output 10 Hz no load)relay output","Overvoltage category":"III conforming to IEC 60664-1","Discrete input number":"4","Mechanical durability":"10000000 cycles relay output","Nbr. of units in pkg.":"1","Supply voltage limits":"20.4...28.8 V","Discrete input current":"4.4 mA","Discrete input voltage":"24 V AC","Connections - terminals":"Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) flexible with cable end Screw terminals, 2 x 0.25...2 x 0.75 mm² AWG 24...AWG 18) flexible with cable end Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) semi-solid Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) solid Screw terminals, 2 x 0.2...2 x 1.5 mm² AWG 24...AWG 16) solid","IP degree of protection":"IP20 IEC 60529 terminal block) IP40 IEC 60529 front panel)","Discrete input frequency":"47...53 Hz 57...63 Hz","Product or Component Type":"Discrete I/O extension module","[Us] rated supply voltage":"24 V AC","Current state 0 guaranteed":"= 10 mA 12 V relay output)","Maximum altitude transport":"10000 ft (3048 m)","Voltage state 0 guaranteed":"= 2 mA discrete input)","Voltage state 1 guaranteed":">= 14 V discrete input","Reverse polarity protection":"With","Environmental characteristic":"EMC directive conforming to IEC 61000-6-2 EMC directive conforming to IEC 61000-6-3 EMC directive conforming to IEC 61000-6-4 EMC directive conforming to IEC 61131-2 zone B Low voltage directive conforming to IEC 61131-2","Disturbance radiated/conducted":"Class B EN 55022-11 group 1","Number or control scheme lines":"120 ladder","Ambient Air Temperature for Storage":"-40...158 °F (-40...70 °C)","Ambient air temperature for operation":"-4...104 °F (-20...40 °C) in non-ventilated enclosure IEC 60068-2-1 and IEC 60068-2-2 -4...131 °F (-20...55 °C) IEC 60068-2-1 and IEC 60068-2-2","[Uimp] rated impulse withstand voltage":"4 kV EN/IEC 60947-1 and EN/IEC 60664-1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$31.75","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/731f8f00c14cc47f47f09c135adc2c34.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/SR3XT61B/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/SR3XT61B","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/SR3XT61B when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}