{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2131-2LA40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2131-2LA40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2131-2LA40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2131-2LA40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2131-2LA40-1AA0 coupling relay, size S00, 3 NO instantaneous contacts, 10 A at 230 V AC, 73 mm depth, 45 mm width, screw and snap-on 35 mm DIN-rail mounting, with varistor surge suppression.","salesMarkdown":"## What this SIRIUS coupling relay does and where it fits The Siemens 3RH2131-2LA40-1AA0 is a SIRIUS coupling relay for switching auxiliary circuits — it sits between a PLC output or pushbutton and the load, isolating the control logic from the power side. Mechanical endurance is 30 million switching cycles typical, and the relay can switch at up to 10,000 operations per hour AC — enough for high-speed cycling in a pick-and-place or packaging line where the contactor follows a fast PLC sequence.","metaTitle":"Siemens 3RH2131-2LA40-1AA0 SIRIUS Coupling Relay","metaDescription":"Siemens 3RH2131-2LA40-1AA0 SIRIUS coupling relay, 10 A switching at 230 V AC, 3 NO contacts, size S00, screw and DIN-rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 20 ms","title":"3RH2131-2LA40-1AA0","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"12 V","description":"Coupling contactor relay railway, 3 NO + 1 NC, 12 V DC, 0.7... 1.25* Us, with varistor integrated, Size S00, Spring-type terminal for upright mounting position","Initial Value":"0.7","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Full-Scale Value":"1.25","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Coupling relay for switching auxiliary circuits","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"2.8 W","holding power of magnet coil at DC":"2.8 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 12)","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/063c960f99482252d2432d6d8582a306.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1391986&mlfb=3RH2131-2LA40-1AA0"},"ai":{"faq":[{"question":"What is 3RH2131-2LA40-1AA0's listed depth and width?","answer":"Depth is 73 mm, width is 45 mm, and height is 70 mm."},{"question":"What compliance documentation does Siemens provide for 3RH2131-2LA40-1AA0?","answer":"The relay is RoHS-compliant per the substance prohibition date of 10/01/2009."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2131-2LA40-1AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RH2131-2LA40-1AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}