{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2131-1VB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2131-1VB40","canonicalUrl":"https://aoctrl.com/siemens/3RH2131-1VB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2131-1VB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH2131-1VB40, 24 VDC coil, 10 A rated switching, 3 NO instantaneous contacts, size S00, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The Siemens 3RH2131-1VB40 is a SIRIUS coupling relay — a contactor-style device for switching auxiliary circuits in control panels. It carries 3 normally-open instantaneous contacts rated 10 A at 24 V and 10 A at 230 V, with a 24 VDC coil drawing 1.6 W. The 10 A rating at both 24 V and 230 V covers most auxiliary loads — pilot lights, solenoid valves, small contactor coils. The 3 NO contacts give you three independent switching paths in one package, which saves DIN-rail space compared to stacking individual relays. The diode surge suppressor is built into the coil circuit, so you don't need an external flyback diode on the DC side. Mounting is flexible: screw-fix or snap onto 35 mm DIN rail. Clearances: 10 mm upward and forward, 6 mm at the sides.","metaTitle":"Siemens 3RH2131-1VB40 SIRIUS Coupling Relay, 24 VDC, 10 A, 3","metaDescription":"Siemens SIRIUS 3RH2131-1VB40 coupling relay for auxiliary circuits. 24 VDC coil, 10 A rated, 3 instantaneous NO contacts. Screw and snap-on DIN rail mounting. Current production. Q","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":"20 ... 80 ms","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.85","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +50 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.85","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 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":"diode","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"1.6 W","holding power of magnet coil at DC":"1.6 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 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 ... 1.5 mm²), 2x (0.75 ... 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 %","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":"screw-type 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=64661&mlfb=3RH2131-1VB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2131-1VB40/alternatives.json"},"ai":{"faq":[{"question":"Will 3RH2131-1VB40 drop into a panel specified around 3RH2122-1WB40?","answer":"Both are size S00 Siemens SIRIUS contactor relays with the same 45 mm width and 35 mm DIN rail mounting. The 3RH2131-1VB40 has 3 NO contacts; the 3RH2122-1WB40 has a different contact arrangement. Check your schematic for NO vs NC count before swapping."},{"question":"What is the depth and width of 3RH2131-1VB40?","answer":"Depth is 73 mm, width is 45 mm, height is 57.5 mm."},{"question":"What compliance documentation does Siemens provide for this relay?","answer":"The part carries a RoHS compliance date of 10/01/2009, indicating it meets the EU RoHS directive. Standard Siemens documentation includes the declaration of conformity and CE marking."},{"question":"Where can I buy 3RH2131-1VB40 and how is it quoted?","answer":"This part is sourced through independent industrial automation distribution. Submit an RFQ with your quantity; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2131-1VB40","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/3RH2131-1VB40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}