{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-2VB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-2VB40","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-2VB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2VB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH1131-2VB40, 24 VDC coil, 3 NO instantaneous contacts, 10 A AC-12, screw and snap-on mounting, IP20 front, size S00.","salesMarkdown":"The Siemens SIRIUS 3RH1131-2VB40 is a coupling relay for switching auxiliary circuits — think of it as the signal-level interface between a PLC output or pushbutton and the coil of a larger contactor. It carries three normally-open instantaneous contacts, each rated 10 A at AC-12 and 10 A at 24 V. The coil is 24 VDC, pick-up at 85% of rated voltage, drop-out at 185%, with a constant 1.4 W power draw during both closing and holding. A built-in diode surge suppressor handles the back-EMF from the coil — no external snubber needed. Mounts by screw or snap-on onto a DIN rail. Side clearance is zero; you can gang units side-by-side without extra spacing. Shock resistance tested at 10g / 5 ms and 5g / 10 ms. Maximum operating altitude 2000 m. ## Contact ratings across voltages The three NO contacts are rated for switching at multiple voltage levels: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. Also rated 1 A at 110 V and 0.27 A at 220 V. The 30,000,000 mechanical operating cycles reflect a long service life for auxiliary-duty cycling.","metaTitle":"Siemens 3RH1131-2VB40 SIRIUS Coupling Relay, 24 VDC, 3 NO, 1","metaDescription":"Siemens SIRIUS 3RH1131-2VB40 coupling relay for switching auxiliary circuits. 24 VDC coil, 3 NO contacts, 10 A at AC-12, screw/snap-on mount. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Maximum":"2 000 m","At The Side":"0 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"No","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.85","Shock resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","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","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"Coupling relay for switching auxiliary circuits","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Design of the surge suppressor":"with diode","Closing power of magnet coil at DC":"1.4 W","Holding power of magnet coil at DC":"1.4 W","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 61346-2":"K","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"Cage Clamp terminals","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","Number of NC contacts for auxiliary contacts":"1","Number of NO contacts for auxiliary contacts":"3","with degree of pollution 3 at AC rated value":"690 V","Type of voltage of the control supply voltage":"DC","Identification number and letter for switching elements":"31 E","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"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=59699&mlfb=3RH1131-2VB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2VB40/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RH1131-2VB40 and how is it quoted for volume purchases?","answer":"This part is sourced through independent distribution channels. Submit an RFQ for volume pricing and current availability — quotes are confirmed at the time of request."},{"question":"What is 3RH1131-2VB40's listed depth?","answer":"The depth is 73 mm. Combined with a 45 mm width and 60 mm height, it fits the standard S00 contactor footprint."},{"question":"What compliance documentation does this brand provide for 3RH1131-2VB40?","answer":"As a Siemens SIRIUS product, it is designed to meet IEC/EN 60947-5-1 standards for control circuit devices. Typical documentation includes a CE declaration of conformity, RoHS and REACH compliance statements, and UL/CSA recognition — consult the product datasheet or request certification copies with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-2VB40","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/3RH1131-2VB40 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}}