{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2BD40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2BD40","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2BD40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2BD40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1140-2BD40, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, rated operational current 10 A at AC-12.","salesMarkdown":"It carries four normally-open (NO) instantaneous contacts, no delayed or lagging contacts, so it's a straight-up signal repeater, not a timing element. Rated operational current hits 10 A in AC-12 duty (resistive loads at line frequency), and it's rated for switching down to 0.27 A at 220 V DC and up to 6 A at 230 V AC — so it'll handle a mix of coil and signal loads across a typical 24–690 V control panel. Side clearance is zero mm, meaning you can butt it against the next device without derating for airflow. ## Environmental and mechanical specs Shock resistance is 10g for 5 ms and 5g for 10 ms, so it won't rattle loose on a vibrating conveyor line.","metaTitle":"Siemens 3RH1140-2BD40 SIRIUS Auxiliary Contactor, Size S00,","metaDescription":"Siemens 3RH1140-2BD40 SIRIUS auxiliary contactor, size S00, 4 NO contacts, screw/snap-on mount, IP20 front, rated 10A AC-12, 6 kV surge. Current lifecycle, 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":"42 V","On The Front":"IP20","Initial Value":"0.8","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"Yes","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.1","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":"Auxiliary contactor","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":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Closing power of magnet coil at DC":"3.2 W","Holding power of magnet coil at DC":"3.2 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":"0","Number of NO contacts for auxiliary contacts":"4","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":"40 E","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"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=31650&mlfb=3RH1140-2BD40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2BD40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1140-2BD40 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ and we'll get you a firm price and lead time."},{"question":"What compliance documentation does this brand provide for 3RH1140-2BD40?","answer":"As a Siemens SIRIUS product, standard documentation includes a CE declaration of conformity and the product datasheet. UL, CSA, and other agency approvals are typical for this series but should be verified against the specific variant at order time. RoHS and REACH compliance is standard for current-production Siemens industrial controls."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2BD40","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/3RH1140-2BD40 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}}