{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1BE80","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1BE80","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1BE80","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BE80","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-1BE80, size S00, 4 NO contacts, screw and snap-on mounting, 45 mm width, rated 10 A at AC-12.","salesMarkdown":"## Siemens SIRIUS 3RH1140-1BE80 — auxiliary contactor, size S00, 4 NO The 3RH1140-1BE80 is a Siemens SIRIUS auxiliary contactor in frame size S00, carrying four normally-open instantaneous contacts (4 NO). It switches up to 10 A in AC-12 duty (resistive loads at 24 V), making it the signal-level extension block for a contactor or relay stack in a motor control center. Rated operational current drops with voltage: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. The AC-12 figure governs the resistive load curve; for inductive or motor-circuit auxiliary switching, derate per the contactor's utilization category. Wire termination accepts solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm² per terminal. Depth of 72 mm leaves clearance for gland plates and rear ducting. Front face rated IP20; side clearances are 0 mm for side-by-side stacking. Shock resistance tested at 10g / 5 ms and 5g / 10 ms. Surge voltage withstand at 6 kV. Altitude limit 2 000 m without derating. ## Coil and switching characteristics DC magnet coil draws 3.2 W closing and holding — no pick-up surge beyond steady-state. No leading, delayed, lagging, or make-before-break contact configurations; this is a straight 4 NO block. Mechanical endurance typical at 30 million operations. The contactor size S00 mates physically with S00 power contactors (e.g. 3RT1 series) for auxiliary expansion.","metaTitle":"Siemens 3RH1140-1BE80 SIRIUS Auxiliary Contactor, S00, 10A A","metaDescription":"Siemens SIRIUS 3RH1140-1BE80 auxiliary contactor, size S00, 4 NO contacts, 10A AC-12 rated. Screw/snap-on mounting, 45mm wide. Available to order, RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"0 mm","Rated Value":"80 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 Degree Of Pollution 3 Rated Value":"690 V","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","Of Auxiliary Contacts Instantaneous Contact":"0","Number of NC contacts for auxiliary contacts":"0","Number of NO contacts for auxiliary contacts":"4","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=389272&mlfb=3RH1140-1BE80","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BE80/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1140-1BE80 and how do I get a price?","answer":"3RH1140-1BE80 is sourced and quoted to order against an RFQ. Submit a request for quote (RFQ) through this listing; availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3RH1140-1BE80?","answer":"It is a 4 NO auxiliary contactor, size S00, rated 10 A at AC-12 (24 V), with a 3.2 W DC coil. Operating temperature range -25 to +60 °C, IP20 front face, 45 mm wide."},{"question":"Will 3RH1140-1BE80 drop into a panel specified around 3RH2140-1BP40?","answer":"The 3RH1140-1BE80 shares the same S00 frame size and DIN-rail footprint as the 3RH2140-1BP40, so it mounts in the same panel location. However, verify contact configuration (4 NO vs any NC on the sibling) and coil voltage before substitution — the 1BE80 suffix indicates a specific DC coil variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1BE80","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/3RH1140-1BE80 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}}