{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1BP40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1BP40","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1BP40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BP40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-1BP40, size S00, 4 NO contacts, 10 A AC-12, 45 mm width, screw and snap-on mounting.","salesMarkdown":"The Siemens 3RH1140-1BP40 is a SIRIUS auxiliary contactor in size S00, carrying 4 normally-open instantaneous contacts rated 10 A in AC-12 duty (resistive loads at 230/400 V). It's the switching block that extends the control-circuit capacity of a main contactor or starter — think signal feedback, PLC inputs, or pilot lights on a motor starter. Rated surge voltage resistance is 6 kV, and the coil draws 3.2 W DC both on pickup and hold. Screw and snap-on mounting onto a DIN rail. Zero clearance required at the side. IP20 on the front — fine for a closed panel, not for washdown zones. Terminal capacity: accepts 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm² solid. The 10 A AC-12 rating (resistive) is the headline — it's what you use for control transformers, indicator lamps, and PLC digital inputs. For inductive loads at 230 V, the rated operational current drops to 6 A; at 400 V it's 3 A; at 690 V it's 1 A. That derating curve matters if you're switching contactor coils or small solenoids. Shock resistance is 10g for 5 ms and 5g for 10 ms — typical for industrial panels on conveyors or presses, but not rated for continuous high-G vibration environments without additional damping. Mechanical endurance is 30 million operations typical for the contactor block — that's the relay life, not the contact life under load. Electrical endurance depends on the switched current and voltage.","metaTitle":"Siemens 3RH1140-1BP40 SIRIUS Auxiliary Contactor, 4 NO, 10 A","metaDescription":"Siemens 3RH1140-1BP40 SIRIUS auxiliary contactor, 4 NO contacts, 10 A AC-12 rated, size S00, screw/snap-on mount, 45 mm wide. Current lifecycle stage. Sourced to order against RFQ.","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":"230 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=285167&mlfb=3RH1140-1BP40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BP40/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RH1140-1BP40?","answer":"72 mm depth, with 45 mm width and 57.5 mm height. Zero side clearance required."},{"question":"What wire sizes does 3RH1140-1BP40 accept?","answer":"Solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm². Pollution degree 3 rated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1BP40","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/3RH1140-1BP40 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}}