{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1AE00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1AE00","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1AE00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AE00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-1AE00, 4 NO instantaneous contacts, size S00, 10 A rated current at 24 V, screw and snap-on mounting.","salesMarkdown":"The Siemens 3RH1140-1AE00 is a SIRIUS auxiliary contactor — a compact switching block that mirrors the state of a main contactor or provides isolated signal feedback in a control circuit. It carries four normally-open instantaneous contacts and is sized for the S00 contactor frame, meaning it mounts directly alongside or on top of S00 power contactors like the 3RT1015 or 3RT1016 series without extra adapters. The headline rating is 10 A at 24 V, which is also the maximum operating current under AC-12 duty — that's the resistive-load switching category for control circuits. So this contactor handles typical PLC output loads, relay coils, indicator lamps, and small solenoid valves without derating. For inductive loads like contactor coils or small motors, the switching capacity drops: at 230 V it's rated 6 A, at 400 V it's 3 A, and at 690 V it's 1 A. Those are the numbers to use when sizing for motor control or transformer circuits.","metaTitle":"Siemens 3RH1140-1AE00 SIRIUS Auxiliary Contactor, 4 NO, S00,","metaDescription":"Siemens 3RH1140-1AE00 SIRIUS auxiliary contactor, 4 NO contacts, size S00, rated 10 A at 24 V, screw/snap-on mount, IP20 front, current production.","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 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"0 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"60 V","at 500 V rated value":"2 A","at 60 Hz rated value":"60 V","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","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","Apparent holding power of magnet coil at AC":"4.6 V·A","Apparent pick-up power of magnet coil at AC":"27 V·A","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":"AC","Inductive power factor with closing power of the coil":"0.8","Identification number and letter for switching elements":"40 E","Inductive power factor with the holding power of the coil":"0.27","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=460019&mlfb=3RH1140-1AE00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AE00/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this auxiliary contactor?","answer":"It has 4 normally-open instantaneous contacts, rated 10 A at 24 V and 10 A maximum under AC-12 resistive duty. Inductive load ratings drop to 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V."},{"question":"What is the mounting and enclosure rating?","answer":"It mounts via screw or snap-on onto a DIN rail. The front face is IP20, suitable for enclosed panel use. Dimensions are 45 mm wide, 57.5 mm high, and 72 mm deep."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1AE00","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/3RH1140-1AE00 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}}