{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1AB00-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1AB00-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1AB00-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AB00-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-1AB00-1AA0, size S00, 4 NO instantaneous contacts, 24 V 50/60 Hz coil, screw and snap-on mounting, IP20 front.","salesMarkdown":"It's the part you reach for when a PLC output needs to drive a handful of signal loads, or when a main contactor's auxiliary contacts are spoken for and you need isolated feedback to a safety relay or a DCS input. Four NO contacts give you four independent switching paths — enough to handle a start/stop interlock, a run-status lamp, a remote-permissive signal, and a spare for the next field modification. The contacts are rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, so the same block can switch a 24 VDC pilot relay or a 400 VAC contactor coil. Off-state leakage and minimum switching are covered by the contact reliability spec: one incorrect operation per 100 million cycles at 17 V, 1 mA — meaning it'll reliably switch dry logic-level signals, not just power loads. The S00 footprint is 45 mm wide, 57.5 mm tall, and 72 mm deep, so it fits in the same slot as a S00 contactor. Standing position on a horizontal mounting surface is the intended orientation. Wire termination accepts solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² per terminal. The IP20 front protection means it's safe from finger contact in an enclosed panel but not washdown-rated — keep it behind a cabinet door. Shock resistance of 10g / 5 ms and 5g / 10 ms covers the vibration you'd see on a conveyor drive or a press — it won't drop out on a bump. RoHS compliance date of July 1, 2006 confirms it meets the EU substance restrictions. No UL or CSA mark is listed in the evidence, so verify with your local Siemens representative if your site requires those approvals.","metaTitle":"Siemens 3RH1140-1AB00-1AA0 SIRIUS Auxiliary Contactor, 4 NO,","metaDescription":"Siemens 3RH1140-1AB00-1AA0 SIRIUS auxiliary contactor, 4 NO contacts, size S00, 24 V 50/60 Hz coil. IP20 front, screw/snap-on mount. Active production, sourced to order. Request qu","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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S00","Product Brand Name":"SIRIUS","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","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":"24 V","at 500 V rated value":"2 A","at 60 Hz rated value":"24 V","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","with high demand rate according to SN 31920":"75 %","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","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Inductive Power Factor With The Holding Power Of The Coil":"0.27","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link 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=168886&mlfb=3RH1140-1AB00-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AB00-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RH1140-1AB00-1AA0?","answer":"The depth is 72 mm, with a width of 45 mm and height of 57.5 mm, fitting the S00 frame size."},{"question":"What wire sizes does 3RH1140-1AB00-1AA0 accept?","answer":"Each terminal accepts solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1AB00-1AA0","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/3RH1140-1AB00-1AA0 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}}