{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1AD00-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1AD00-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1AD00-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AD00-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-1AD00-1AA0, 4 NO contacts, size S00, 45 mm wide, IP20 front protection.","salesMarkdown":"It is designed for control-circuit switching in motor starter assemblies and general panel logic where additional contact sets are needed beyond what the main contactor provides. Front protection is IP20. Switching capacity varies by voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. RoHS compliance date is 07/01/2006. The part carries the SIRIUS brand and is covered by Siemens standard documentation package including CE, UL, and CSA certifications per the series family. ## Integration notes Wire termination accepts solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm². The screw terminals are sized for standard control wiring up to 4 mm². Shock resistance rated at 10g for 5 ms and 5g for 10 ms, which is typical for panel-mounted control gear in machinery applications. ## Contact configuration and switching behavior The 3RH1140-1AD00-1AA0 provides 4 NO contacts with no leading, lagging, delayed, or make-before-break switching. All four contacts close and open simultaneously. The auxiliary switch extension option is available for adding more contact blocks. Coil data is not listed in this spec set; verify coil voltage against your control circuit. The contactor size S00 means this auxiliary block shares the same footprint as S00 power contactors for compact stacking.","metaTitle":"Siemens SIRIUS 3RH1140-1AD00-1AA0 Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH1140-1AD00-1AA0, 4 NO contacts, size S00, 45 mm wide, IP20 front. Screw and snap-on DIN rail mounting. Active 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","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":"42 V","at 500 V rated value":"2 A","at 60 Hz rated value":"42 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","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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=188902&mlfb=3RH1140-1AD00-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AD00-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size and mounting?","answer":"Width 45 mm, height 57.5 mm, depth 72 mm. Screw and snap-on DIN rail mounting, standing position on horizontal surface. Front protection IP20."},{"question":"What wire sizes does it accept?","answer":"Solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm². Screw terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1AD00-1AA0","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/3RH1140-1AD00-1AA0 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}}