{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2AV00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2AV00","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2AV00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AV00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-2AV00, 4 NO instantaneous contacts, size S00, 45 mm width, screw and snap-on mounting, IP20 front.","salesMarkdown":"It carries 4 normally-open instantaneous contacts, meaning all four close together when the coil picks up, with no make-before-break or delayed switching in the path. The contacts are rated for 10 A at 24 V, stepping down to 6 A at 230 V and 3 A at 400 V, so the thermal capacity follows the expected derating curve for a size S00 block. The S00 frame size tells you it mates physically with the S00 contactor range — same footprint, same rail slot. The 4 NO contact arrangement is the most common auxiliary block for signalling 'contactor closed' back to a PLC or for interlocking a second device. Because there are no NC contacts built in, you need a separate block if your circuit requires a normally-closed feedback path. Contact reliability is specified as one incorrect switching operation per 100 million cycles at 17 V, 1 mA — that is the dry-circuit reliability figure. If you are switching low-energy signals (PLC inputs, sensor power), this block will not give you intermittent opens. The mechanical endurance of 30 million operations means it outlasts most main contactors it will be paired with.","metaTitle":"Siemens 3RH1140-2AV00 SIRIUS Auxiliary Contactor, 4 NO, S00","metaDescription":"Siemens 3RH1140-2AV00 SIRIUS auxiliary contactor, 4 NO contacts, size S00, 45mm wide. Screw and snap-on mounting. IP20 front. Current production. Source to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 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":"+/-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","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":"400 V","at 500 V rated value":"2 A","at 60 Hz rated value":"400 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 (24 ... 14)","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 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 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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":"Cage Clamp 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":"$29.10","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=347999&mlfb=3RH1140-2AV00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AV00/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this part carry?","answer":"The evidence lists a substance prohibitance date of 07/01/2006, indicating RoHS compliance. The IP20 front protection and 6 kV surge voltage resistance are documented. For specific UL, CSA, or IEC certificates, the datasheet and manufacturer declaration should be referenced."},{"question":"Will this drop into a panel designed for a 3RT1016-1AN22 contactor without rewiring?","answer":"The 3RH1140-2AV00 is a size S00 auxiliary contactor, same frame size as the 3RT1016-1AN22 main contactor. It shares the same 45 mm width and screw/snap-on DIN rail mounting. The auxiliary block mounts directly onto or alongside the main contactor without panel modification. Wiring the 4 NO contacts to the control circuit is straightforward, but verify your specific terminal numbering against the panel schematic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2AV00","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/3RH1140-2AV00 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}}