{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2AB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2AB00","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2AB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-2AB00, Size S00, 4 NO, 10 A AC-12 at 24 V, screw and snap-on mounting.","salesMarkdown":"Rated 10 A in AC-12 duty at 24 V, it handles resistive and solid-state loads typical of PLC outputs and relay coils. The contact arrangement is 4 normally-open instantaneous contacts — no delayed, lagging, or make-before-break switching. Size S00 means it fits the compact footprint (45 mm wide, 60 mm tall, 73 mm deep) shared with the SIRIUS 3RT contactor family, so it slots into existing panel layouts without re-spacing. For inductive loads (contactors, solenoids), derate to the AC-15 values: 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V. The 4 NO contacts are rated for mechanical endurance of 30 million operations — that's the contactor body, not the contacts under load. Electrical life will be lower and depends on the switched current and voltage. Shock rated at 10g / 5 ms and 5g / 10 ms — fine for most industrial panels but not for high-vibration mobile equipment without additional damping. Front face is IP20 — finger-safe but not washdown. Side clearance is 0 mm to adjacent devices, so it can be ganged without air gaps. Coil operates at 50/60 Hz with a rated control voltage of 24 V; the operating range is 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 times at 60 Hz. It is the standard auxiliary contactor in the SIRIUS S00 frame, so any replacement would need to match the 4 NO configuration and the 10 A AC-12 rating.","metaTitle":"Siemens SIRIUS 3RH1140-2AB00 Auxiliary Contactor, 4 NO, 10 A","metaDescription":"Siemens SIRIUS 3RH1140-2AB00 auxiliary contactor, 4 NO, rated 10 A AC-12 at 24 V. Size S00, screw/snap-on mount. Current lifecycle stage. Sourced to order.","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","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":"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","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"Cage Clamp 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","Number of NC contacts for auxiliary contacts":"0","Number of NO contacts for auxiliary contacts":"4","with degree of pollution 3 at AC rated value":"690 V","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":"$22.33","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=45908&mlfb=3RH1140-2AB00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AB00/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 3RH1140-2AB00?","answer":"It is a 4 NO auxiliary contactor rated 10 A AC-12 at 24 V. AC-15 ratings are 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. Coil is 24 V 50/60 Hz. Mechanical life is 30 million operations."},{"question":"What is the physical size and mounting of the 3RH1140-2AB00?","answer":"It is Size S00: 45 mm wide, 60 mm high, 73 mm deep. Mounts via screw or snap-on to a 35 mm DIN rail. Front face is IP20; side clearance is 0 mm."},{"question":"What wire size does the 3RH1140-2AB00 accept?","answer":"It accepts solid or stranded wire from 0.25 to 2.5 mm² per terminal."},{"question":"Can the 3RH1140-2AB00 replace a 3RT1015-1AG61 in a panel?","answer":"No — the 3RT1015-1AG61 is a power contactor with a main pole current rating, not an auxiliary contactor. The 3RH1140-2AB00 is an auxiliary contactor with 4 NO auxiliary contacts only, no main poles. They serve different functions in the circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2AB00","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/3RH1140-2AB00 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}}