{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1AV60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1AV60","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1AV60","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AV60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, 10 A AC-12 at 24 V, screw and snap-on mounting, IP20 front.","salesMarkdown":"It's the switching element for control circuits — pilot lights, PLC inputs, contactor coils, relay loads — not a main power contactor. The headline rating is 10 A at AC-12 (resistive loads at 24 V). That is the maximum continuous current through each contact when switching resistive loads like indicator lamps or solenoid valves. For inductive loads — contactor coils, small relays — the rating drops: at 230 V it is 6 A, at 400 V it is 3 A, at 690 V it is 1 A. The AC-12 figure governs the control-circuit bus; the derated numbers govern what you can actually switch on a 400 V line. The 6 kV rated surge voltage means the contacts handle the transients from switching inductive loads without welding shut — standard for a 400 V industrial panel. The 45 mm width occupies a single DIN-rail slot, so it fits in crowded panel layouts. Wiring accepts solid conductors from 0.5 mm² up to 4 mm² (or 2x 1.5 mm², 2x 2.5 mm²) and AWG equivalents. ## Mechanical endurance Rated for 30 million mechanical operations typical. That is the life of the contact carrier and spring mechanism before wear-out — not the electrical life, which depends on load current and switching frequency. For a control-circuit contactor that cycles once per machine cycle, 30 million operations translates to roughly a decade of continuous three-shift operation.","metaTitle":"Siemens 3RH1140-1AV60 SIRIUS Auxiliary Contactor, 4 NO, 10A","metaDescription":"Siemens 3RH1140-1AV60 SIRIUS auxiliary contactor, size S00, 4 NO contacts, 10A AC-12 at 24V. Screw and snap-on mounting, IP20 front, 45mm wide. 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","at 60 Hz":"0.85 ... 1.1","1 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 500 V rated value":"2 A","at 60 Hz rated value":"480 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=424084&mlfb=3RH1140-1AV60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1AV60/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RH1140-1AV60?","answer":"It carries four normally-open instantaneous contacts rated 10 A at AC-12 (24 V), with derated values for higher voltages: 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The surge voltage rating is 6 kV, and mechanical life is 30 million operations typical."},{"question":"What wire sizes does the 3RH1140-1AV60 accept?","answer":"It accepts solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². AWG equivalents are 2x (20 to 16), 2x (18 to 14), and 1x 12."},{"question":"How does the 3RH1140-1AV60 mount in a panel?","answer":"It uses screw and snap-on mounting for a DIN rail. The S00 frame is 45 mm wide (one DIN slot). Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward."},{"question":"What is the protection class and pollution degree?","answer":"IP20 on the front (finger-safe, not water-protected). Pollution degree 3, meaning it is rated for industrial environments with conductive dust and humidity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1AV60","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/3RH1140-1AV60 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}}