{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2AG60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2AG60","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2AG60","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AG60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1140-2AG60, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, 10 A at 24 V.","salesMarkdown":"It carries four instantaneous normally-open contacts — no delayed, leading, or lagging switching — so every contact closes and opens together with the coil. Each contact is rated for 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These are thermal current ratings for the contact block itself; the actual switching capacity depends on the load type and coil voltage. The 10 A at 24 V figure tells you the contacts can handle the inrush of a small contactor or relay coil without welding. At 690 V, the 1 A rating is typical for isolating a lightly loaded control transformer secondary. The contacts are rated for 6 kV surge voltage withstand (impulse), which matches the insulation coordination for pollution degree 3 environments — common in industrial panels where conductive dust or humidity may be present. ## Mechanical life and reliability The typical mechanical life is 30 million switching operations. Contact reliability is specified as one incorrect switching operation per 100 million at 17 V, 1 mA — meaning the contacts are reliable down to low-level signals, not just power circuits. Shock resistance is 10g for 5 ms and 5g for 10 ms, so it holds its state under moderate vibration on a conveyor or pump panel. The 3RH1140-2AG60 is 45 mm wide, 60 mm tall, and 73 mm deep — a standard S00 footprint that fits alongside other SIRIUS components on a DIN rail. An auxiliary switch extension (product extension auxiliary switch = Yes) can be added on top if more contacts are needed later.","metaTitle":"Siemens 3RH1140-2AG60 SIRIUS Auxiliary Contactor, 4 NO, S00","metaDescription":"Siemens 3RH1140-2AG60 SIRIUS auxiliary contactor, size S00, 4 instantaneous NO contacts, screw/snap-on mount, IP20 front. Rated 10 A at 24 V. Sourced to order against 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":"100 V","at 500 V rated value":"2 A","at 60 Hz rated value":"100 ... 110 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 (24 ... 14)","operational current at AC-12 maximum":"10 A","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=470557&mlfb=3RH1140-2AG60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AG60/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1140-2AG60 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What are the key contact ratings for 3RH1140-2AG60?","answer":"The contacts are rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V, with a surge voltage withstand of 6 kV."},{"question":"What is the physical size and mounting of 3RH1140-2AG60?","answer":"It is 45 mm wide, 60 mm tall, 73 mm deep, mounts via screw or snap-on to DIN rail, and accepts 0.25 to 2.5 mm² conductors."},{"question":"Does 3RH1140-2AG60 drop into a panel designed for 3RH2131-2AK60?","answer":"Both are SIRIUS auxiliary contactors in size S00 with the same 45 mm width and DIN-rail mounting, so the physical footprint is identical. The main difference is contact configuration: 3RH1140-2AG60 has 4 NO contacts, while 3RH2131-2AK60 has a different contact arrangement. Verify the contact scheme matches your circuit before swapping."},{"question":"What compliance documentation is available for 3RH1140-2AG60?","answer":"The part carries a RoHS compliance date of July 1, 2006, indicating it meets the original RoHS directive. Standard Siemens documentation includes a CE declaration of conformity and a UL/CSA file; request these with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2AG60","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/3RH1140-2AG60 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}}