{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2JC40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2JC40","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2JC40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2JC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH1140-2JC40, size S00, 4 NO instantaneous contacts, 10 A at 24 V rated value AC-12, screw and snap-on mounting, IP20 front, with diode surge suppression.","salesMarkdown":"The Siemens 3RH1140-2JC40 is a SIRIUS coupling relay — a compact auxiliary contactor block designed to switch control circuits, signal lamps, PLC inputs, and small solenoid loads in a panel. Mounts via screw or snap-on to DIN rail. Clearance at the side is 0 mm — it can butt directly against adjacent devices. For inductive loads at higher voltages, the current capability drops: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. The 4 NO contacts are all instantaneous (no delayed or make-before-break), so timing-critical circuits need external delay modules. Shock resistance of 10g / 5 ms and 5g / 10 ms covers most industrial vibration environments.","metaTitle":"Siemens 3RH1140-2JC40 SIRIUS Coupling Relay, 4 NO, 10A AC-12","metaDescription":"Siemens 3RH1140-2JC40 SIRIUS coupling relay for switching auxiliary circuits. 4 NO contacts, 10A at 24V AC-12, screw/snap-on mount, IP20, size S00. Available 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 The Side":"0 mm","Rated Value":"30 V","On The Front":"IP20","Initial Value":"0.7","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"No","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.25","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":"Coupling relay for switching auxiliary circuits","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 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Design of the surge suppressor":"with diode","Closing power of magnet coil at DC":"2.3 W","Holding power of magnet coil at DC":"2.3 W","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 61346-2":"K","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","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":"DC","Identification number and letter for switching elements":"40 E","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=456991&mlfb=3RH1140-2JC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2JC40/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3RH1140-2JC40?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the closest functional alternative to 3RH1140-2JC40?","answer":"The 3RH2140-1BP40 is a similar SIRIUS coupling relay but with a different coil voltage and terminal arrangement — verify coil compatibility before substituting. The 3RT1015-1BB42 and 3RT1016-1BB42 are contactors, not coupling relays, so they don't drop in without rewiring."},{"question":"What is the depth of 3RH1140-2JC40?","answer":"The depth is 73 mm, with a width of 45 mm and height of 60 mm — standard S00 footprint."},{"question":"What wire sizes does 3RH1140-2JC40 accept?","answer":"The solid/stranded terminals accept 2x (0.25 to 2.5 mm²) per clamp."},{"question":"Will 3RH1140-2JC40 drop into a panel specified for 3RT1015-1BB42?","answer":"No — the 3RT1015-1BB42 is a power contactor, not a coupling relay. The 3RH1140-2JC40 has a different coil circuit and contact arrangement; rewiring is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2JC40","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/3RH1140-2JC40 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}}