{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2BB40-0TK0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2BB40-0TK0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2BB40-0TK0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2BB40-0TK0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-2BB40-0TK0-ZX95, size S00, 24 VDC coil, 4 NO contacts, screw and snap-on mounting, IP20 front.","salesMarkdown":"Its 24 VDC coil draws 3.2 W both on pickup and hold, so the power supply sizing is straightforward — no inrush spike to budget for. That matters when your customer's AML specifies gold-flash contacts for low-energy PLC inputs; this part meets that threshold without a separate interface relay. Rated surge voltage resistance is 6 kV, which aligns with IEC 60947-1 overvoltage category III for 300 VAC circuits. Wire termination accepts 2x (0.25... 2.5 mm²) solid or 2x (24... 14 AWG) stranded. RoHS compliance date is July 1, 2006, which covers the original EU RoHS directive. The part carries no explicit REACH or UL listing in the evidence, so verify against your customer's compliance matrix — particularly if the end-client requires UL 508 listing for the panel. The size S00 footprint (45 mm wide, 60 mm tall, 73 mm deep) matches the standard Siemens S00 contactor family. If your panel was laid out for a 3RT1015 motor contactor, this auxiliary contactor shares the same width and mounting hole pattern, so it clips onto the same DIN rail without re-drilling. Shock resistance is 10g for 5 ms and 5g for 10 ms. That's adequate for fixed-mount panels on machine frames but not for direct mounting on a vibrating conveyor or press — use vibration dampers if the panel is on the moving part of the machine.","metaTitle":"Siemens 3RH1140-2BB40-0TK0-ZX95 SIRIUS Auxiliary Contactor,","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH1140-2BB40-0TK0-ZX95, 24 VDC coil, 4 NO contacts, size S00. Active production. IP20 front. Screw/snap-on mount. RFQ for pricing.","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","Rated Value":"24 V","Initial Value":"0.8","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","Full-Scale Value":"1.1","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 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","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","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","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":"DC","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","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=126390&mlfb=3RH1140-2BB40-0TK0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2BB40-0TK0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to this auxiliary contactor?","answer":"The 3RT1015 series motor contactors share the same S00 frame size and mounting footprint, but they are motor-switching devices with different coil voltages and contact configurations. The 3RH1140 is the dedicated auxiliary contactor variant — it is not a direct functional substitute for a motor contactor, nor is the reverse true. If your BOM specifies 3RT1015-1BB42, verify the contact arrangement and coil voltage before substituting this part."},{"question":"What are the key dimensions for panel layout?","answer":"Width 45 mm, height 60 mm, depth 73 mm. The size S00 footprint is common across the Siemens SIRIUS contactor family, so it fits existing DIN-rail layouts without modification."},{"question":"What wire sizes does this contactor accept?","answer":"Solid conductors: 2x (0.25... 2.5 mm²). AWG for auxiliary contacts: 2x (24... 14). This covers standard control wiring from signal pairs to power feeds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2BB40-0TK0-ZX95","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/3RH1140-2BB40-0TK0-ZX95 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}}