{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1BB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1BB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1BB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 24 V DC coil, 4 NO instantaneous contacts, Size S00, 45 mm width, screw and snap-on mounting, IP20 front.","salesMarkdown":"## Auxiliary contactor for control-circuit switching It's built into the Size S00 footprint — 45 mm wide, 57.5 mm tall, 72 mm deep — and mounts via screw or snap-on onto DIN rail. The four NO contacts are instantaneous — no make-before-break or delayed switching here, so they close and open in step with the coil. Rated 10 A at 24 V DC covers most PLC output and relay interface loads; at 230 V AC it's still good for 6 A, and at 400 V AC it handles 3 A. The 6 kV surge voltage resistance (rated value) gives it a solid margin for industrial control panels where transient spikes are common. Coil holds at 24 V DC nominal, draws 3.2 W during both pick-up and hold — no inrush spike to budget for.","metaTitle":"Siemens 3RH1140-1BB40-ZX95 SIRIUS Auxiliary Contactor, 24 V","metaDescription":"Siemens SIRIUS 3RH1140-1BB40-ZX95 auxiliary contactor, 24 V DC coil, 4 instantaneous NO contacts, 10 A rated. Size S00, 45 mm wide, screw/snap-on mount, IP20 front. Active producti","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","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)":"01.07.2006 00:00:00","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","reference code acc. to IEC 81346-2":"K","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","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 (0.5 ... 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","Of Auxiliary Contacts Instantaneous Contact":"0","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","B10 value with high demand rate acc. to SN 31920":"1 000 000; With 0.3 x Ie","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":"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=468830&mlfb=3RH1140-1BB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3RH1140-1BB40-ZX95?","answer":"It has a 24 V DC coil, four instantaneous NO contacts rated 10 A at 24 V, and a surge voltage resistance of 6 kV. Size S00 footprint: 45 mm wide, 57.5 mm tall, 72 mm deep."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1BB40-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/3RH1140-1BB40-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}}