{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-2DB40-0KA0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-2DB40-0KA0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-2DB40-0KA0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2DB40-0KA0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 24 VDC coil, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, with varistor surge suppression.","salesMarkdown":"The Siemens 3RH1344-2DB40-0KA0-ZX95 is a SIRIUS auxiliary contactor in size S00, carrying 4 normally-open instantaneous contacts and a 24 VDC coil. The coil draws 3.2 W closing and holding, so the DC supply needs to deliver that continuously; the built-in varistor suppresses the inductive kick on de-energisation. Rated insulation voltage is 6 kV surge withstand, which puts it in the IEC 60947-1 overvoltage category III range — suitable for fixed-installation panels without additional surge protection upstream. The thermal current rating at 24 V is 10 A; at 230 V it derates to 6 A, at 400 V to 3 A, and at 690 V to 1 A. Contact reliability is specified as one incorrect switching operation per 100 million at 17 V, 1 mA, which is the low-energy end — gold-flashed contacts would be better for PLC-level dry circuits, but this part is rated for the typical 24 VDC auxiliary load.","metaTitle":"Siemens 3RH1344-2DB40-0KA0-ZX95 SIRIUS Auxiliary Contactor,","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH1344-2DB40-0KA0-ZX95, size S00, 24 VDC coil, 4 NO contacts, 10 A at 24 V. Current lifecycle stage. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"114 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":"10 000 000","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","Design Of The Surge Suppressor":"with varistor","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","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":"4","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"44","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","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","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=56011&mlfb=3RH1344-2DB40-0KA0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2DB40-0KA0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Will 3RH1344-2DB40-0KA0-ZX95 drop into a panel specified around 3RH2140-1BP40?","answer":"Both are SIRIUS size S00 auxiliary contactors with screw/snap-on DIN-rail mounting, so the footprint and rail clip are identical. The 3RH2140-1BP40 has a different contact configuration and coil voltage — verify the contact count and coil rating before substituting. The mechanical interchange is the same; the electrical fit depends on the circuit requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-2DB40-0KA0-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/3RH1344-2DB40-0KA0-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}}