{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-2DB40-0KA0-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-2DB40-0KA0-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-2DB40-0KA0-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2DB40-0KA0-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 24 V DC coil, 4 NO instantaneous contacts, 10 A rated current, screw and snap-on mounting, IP20 front, with varistor surge suppression.","salesMarkdown":"Its 24 V DC coil pulls in at 3.2 W and holds at the same 3.2 W, so the coil draw is constant; no economizer circuit inside. The four normally-open instantaneous contacts (4 NO, zero NC) are rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, which covers most PLC output interposing and signal-level switching in a panel. Built-in varistor surge suppression on the coil means you don't need an external flyback diode or RC snubber for DC switching — the varistor clamps the inductive kick. That saves a wiring step and one component on the DIN rail. Mounts via screw or snap-on to a DIN rail. That's standard for control wiring up to 14 AWG. No special ferrule requirement, but stranded wire benefits from a ferrule for reliable clamping in the screw terminal. Shock resistance is 10g at 5 ms and 5g at 10 ms — tough enough for most industrial panels but not for direct machine-mount on a vibrating press. RoHS compliance date is July 1, 2006, covering the standard EU substance restrictions.","metaTitle":"Siemens 3RH1344-2DB40-0KA0-ZW97 SIRIUS Auxiliary Contactor,","metaDescription":"Siemens SIRIUS 3RH1344-2DB40-0KA0-ZW97 auxiliary contactor, size S00. 24 V DC coil, 10 A rated, 4 NO + 0 NC contacts. IP20 front, screw/snap-on mount. Current production, sourced t","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=161120&mlfb=3RH1344-2DB40-0KA0-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2DB40-0KA0-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1344-2DB40-0KA0-ZW97?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the rated current of 3RH1344-2DB40-0KA0-ZW97 at different voltages?","answer":"The contacts are rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. These are the thermal current ratings for the 4 NO contacts."},{"question":"Does 3RH1344-2DB40-0KA0-ZW97 have built-in surge suppression?","answer":"Yes, the coil includes a built-in varistor surge suppressor. No external flyback diode or RC snubber is needed for DC switching."},{"question":"What is the mechanical life of this contactor?","answer":"Typical mechanical life is 10 million switching operations. Contact reliability is one incorrect operation per 100 million cycles at 17 V, 1 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-2DB40-0KA0-ZW97","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-ZW97 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}}