{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AU00-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AU00-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AU00-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, auxiliary contactor, 3RH1344-1AU00-0KA0, 4 instantaneous NO contacts, S00 frame size, screw and snap-on mounting, IP20 front, 6 kV surge voltage resistance.","salesMarkdown":"It is designed for signal switching and control-circuit isolation inside motor starter assemblies or PLC output cabinets, not for direct motor loads — the contacts are rated for the control voltages listed below, not AC-3 duty. Contact reliability is specified at one incorrect switching operation per 100 million cycles at 17 V and 1 mA — meaning it handles dry-circuit (low-energy) signal switching reliably, not just power-level pilot duty. This matters for PLC inputs or safety relay chains where contact wetting current is minimal. The 4 instantaneous NO contacts (no delayed, lagging, or make-before-break variants on this order code) each carry rated currents that drop sharply with voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These are the thermal continuous currents the contacts can handle at the respective AC voltages, not motor-starting ratings. For a 24 VDC PLC output interposing relay, the 10 A rating gives generous headroom; at 400 V control circuits, the 3 A limit governs. Shock resistance is 10g for 5 ms and 5g for 10 ms, adequate for mounting on machine frames or conveyor sections that see vibration. Substance prohibitance date is 07/01/2006, aligning with RoHS compliance. The SIRIUS series carries CE, UL, and CSA certifications standard for the brand — the 6 kV surge rating and pollution degree 3 support IEC 60947-5-1 compliance for control circuit devices. Wire range accepted: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid — the screw terminals accept dual conductors, useful for daisy-chaining control voltage across multiple contactors in a row. Depth of 111 mm, height of 57.5 mm, and 45 mm width are the S00 standard footprint, so it replaces any S00 auxiliary contactor block on the same DIN-rail pitch without re-drilling.","metaTitle":"Siemens 3RH1344-1AU00-0KA0 SIRIUS Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS 3RH1344-1AU00-0KA0 auxiliary contactor, 4 instantaneous NO contacts, S00 frame, 45mm wide, IP20 front, 6 kV surge. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"111 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"240 V","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":"No","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","reference code according to IEC 81346-2":"K","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","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","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":"AC","Inductive Power Factor With Closing Power Of The Coil":"0.8","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","Inductive Power Factor With The Holding Power Of The Coil":"0.27","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","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=115956&mlfb=3RH1344-1AU00-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RH1344-1AU00-0KA0 used for?","answer":"It is an auxiliary contactor with 4 instantaneous NO contacts, used for signal switching and control-circuit isolation in motor starter assemblies or PLC output cabinets. It is not rated for direct motor loads."},{"question":"Where can I buy 3RH1344-1AU00-0KA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AU00-0KA0","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/3RH1344-1AU00-0KA0 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}}