{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1CB00-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1CB00-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1CB00-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1CB00-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1344-1CB00-0KA0, size S00, 4 NO contacts, 24 V 50/60 Hz coil, screw and snap-on mounting, IP20 front.","salesMarkdown":"The Siemens SIRIUS 3RH1344-1CB00-0KA0 is a size S00 auxiliary contactor with four normally open (NO) instantaneous contacts, a 24 V 50/60 Hz coil, and a built-in varistor surge suppressor. The 4 NO contacts are rated for switching at various voltages: 10 A at 24 V AC, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The 24 V rating is the highest — typical for control transformers or PLC output circuits. At 690 V the contact can still switch 1 A, which covers motor-circuit signaling or isolation applications. ## Mounting and integration into a panel The width is 45 mm, depth 111 mm, height 57.5 mm — a standard S00 footprint that fits alongside SIRIUS contactors and overload relays in a modular row. The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm².","metaTitle":"Siemens SIRIUS 3RH1344-1CB00-0KA0 Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS 3RH1344-1CB00-0KA0 auxiliary contactor, 4 NO contacts, size S00, 24 V 50/60 Hz coil, IP20 front, screw/snap-on mount. Active production. Sourced to order.","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":"24 V","at 500 V rated value":"2 A","at 60 Hz rated value":"24 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","Design Of The Surge Suppressor":"with varistor","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","Surge Voltage Resistance Rated Value":"6 kV","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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=382935&mlfb=3RH1344-1CB00-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1CB00-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is the contact configuration of 3RH1344-1CB00-0KA0?","answer":"It has 4 normally open (NO) instantaneous contacts — no delayed, lagging, or make-before-break switching. The leading and lagging contact counts are both zero."},{"question":"What is the coil voltage and frequency for this contactor?","answer":"The coil is rated 24 V at both 50 Hz and 60 Hz. The operating range is 0.8 to 1.1 times rated voltage at 50 Hz, and 0.85 to 1.1 at 60 Hz."},{"question":"Where can I buy 3RH1344-1CB00-0KA0?","answer":"This part is sourced 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/3RH1344-1CB00-0KA0","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/3RH1344-1CB00-0KA0 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}}