{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AL00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AL00","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AL00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AL00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO + 0 NC, screw and snap-on mounting, 45 mm width, IP20 front, 10 A at 24 V rated value.","salesMarkdown":"The Siemens 3RH1344-1AL00 is a SIRIUS auxiliary contactor in size S00 — a compact 45 mm wide block that adds four normally-open signal contacts to a motor starter or control circuit. Rated for 10 A at 24 V, it steps down to 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — covering control voltages from low-voltage DC up to 690 VAC auxiliary circuits. The 6 kV rated surge voltage resistance (per IEC 60947) gives it decent margin for industrial environments with switching transients. Terminals accept solid wire: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm² — the 4 mm² capacity is useful for looping through control voltage without an extra terminal block. Screw-clamp type, so strip length and torque per the datasheet; spring-cage it is not, but the screw terminals hold well under vibration (rated 10g / 5 ms and 5g / 10 ms shock).","metaTitle":"Siemens 3RH1344-1AL00 SIRIUS Auxiliary Contactor, Size S00,","metaDescription":"Siemens 3RH1344-1AL00 SIRIUS auxiliary contactor, size S00, 4 NO contacts, screw/snap-on mount, 10 A at 24 V, IP20 front. Current production. Sourced 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":"125 V","at 500 V rated value":"2 A","at 60 Hz rated value":"125 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 E","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=279515&mlfb=3RH1344-1AL00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AL00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1344-1AL00 and how do I get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not a stock promise."},{"question":"What is 3RH1344-1AL00's contact configuration?","answer":"It has 4 normally-open (NO) instantaneous contacts and 0 normally-closed (NC) contacts. No make-before-break, no delayed or lagging switching — straight 4 NO for signal feedback or interlocking."},{"question":"What compliance documentation does this part carry?","answer":"The substance prohibition date of 07/01/2006 aligns with RoHS compliance. Surge voltage resistance is rated at 6 kV. The SIRIUS series typically carries UL, CSA, and CE certifications, though specific marks for this order code should be verified from the nameplate."},{"question":"Will 3RH1344-1AL00 drop into a panel specified around 3RH2362-2AF00 without rewiring?","answer":"Both are size S00 auxiliary contactors from the SIRIUS family with the same 45 mm width and screw/snap-on mounting, so the mechanical footprint and DIN-rail clip are identical. The main difference is contact arrangement: 3RH1344-1AL00 is 4 NO, while 3RH2362-2AF00 has a different contact set — verify your circuit's NC requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AL00","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/3RH1344-1AL00 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}}