{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AU00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AU00","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AU00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1344-1AU00, 4 NO instantaneous contacts, 10 A AC-12 rated, screw and snap-on mounting, 45 mm width.","salesMarkdown":"It's the part you add to a contactor or a contactor assembly when you need extra signal feedback or control-circuit isolation — the 4 NO contacts give you four independent dry-contact paths, each rated 10 A at 24 V and 10 A in AC-12 duty, which covers most PLC input and relay-coil switching in a panel. Front face is IP20 — fine for a closed panel, not for washdown areas. The 10 A AC-12 rating (resistive load at 24 V) is the headline number, but the real-world switching capability drops as voltage climbs: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. That's typical for a S00 auxiliary block — the contacts are sized for control-circuit duty, not motor power. At 110 V it's still good for 1 A; at 220 V it's 0.27 A. If you're switching a 24 VDC PLC input, the full 10 A is there. For 400 VAC control transformers, stay under 3 A per contact. Shock-rated at 10 g for 5 ms and 5 g for 10 ms — tough enough for most industrial machinery but not for extreme vibration environments. Maximum operating altitude 2 000 m, which covers most plants outside high-altitude mining or mountain installations. Terminals accept solid wire: 2x 0.5...1.5 mm², 2x 0.75...2.5 mm², or 2x 4 mm². That covers standard control wiring from 18 AWG to about 12 AWG. No special tools beyond a screwdriver; the screw terminals are the same as the S00 contactor base.","metaTitle":"Siemens 3RH1344-1AU00 SIRIUS Auxiliary Contactor, 4 NO, 10A","metaDescription":"Siemens SIRIUS 3RH1344-1AU00 auxiliary contactor, size S00, 4 instantaneous NO contacts, 10A AC-12, 45mm wide, IP20 front. Current lifecycle, available 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","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"0 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"No","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","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","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","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 61346-2":"K","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","With Degree Of Pollution 3 Rated Value":"690 V","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","Apparent holding power of magnet coil at AC":"4.6 V·A","Apparent pick-up power of magnet coil at AC":"27 V·A","Of Auxiliary Contacts Instantaneous Contact":"0","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","Inductive power factor with the holding power of the coil":"0.27","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=329038&mlfb=3RH1344-1AU00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1344-1AU00?","answer":"We source it to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for a firm position."},{"question":"What are the key contact ratings for 3RH1344-1AU00?","answer":"Four NO contacts, each rated 10 A at 24 V and 10 A AC-12. At higher voltages: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. At 110 V it's 1 A; at 220 V it's 0.27 A."},{"question":"Will 3RH1344-1AU00 fit a panel designed for a S00 contactor?","answer":"Yes — same 45 mm width, same screw/snap-on DIN-rail mount, same S00 footprint. It clips directly onto the side of a S00 contactor or mounts standalone on the rail."},{"question":"What is the depth of 3RH1344-1AU00?","answer":"111 mm deep, 45 mm wide, 57.5 mm tall. That's the standard S00 auxiliary block envelope — fits most 200 mm deep enclosures with clearance for wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AU00","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 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}}