{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-2BK80","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-2BK80","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-2BK80","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2BK80","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 4 NO, size S00, 45 mm, screw and snap-on mounting, rated 10 A at 24 V, 6 A at 230 V, IP20 front.","salesMarkdown":"It gives you four normally-open instantaneous contacts, each rated for switching at the voltages you'd see in a typical 24 VDC or 230 VAC control panel: 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. The coil pulls 3.2 W DC to close and holds at the same power, so the thermal load on the panel stays predictable. Out here in the grease, on a lube route or a conveyor line, what that means is you've got a contactor that'll handle the signal side of a motor starter or a valve manifold without breaking a sweat. The IP20 front keeps fingers and tools off the terminals, and the -25 to +60 °C operating range covers most plant-floor conditions short of a freezer. It mounts by screw or snaps onto a DIN rail. The 45 mm width and 60 mm height match the S00 contactor footprint. Depth is 114 mm. Terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). Strip length is what you'd expect for a spring-cage or screw clamp — no special tooling. For compliance, it carries a RoHS substance prohibition date of July 1, 2006, which covers the EU RoHS directive. ## Contact reliability and switching life The contacts are rated for 10 million mechanical operations typical, and the contact reliability spec says one incorrect switching operation per 100 million at 17 V and 1 mA. That's the low-energy end — dry circuits, PLC inputs, signal-level loads. If you're switching a 24 VDC relay coil or a contactor coil, the 10 A rating at 24 V gives you plenty of headroom. Shock resistance is 10g for 5 ms and 5g for 10 ms — enough for most industrial machinery, including conveyors and pumps.","metaTitle":"Siemens 3RH1344-2BK80 SIRIUS Auxiliary Contactor, 4 NO, S00","metaDescription":"Siemens 3RH1344-2BK80 SIRIUS auxiliary contactor, 4 instantaneous NO contacts, size S00, 45 mm wide, screw and snap-on mounting, rated 10 A at 24 V, 6 A at 230 V, IP20 front. Curre","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":"52 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","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 E","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=361379&mlfb=3RH1344-2BK80","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-2BK80/alternatives.json"},"ai":{"faq":[{"question":"Does the 3RH1344-2BK80 drop into a panel specified around the 3RT6023-1BW40?","answer":"It shares the same S00 frame size and mounting footprint, so it will fit the same DIN rail and panel cutout. However, the 3RT6023-1BW40 is a power contactor with different contact ratings and coil characteristics — verify your control voltage and load requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-2BK80","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/3RH1344-2BK80 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}}