{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2344-1DM40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2344-1DM40","canonicalUrl":"https://aoctrl.com/siemens/3RH2344-1DM40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2344-1DM40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, 220 V rated insulation voltage, varistor surge suppression, screw and snap-on mounting for 35 mm DIN rail.","salesMarkdown":"The 4 NO contacts carry different currents depending on the switching voltage — a key detail for control transformers or PLC input isolation. At 24 V the rated operational current is 10 A; at 60 V it drops to 4.7 A; at 110 V it is 3 A; at 220 V it is 1.2 A; at 230 V it is 6 A; at 400 V it is 3 A; at 440 V it is 0.5 A; at 500 V it is 2 A; at 600 V it is 0.26 A; and at 690 V it is 1 A. These are not all the same curve — the 230 V and 400 V figures are higher than the 220 V and 440 V ones, so verify your actual control voltage against the correct row. ## Physical Integration and Wiring The contactor measures 45 mm wide, 57.5 mm tall, and 117 mm deep — the depth is the dimension that extends into the enclosure, so check your cabinet depth against that 117 mm plus wiring clearance. Terminals accept solid or stranded copper: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². The closing power of the magnet coil at DC is 4 W.","metaTitle":"Siemens 3RH2344-1DM40 SIRIUS Auxiliary Contactor, 4 NO, S00","metaDescription":"Siemens SIRIUS 3RH2344-1DM40 auxiliary contactor, size S00, 4 NO contacts, 220 V rated insulation voltage, varistor surge suppression. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"117 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"220 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Full-Scale Value":"1.1","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","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"4","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"with varistor","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","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)","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","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","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"44 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/51a0d00ee5b87331d4035a5337d6520e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=355657&mlfb=3RH2344-1DM40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2344-1DM40/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of the 3RH2344-1DM40?","answer":"Width is 45 mm, height is 57.5 mm, and depth is 117 mm. Clearance to grounded parts: 10 mm upwards, forwards, and downwards; 6 mm at the sides."},{"question":"What compliance documentation is available for this part?","answer":"The part is RoHS compliant with a substance prohibition date of July 1, 2006. It is a Siemens SIRIUS product; standard manufacturer declarations for CE, UKCA, and UL are typically provided with the shipment. The pollution degree is 3 per IEC 60947-1."},{"question":"Will the 3RH2344-1DM40 fit a panel designed for the 3RH2422-1AB00?","answer":"Not without checking the mounting footprint and contact count. The 3RH2344-1DM40 is size S00; the 3RH2422-1AB00 is a different frame. Both snap onto 35 mm DIN rail, but the terminal layout and depth may differ. Compare the dimensional drawings before committing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2344-1DM40","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/3RH2344-1DM40 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}}