{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2344-1CU00-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2344-1CU00-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2344-1CU00-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2344-1CU00-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO contacts, 240 V AC 50/60 Hz coil, screw/snap-on 35 mm DIN rail, 57.5 x 45 x 117 mm.","salesMarkdown":"The Siemens 3RH2344-1CU00-0KA0 is a SIRIUS auxiliary contactor, size S00, with 4 normally-open instantaneous contacts. Dimensions are 57.5 mm high, 45 mm wide, 117 mm deep. ## Contact ratings — what they mean on the line Rated operational current is 10 A at 24 V, 6 A at 230 V AC, 3 A at 400 V AC, and 1 A at 690 V AC. These are the thermal continuous currents the contacts can handle at those voltages — not surge, not motor inrush. For DC switching: 4.7 A at 60 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V. That DC curve drops fast as voltage rises; don't expect 10 A DC at line voltage. That's a lot of cycles for a signal-level contactor — well into the millions before the spring stack or linkage wears. ## Integration — clearances and wiring That's tight-side-by-side spacing — you can gang multiple units on the rail without breathing room. Pollution degree 3, so it's rated for the conductive-dust environment of an industrial panel. Terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded. That covers most control-circuit wiring sizes. Fastening method is screw and snap-on — the screw terminals hold the wires, the snap-on clips lock it to the DIN rail. ## Compliance — RoHS date and environmental RoHS compliance date is 07/01/2006 — the part was designed to meet the original RoHS directive cutoff. That's standard for Siemens SIRIUS gear; the declaration covers the substance prohibitions in place at that date. Relative humidity minimum is 10 %. No upper bound listed in this record, but typical industrial contactors handle up to 95 % non-condensing.","metaTitle":"Siemens 3RH2344-1CU00-0KA0 SIRIUS Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS 3RH2344-1CU00-0KA0 auxiliary contactor, 4 instantaneous NO contacts, 240 V AC coil, 57.5 x 45 x 117 mm, DIN rail mount. Current production. Available 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":"4 ... 15 ms","at DC":"10 000 1/h","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","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 50 Hz rated value":"240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"240 V","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","Surge Voltage Resistance Rated Value":"6 kV","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","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 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)","with low demand rate according to SN 31920":"40 %","apparent holding power of magnet coil at AC":"5.7 VA","apparent pick-up power of magnet coil at AC":"37 VA","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":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","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","Inductive Power Factor With The Holding Power Of The Coil":"0.25","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=409014&mlfb=3RH2344-1CU00-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2344-1CU00-0KA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH2344-1CU00-0KA0 and what is the lead time?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest lead time and price."},{"question":"What are the mounting dimensions for 3RH2344-1CU00-0KA0?","answer":"57.5 mm high, 45 mm wide, 117 mm deep. Mounts on 35 mm DIN rail via screw and snap-on. Clearances: 10 mm up, down, and forward; 6 mm at sides."},{"question":"What compliance documentation does Siemens provide for this auxiliary contactor?","answer":"RoHS compliance date is 07/01/2006. The SIRIUS series typically carries UL, CSA, and CE declarations — confirm the specific certificate on the Siemens Industry Online Support portal against the order code."},{"question":"What is the rated current at 230 V AC for 3RH2344-1CU00-0KA0?","answer":"6 A at 230 V AC. Also rated 10 A at 24 V, 3 A at 400 V AC, and 1 A at 690 V AC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2344-1CU00-0KA0","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/3RH2344-1CU00-0KA0 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}}