{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2344-1AP00-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2344-1AP00-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2344-1AP00-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2344-1AP00-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2344-1AP00-0KA0 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting on 35 mm DIN rail, 117 mm depth, 45 mm width, 57.5 mm height.","salesMarkdown":"## What the 4 NO contacts and 10 A rating mean for your control circuit The 3RH2344-1AP00-0KA0 is a SIRIUS auxiliary contactor with four normally-open instantaneous contacts, meaning it switches four separate control circuits simultaneously without any built-in delay. For a 24 VDC PLC output or relay interposing circuit, those four NO poles give you plenty of isolation between signals without needing a separate terminal block. The contactor is rated for 10 million mechanical operations typical, so in a machine that cycles once per minute you are looking at roughly 19 years of service before the mechanism wears out. The arcing time sits between 10 and 15 ms, which is standard for this class of auxiliary contactor and means the downstream PLC input filter needs to be set longer than that to catch a clean signal. ## Panel fit and DIN rail mounting — size S00 footprint That means you can pack these side-by-side on the rail with just a finger's width between them, which matters when you are squeezing a dozen auxiliary contactors into a small sub-panel. ## Lifecycle and sourcing — still in current production That means you can spec it into a new BOM without worrying about a last-time-buy window closing. For volume purchases or project quotes, this part is sourced through authorized distribution channels and quoted to order against your BOM quantity; lead time and pricing are confirmed at RFQ time.","metaTitle":"Siemens 3RH2344-1AP00-0KA0 SIRIUS Auxiliary Contactor, 4 NO","metaDescription":"Siemens 3RH2344-1AP00-0KA0 SIRIUS auxiliary contactor, size S00, 4 NO contacts. Rated 10 A at 24 V. Screw and snap-on mounting on 35 mm DIN rail.","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","title":"3RH2344-1AP00-0KA0","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","description":"Contactor relay, 4 NO + 4 NC, 230 V AC, 50 / 60 Hz, Size S00, screw terminal, Removable auxiliary switch EN 50005","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":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 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)":"10/01/2009","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/66be4cbcc3ef55bf5648f7c73556d175.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=285699&mlfb=3RH2344-1AP00-0KA0"},"ai":{"faq":[{"question":"What is the 3RH2344-1AP00-0KA0 used for?","answer":"It is an auxiliary contactor — it switches control signals rather than motor loads. The four NO contacts are typically used to extend PLC outputs, interlock safety circuits, or signal status back to a controller. In a motor starter setup, it can be mechanically interlocked with a main contactor to provide auxiliary feedback contacts."},{"question":"What are the operating temperature limits for this contactor?","answer":"The relative humidity minimum is 10 %. These limits cover most indoor industrial panel environments without derating concerns."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2344-1AP00-0KA0","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/3RH2344-1AP00-0KA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}