{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AN20-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AN20-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AN20-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AN20-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1344-1AN20-0KA0 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, rated 10 A at 24 V.","salesMarkdown":"It carries four normally-open instantaneous contacts, meaning all four close the instant the coil pulls in, with no intentional delay. The S00 frame size keeps the footprint tight at 45 mm wide, so it fits into crowded DIN-rail panels without chewing up gland-plate real estate. Mounting is screw-fixed or snap-on onto a DIN rail, and the enclosure front is IP20. For AC loads, the contactor is rated at 6 A at 230 V and 3 A at 400 V, which covers most 50/60 Hz pilot circuits. The solid wire capacity is 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² — that's the range for the screw terminals. The 4 mm² option lets you daisy-chain two larger wires per terminal, which is useful when looping the control supply through multiple contactors in a row. RoHS compliance is documented with a substance prohibition date of 07/01/2006, covering the EU RoHS directive. That means it fits in panels where the rail is oriented oddly or where clearance forces a tilt. Shock resistance is 10g at 5 ms and 5g at 10 ms — enough for most industrial machinery but not for extreme vibration environments like a crusher or shaker table. The depth is 111 mm, height 57.5 mm, width 45 mm.","metaTitle":"Siemens 3RH1344-1AN20-0KA0 SIRIUS Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS 3RH1344-1AN20-0KA0 auxiliary contactor, 4 NO contacts, size S00, screw/snap-on mount, IP20 front, 10A at 24V. Current production. Sourced 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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"220 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 V","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","Surge Voltage Resistance Rated Value":"6 kV","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 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)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","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":"AC","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"44","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Inductive Power Factor With The Holding Power Of The Coil":"0.27","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"}},"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=362941&mlfb=3RH1344-1AN20-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AN20-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this contactor?","answer":"The depth is 111 mm. That's the dimension from the DIN-rail mounting surface to the front of the housing, including the terminals."},{"question":"What wire sizes does the terminal accept?","answer":"The screw terminals accept solid wire in these combinations: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². That covers standard control wiring from signal-level to power-distribution runs."},{"question":"Will this drop into a panel specified around 3RH2422-1AB00 without rewiring?","answer":"Not without checking the contact arrangement. The 3RH2422-1AB00 typically has a mix of NO and NC contacts, while this part has four NO contacts. If your circuit needs normally-closed contacts, you would need to add an external interposing relay or select a different variant. The physical footprint (S00, 45 mm wide) and mounting are the same, so the mechanical swap is straightforward — the electrical difference is the deciding factor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AN20-0KA0","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/3RH1344-1AN20-0KA0 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}}