{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2446-1AB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2446-1AB00","canonicalUrl":"https://aoctrl.com/siemens/3RT2446-1AB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2446-1AB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2446-1AB00, S3 frame contactor, 140 x 70 x 152 mm, screw and snap-on mounting onto 35 mm DIN rail, auxiliary switch with 10 A at 24 V rated value.","salesMarkdown":"## SIRIUS S3 Contactor, Current Production At 140 mm high, 70 mm wide, and 152 mm deep, this S3 frame occupies a standard contactor footprint. The 70 mm width means it takes up three or four 22.5 mm-wide modular device slots on the DIN rail — plan your rail layout accordingly. Power circuit wiring accepts stranded conductors from 6 to 70 mm² — that's a serious lug range, covering everything from a 4 mm² motor feed up to a 70 mm² feeder. The coil and auxiliary terminals use screw-type terminals accepting 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded. Keep your ferrule sizes within that range for a reliable connection. ## Auxiliary Contact Ratings — What They Mean The built-in auxiliary switch is rated for different currents depending on the control voltage. At 24 V AC (50 Hz) it's rated 10 A — that's your typical PLC or relay coil load. For DC control circuits, the ratings are lower: 2 A at 48 V, 1 A at 110 V, and only 0.1 A at 600 V. These are the make/break capacities for the auxiliary contacts; don't assume the 10 A figure applies at higher voltages. The contactor carries one instantaneous auxiliary contact (NO or NC — the evidence doesn't specify which, but typically one NO on the base unit). ## Environmental and Coil Specs The coil is AC-operated at 24 V, 50 Hz — verify your control transformer matches.","metaTitle":"Siemens SIRIUS 3RT2446-1AB00 Contactor, S3 Frame, 70 mm","metaDescription":"Siemens SIRIUS 3RT2446-1AB00 contactor, S3 frame size, 140x70x152 mm. Screw/snap-on 35 mm DIN rail. Auxiliary contacts rated 10 A at 24 VAC. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"70 mm","at AC":"10 ... 21 ms","title":"3RT2446-1AB00","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.38","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","description":"contactor AC-1, 140 A, 690 V / 40 °C, 3-pole, 24 V AC, 50 Hz, auxiliary contacts: 1 NO + 1 NC, main circuit: box terminal, control and auxiliary circuit: screw terminal, size: S3","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","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":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"24 V","at 500 V rated value":"2 A","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Main Current Circuit":"box terminal","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"29.4 W","Substance Prohibitance (Date)":"03/01/2017","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"650 1/h","With Type Of Coordination 1 Required":"gG: 250 A (690 V,100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"9.8 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Type Of Voltage For Main Current Circuit":"AC","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","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":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"AC","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"50 mm²","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (230 V, 400 A)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b565132adc8ca4f5501331a77657e7cf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630059&mlfb=3RT2446-1AB00"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor measures 140 mm high, 70 mm wide, and 152 mm deep. Clearance requirements are 10 mm upwards, 10 mm downwards, 20 mm forwards, and 10 mm at the side."},{"question":"What wire sizes does the main power circuit accept?","answer":"The power terminals accept stranded conductors from 6 mm² up to 70 mm². The coil and auxiliary terminals use screw-type terminals for 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded wire."},{"question":"What is the auxiliary contact rating at 24 V AC?","answer":"The auxiliary switch is rated 10 A at 24 V AC (50 Hz). Ratings decrease at higher voltages: 6 A at 230 V AC, 3 A at 400 V AC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2446-1AB00","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/3RT2446-1AB00 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}}