{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2446-1NB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2446-1NB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2446-1NB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2446-1NB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 contactor, 3RT2446-1NB30, 20-33 V AC/DC coil, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail (DIN EN 60715), size S3.","salesMarkdown":"The S3 frame size means it handles the higher current range within the SIRIUS family, with stranded wire capacity up to 70 mm² on the power terminals. ## Coil and control voltage: what the 20-33 V AC/DC rating means The coil accepts both AC and DC control voltage across a 20-33 V range. That dual-voltage flexibility simplifies panel wiring — you don't need separate coil variants for AC vs DC control circuits. At 24 V rated value, the inrush current peak hits 6.5 A, with a holding draw of 3.5 VA at both 50 Hz and 60 Hz. ## Mounting and clearances: panel integration notes That helps when fitting into tight or oddly oriented enclosures. The dimensions are 140 mm high, 70 mm wide, and 152 mm deep — check your enclosure depth before committing, because 152 mm is a bit deeper than some S2 frames. ## Terminal capacity and auxiliary contacts Power terminals accept stranded wire from 6 mm² up to 70 mm² — that covers a wide range of motor feeder sizes. The coil terminals are screw-type, accepting solid or stranded conductors: 2x (0.5-1.5 mm²) or 2x (0.75-2.5 mm²). The contactor comes equipped with an auxiliary switch, so you have a feedback contact for status indication without buying a separate aux block. ## Environmental range","metaTitle":"Siemens 3RT2446-1NB30 SIRIUS Contactor, S3, 20-33V AC/DC Coi","metaDescription":"Siemens SIRIUS 3RT2446-1NB30 contactor, size S3, 20-33V AC/DC coil. Active production. Screw & snap-on 35mm DIN rail. 6-70mm² stranded. Available to order, quoted on request.","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":"38 ... 57 ms","at DC":"38 ... 57 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"3.5 VA","at 60 Hz":"3.5 VA","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"20 ... 33 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC/DC","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","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":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"6.5 A","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":"20 ... 33 V","at 500 V rated value":"2 A","at 60 Hz rated value":"20 ... 33 V","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","Locked-Rotor Current Peak":"6.5 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"75 mA","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"29.4 W","Substance Prohibitance (Date)":"04/27/2017","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"3.2 A","Duration Of Locked-Rotor Current":"150 ms","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)","Without Load Current Share Typical":"1.8 W","closing power of magnet coil at DC":"76 W","holding power of magnet coil at DC":"1.8 W","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/DC","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,"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=630070&mlfb=3RT2446-1NB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2446-1NB30/alternatives.json"},"ai":{"faq":[{"question":"What is the coil voltage range for 3RT2446-1NB30?","answer":"The coil accepts 20-33 V AC/DC, so it works on either 24 V AC or 24 V DC control circuits without needing a different coil variant."},{"question":"How does 3RT2446-1NB30 mount in a panel?","answer":"It screws or snaps onto standard 35 mm DIN rail per DIN EN 60715. Mounting position is flexible: +/-180° rotation on a vertical surface, and tilt up to +/-22.5° forward/backward."},{"question":"Where can I buy 3RT2446-1NB30 and how is it quoted?","answer":"This contactor is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock figures or price lists on this page."},{"question":"What wire sizes does 3RT2446-1NB30 accept on the power terminals?","answer":"Stranded wire from 6 mm² up to 70 mm². The coil terminals accept solid or stranded: 2x (0.5-1.5 mm²) or 2x (0.75-2.5 mm²) with screw-type connections."},{"question":"Does 3RT2446-1NB30 come with an auxiliary switch?","answer":"Yes, it is equipped with an auxiliary switch for status feedback — no separate aux block needed for basic indication."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2446-1NB30","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/3RT2446-1NB30 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}}