{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2046-3AG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2046-3AG20","canonicalUrl":"https://aoctrl.com/siemens/3RT2046-3AG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2046-3AG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT2046-3AG20, 20 hp at 230 V, spring-type coil terminals, screw and snap-on 35 mm DIN rail mount, auxiliary switch included.","salesMarkdown":"It's a three-pole main contact device with an integrated auxiliary switch, sized for panel builders who need a known footprint and a spring-type coil terminal that accepts 2.5 to 16 mm² solid or 6 to 70 mm² stranded wire. The contactor mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward and backward. That flexibility matters when you're squeezing it into a tight sub-panel or reusing an existing backplate layout. The 20 hp at 230 V rating tells you this contactor handles a typical 3-phase induction motor up to that power on a 230 V line. For a 400 V supply, the auxiliary contact is rated at 3 A, which covers most PLC or relay pilot-duty loads. Operating frequency matters: AC-3 duty (standard motor switching) maxes at 850 operations per hour, while AC-4 (plugging or inching) drops to 250 per hour. If your application involves frequent reversing or jogging, that AC-4 limit is the real constraint — not the AC-3 number. That -25 °C floor means it's fine for unheated enclosures in most temperate climates, but if your panel sits in a freezer or arctic environment, you'll need to verify the coil pickup at lower ambients. The S3 frame measures 70 mm wide, 140 mm tall, and 152 mm deep. That depth is the dimension you need to check against enclosure clearance — 152 mm plus the 20 mm forward clearance means you need about 172 mm from DIN rail to door or back wall. Side clearance is 10 mm, and vertical clearance (up/down) is also 10 mm. The coil connection uses spring-type terminals — no screw tightening, just push the ferrule or stripped wire in. Main circuit wiring accepts 2.5 to 16 mm² solid or 6 to 70 mm² stranded. The auxiliary switch contacts are rated for 10 A at 24 V, 2 A at 48 V, 1 A at 110 V, and 0.9 A at 125 V — enough for most PLC input sensing or relay coil drives.","metaTitle":"Siemens 3RT2046-3AG20 SIRIUS Power Contactor, S3, 20 hp at 2","metaDescription":"Siemens 3RT2046-3AG20 SIRIUS S3 power contactor, 20 hp at 230 V, spring-type coil terminals, screw and snap-on DIN rail mount. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"10 ... 21 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.35","at 60 Hz":"0.41","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"900 1/h","at AC-2 maximum":"350 1/h","at AC-3 maximum":"850 1/h","at AC-4 maximum":"250 1/h","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","at AC-3e maximum":"850 1/h","For Main Contacts":"10 ... 2","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 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power 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":"20 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.8 A","at 480 V rated value":"96 A","at 50 Hz rated value":"110 V","at 500 V rated value":"2 A","at 60 Hz rated value":"110 V","at 600 V rated value":"77 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 kW","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"10 hp","at 200/208 V rated value":"30 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"75 hp","at 575/600 V rated value":"75 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"19.8 W","at AC-2 at 400 V rated value":"45 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"80 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"03/01/2017","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2)","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"114 A","at AC-5b up to 400 V rated value":"95 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 160 A (690 V, 100 kA), aM: 100 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","Without Load Current Share Typical":"25 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"6.6 W","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)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"1 725 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 297 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"946 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"610 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"486 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","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","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629903&mlfb=3RT2046-3AG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2046-3AG20/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT2046-3AG20?","answer":"Submit an RFQ through this listing. The part is sourced to order against your request, and current pricing and availability are confirmed at quote time."},{"question":"What are the key dimensions for panel layout?","answer":"The S3 frame is 70 mm wide, 140 mm high, and 152 mm deep. Allow 20 mm forward clearance, 10 mm side clearance, and 10 mm vertical clearance."},{"question":"What wire sizes does this contactor accept?","answer":"Main circuit terminals accept 2.5 to 16 mm² solid or 6 to 70 mm² stranded wire. The auxiliary switch terminals accept 2x (0.5 to 2.5 mm²) solid or stranded."},{"question":"Does 3RT2046-3AG20 include an auxiliary contact?","answer":"Yes, it has an integrated auxiliary switch. The contact ratings are 10 A at 24 V, 2 A at 48 V, 1 A at 110 V, and 0.9 A at 125 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2046-3AG20","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/3RT2046-3AG20 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}}