{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-3BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-3BB40","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-3BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1046-3BB40 power contactor, S3 frame, 55 kW at 500 V AC-3, 24 VDC coil, screw terminals, IP20 front, active production.","salesMarkdown":"It is rated for 55 kW at 500 V in AC-3 duty (squirrel-cage motor starting) and 25.4 kW at 690 V, so it handles common European 400 V and 500 V motor circuits up to those power levels. The coil is 24 VDC, drawing 10 A at rated voltage — a standard PLC or safety relay output drives it directly with a free-wheel diode across the coil. Mounts via screw or snap-on onto 35 mm or 75 mm standard DIN rail — the S3 frame footprint is 70 mm wide, 146 mm high, 152 mm deep. The front terminals are IP20 rated with the cover installed, so the panel interior stays protected against accidental contact. Main circuit connections are screw-type terminals accepting 2x (10... 50 mm²) stranded or 2x (0.25... 2.5 mm²) solid — sized for the full 55 kW motor feed. Auxiliary contact terminals accept 2x (2.5... 16 mm²) solid or stranded.","metaTitle":"Siemens 3RT1046-3BB40 SIRIUS Power Contactor, 55 kW at 500 V","metaDescription":"Siemens 3RT1046-3BB40 SIRIUS power contactor, S3 frame, 55 kW at 500 V AC-3, 24 VDC coil, screw terminals, IP20 front, active production, RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"70 mm","at DC":"14 ... 20 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"24 V","On The Front":"IP20; IP20 on the front with cover / box terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","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","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Full-Scale Value":"1.1","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"55 kW","at 690 V rated value":"25.4 kW","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 W","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"45 kW","at AC-4 at 400 V rated value":"80 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"50 mm²","at 60 °C minimum permissible":"35 mm²","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"38 kW","at 690 V at 60 °C rated value":"114 kW","at 1000 V at 60 °C rated value":"98 W","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 160 A","closing power of magnet coil at DC":"15 W","holding power of magnet coil at DC":"15 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 250 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","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 (0.25 ... 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)","Thermal Short-Time Current Limited To 10 S":"760 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=145369&mlfb=3RT1046-3BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3BB40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"It is rated for 55 kW at 500 V AC-3, 25.4 kW at 690 V AC-3, and 80 A at 400 V AC-4. The coil is 24 VDC drawing 10 A. Mechanical life is typical 10 million operations."},{"question":"What compliance documentation does this part have?","answer":"RoHS compliance date is May 1, 2012. The front terminals are IP20 rated. The part is designed for pollution degree 3 environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-3BB40","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/3RT1046-3BB40 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}}