{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-3BB44-3MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-3BB44-3MA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-3BB44-3MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3BB44-3MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, 24 VDC coil, screw-type terminals, IP20 front protection, 70 x 146 x 201 mm.","salesMarkdown":"It mounts on standard 35 mm or 75 mm DIN rail using the screw-and-snap-on method, so it drops into any modern panel without custom bracketing. The screw-type main circuit terminals accept solid wire from 0.25 to 2.5 mm² (two conductors) and stranded up to 50 mm², giving you flexibility on wire gauge without needing special lugs. Front protection is IP20 with the cover or box terminal fitted — enough to keep fingers and tools out during commissioning, but not sealed against washdown. The terminal area itself is IP00, so plan for enclosure-level ingress protection if this goes into a wet or dusty environment. The coil pulls a steady 10 A at 24 VDC inrush, dropping to 0.8 A holding — that's the initial vs. full-scale value. At 60 VDC the inrush drops to 2 A, and at 220 VDC it's down to 0.3 A. This matters for your DC power supply sizing: a 24 VDC bus feeding multiple contactors needs headroom for the simultaneous inrush of all coils pulling 10 A each. The contactor is rated for 55 kW at 400 V and 25.4 kW at 690 V — typical three-phase motor loads. The AC-3 switching frequency tops out at 850 operations per hour, which covers most conveyor and pump duty cycles without overheating. If you're doing frequent reversing or plugging (AC-4), that drops to 250 ops/h, so plan accordingly. That means it's fine in a non-conditioned enclosure on the plant floor, but if it's sitting next to a furnace or oven, watch the ambient. The degree of pollution is 3 — conductive pollution is expected, so it's built for industrial environments, not clean rooms. The substance prohibitance date of 05/01/2012 confirms RoHS compliance for EU markets. No special documentation chase needed for cross-border sourcing — it carries the standard Siemens compliance package. At 70 mm wide, 146 mm tall, and 201 mm deep, this S3 frame contactor is sized for a standard 200 mm deep enclosure — no need for a deep back-panel. That's fast enough for most interlocking and safety circuits, but if you're coordinating with upstream breakers or fuses, make sure the short-circuit rating of your protective device clears before the contactor welds shut.","metaTitle":"Siemens SIRIUS 3RT1046-3BB44-3MA0 Power Contactor, Size S3,","metaDescription":"Siemens SIRIUS 3RT1046-3BB44-3MA0 power contactor, size S3, 24 VDC coil, screw terminals, IP20 front, active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"201 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":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","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=364185&mlfb=3RT1046-3BB44-3MA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-3BB44-3MA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor measures 70 mm wide, 146 mm tall, and 201 mm deep. It mounts on standard 35 mm or 75 mm DIN rail using screw-and-snap-on fastening, and supports side-by-side mounting without derating."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit screw terminals accept two conductors of solid wire from 0.25 to 2.5 mm², or two conductors of stranded wire from 10 to 50 mm². That covers everything from control wiring to motor power leads."},{"question":"What compliance documentation is available for this part?","answer":"The substance prohibitance date of 05/01/2012 confirms RoHS compliance. The part carries standard Siemens compliance documentation for EU and international markets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-3BB44-3MA0","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/3RT1046-3BB44-3MA0 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}}