{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-1BP44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-1BP44","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-1BP44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1BP44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1046-1BP44, Size S3, screw-type terminals, 80 A at AC-4 / 45 kW at AC-2 400 V, snap-on mounting.","salesMarkdown":"Its headline AC-4 rating of 80 A at 400 V tells you the contactor is built for the most severe duty — plugging and inching of squirrel-cage motors, where the contacts must break full locked-rotor current. For less demanding AC-2 duty (starting and running slip-ring motors), it carries 45 kW at 400 V. The screw-type main terminals accept stranded conductors up to 2x 50 mm², so it handles the cable sizes typical of 45–80 A motor branches without a terminal adapter. Mounting is flexible: the contactor snaps onto 35 mm or 75 mm DIN rail, or can be screw-fastened to a backplate. Side-by-side mounting is permitted, which saves panel width when ganging multiple contactors on a common bus. The IP20 enclosure on the front with the box terminal means the live parts are touch-safe in a standard IP54 cabinet; the terminal body itself is IP00, so the wiring compartment must be inside the enclosure. The screw-type terminals on the main circuit accept solid conductors from 2x (0.5 to 1.5 mm²) up to 2x (0.75 to 4 mm²) for control wiring, and stranded conductors from 2x (2.5 to 16 mm²) up to 2x (10 to 50 mm²) for power. The auxiliary contact block is wired separately through the front-facing terminals. Dimensions are 146 mm height, 70 mm width, and 201 mm depth. The 70 mm width matches the standard Size S3 footprint, so it occupies the same DIN-rail space as other S3 contactors from the SIRIUS family.","metaTitle":"Siemens 3RT1046-1BP44 SIRIUS Power Contactor, Size S3, 80 A","metaDescription":"Siemens 3RT1046-1BP44 SIRIUS power contactor, Size S3, rated 80 A at AC-4 / 45 kW AC-2 at 400 V. Screw terminals, snap-on mounting. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"201 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"70 mm","at DC":"14 ... 20 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"230 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":"screw-type 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 (10 ... 35 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=213601&mlfb=3RT1046-1BP44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1BP44/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT1046-1BP44 and get a price?","answer":"The 3RT1046-1BP44 is sourced and quoted to order against an RFQ. Submit a request through the storefront; availability and current pricing are confirmed at quote time."},{"question":"What are the key motor ratings for the 3RT1046-1BP44?","answer":"The contactor is rated 45 kW at AC-2 400 V for slip-ring motor duty, and 80 A at AC-4 400 V for the most severe plugging and inching service. At 500 V it delivers 55 kW, and at 690 V it delivers 25.4 kW."},{"question":"What compliance documentation does the 3RT1046-1BP44 carry?","answer":"The contactor has a RoHS substance prohibition date of 05/01/2012, confirming compliance with the EU RoHS directive. It carries an IP20 rating on the front with the box terminal, and is designed for pollution degree 3 environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-1BP44","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/3RT1046-1BP44 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}}