{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1BB44-0AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1BB44-0AA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1BB44-0AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1BB44-0AA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1034-1BB44-0AA2, Size S2 power contactor, 24 VDC coil, screw-type terminals, IP20 front / IP00 terminal protection, 55 mm width, 179 mm depth.","salesMarkdown":"The Siemens SIRIUS 3RT1034-1BB44-0AA2 is a Size S2 power contactor rated for switching motor loads up to 18.5 kW at 500 V (AC-3) and 10 kW at 690 V (AC-3). Screw-type terminals on the main circuit accept solid conductors up to 2x (0.75... 4 mm²) and stranded up to 2x (0.75... 25 mm²). Front-side protection is IP20 (finger-safe), while the terminal area is IP00 — panel builders must ensure the wiring compartment is within an enclosure or guarded against accidental contact. ## Switching performance and duty-cycle limits AC-3 motor switching is rated at 1 000 operations per hour maximum; AC-1 resistive loads allow 1 200 ops/h. For demanding reversing or inching applications (AC-4), the limit drops to 250 ops/h. Mechanical endurance is 10 million cycles typical. DC switching capability covers common control voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. Rated for pollution degree 3 (industrial environments with conductive or dry non-conductive pollution). As a SIRIUS series product, it carries the usual Siemens compliance documentation package (CE, UKCA, EAC, and UL/CSA certifications available on request). Dimensions: 55 mm wide, 139 mm high, 179 mm deep — fits standard S2 contactor footprint. Screw-type terminals for the main circuit accept solid conductors 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), max. 2x (0.75... 4 mm²); stranded conductors 2x (0.75... 25 mm²); solid or stranded 2x (0.75... 16 mm²). Minimum permissible cross-section at 40 °C is 16 mm². The coil is 24 VDC rated. For DC switching, verify the free-wheel diode polarity on any inductive load downstream — the contactor's own coil suppression is built in, but external loads need their own flyback protection.","metaTitle":"Siemens SIRIUS 3RT1034-1BB44-0AA2 Power Contactor, Size S2,","metaDescription":"Siemens SIRIUS 3RT1034-1BB44-0AA2 power contactor, Size S2, 24 VDC coil, screw terminals, 55 mm wide, IP20 front. Rated for motor loads up to 18.5 kW at 500 V. Active production. S","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"179 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"55 mm","at DC":"20 ... 30 ms","Height":"139 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"1 000 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 standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.1","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 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":"18.5 kW","at 690 V rated value":"10 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"15 kW","at AC-4 at 400 V rated value":"29 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"18 kW","at 690 V at 60 °C rated value":"54 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 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":"320 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 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":"$783.25","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=149379&mlfb=3RT1034-1BB44-0AA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1BB44-0AA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1034-1BB44-0AA2 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What is the closest functional second-source to 3RT1034-1BB44-0AA2?","answer":"The 3RT1044-1FB46 is a larger-frame SIRIUS contactor (Size S3 vs S2) with a different coil voltage and terminal arrangement — it will not drop into the same panel footprint without rewiring and enclosure modifications. For a direct form-fit-function replacement, stay within the S2 frame family with the same coil voltage."},{"question":"What compliance documentation does Siemens provide for 3RT1034-1BB44-0AA2?","answer":"RoHS compliance is confirmed with a substance prohibition date of 05/01/2012. The SIRIUS series typically carries CE, UKCA, EAC, and UL/CSA certifications; specific certificates are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1BB44-0AA2","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/3RT1034-1BB44-0AA2 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}}