{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1033-1BB40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1033-1BB40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1033-1BB40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1033-1BB40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT1033-1BB40-1AA0, 24 VDC coil, screw-type terminals, 55 mm wide, snap-on DIN rail mount.","salesMarkdown":"AC-4 at 400 V is 15.5 A, covering plugging and inching duty where the contactor opens under full motor current. That's fast enough for most sequencing applications but worth noting if you're coordinating with PLC scan cycles or safety relay timing. The enclosure is IP20 on the front, IP00 at the terminals — meaning the wiring zone needs to be inside a cabinet or protected from accidental contact. RoHS compliance date is May 1, 2012, so it meets the EU directive. No UL or CSA marks are listed in the spec sheet, but the SIRIUS line typically carries IEC ratings for global panels. If your project requires a specific agency approval, confirm at quote time. Dimensions are 55 mm wide, 112 mm high, 130 mm deep. That's a standard S2 footprint — it shares the same mounting hole pattern and terminal layout as other SIRIUS S2 contactors, so swapping in a different coil voltage or auxiliary block doesn't require re-drilling the subpanel. That gives flexibility for both control wiring (smaller gauges) and power wiring (larger gauges) without needing adapter lugs.","metaTitle":"Siemens 3RT1033-1BB40-1AA0 SIRIUS S2 Power Contactor, 24 VDC","metaDescription":"Siemens SIRIUS 3RT1033-1BB40-1AA0 S2 power contactor, 24 VDC coil (10 A holding). AC-2 rated 15 kW at 400 V. Screw terminals, DIN rail snap-on. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 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":"112 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":"11 kW","at 690 V rated value":"9.5 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":"15.5 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":"15 kW","at 690 V at 60 °C rated value":"40 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":"200 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":"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=537927&mlfb=3RT1033-1BB40-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1033-1BB40-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RT1033-1BB40-1AA0?","answer":"The 3RT1044-1FB46 is a physically larger SIRIUS contactor (S3 frame vs S2) with a different coil voltage and higher current ratings. It will not drop into the same DIN rail footprint without panel modification — the mounting hole pattern and width differ. For a direct swap, stay within the S2 frame and 24 VDC coil family."},{"question":"Where can I buy 3RT1033-1BB40-1AA0 and how is it quoted?","answer":"Sourced and quoted to order through independent industrial distribution. Availability and current pricing are confirmed at quote time against an RFQ — no stock count or price is published here."},{"question":"What compliance documentation does this contactor carry?","answer":"RoHS compliance is confirmed with a substance prohibition date of May 1, 2012. The SIRIUS series is designed to IEC standards; specific UL, CSA, or CCC certifications are not listed in the spec sheet and should be verified against the project's requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1033-1BB40-1AA0","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/3RT1033-1BB40-1AA0 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}}