{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1535-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1535-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RT1535-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1535-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1535-1BB40, 24 VDC coil, 40 A rated per NO/NC contact, screw-type terminals, DIN-rail mount.","salesMarkdown":"## SIRIUS S2 Contactor for 24 VDC Control The 40 A rating per contact covers motor starting and general switching in control panels. The 24 VDC coil is standard for PLC-driven or safety-relay control circuits, with a pickup voltage of 0.8 x rated (19.2 V) and a dropout at 1.1 x rated (26.4 V) — wide enough to ride through a sagging 24 V supply. Main circuit terminals accept stranded conductors from 2x (0.75... 25 mm²) or solid from 2x (0.5... 1.5 mm²) up to 2x (0.75... 4 mm²). Auxiliary and control terminals share the same screw-type design. AWG equivalents for the main contacts are 2x (18... 2).","metaTitle":"Siemens 3RT1535-1BB40 SIRIUS Power Contactor, 24 VDC Coil, 4","metaDescription":"Siemens SIRIUS 3RT1535-1BB40 power contactor, size S2, 24 VDC coil, 40 A rated per contact, screw terminals. DIN-rail mount. Active production. Available 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":"73 mm","at DC":"15 ... 30 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 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","Mounting Position":"with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back","Size Of Contactor":"S2","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","Product Brand Name":"SIRIUS","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 440 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","per NC contact rated value":"40 A","per NO contact rated value":"40 A","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"05/01/2012","at AWG cables for main contacts":"2x (18 ... 2)","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","at DC at 24 V maximum permissible":"0.038 A","With Type Of Assignment 2 Required":"fuse gL/gG: 80 A","at 24 V per NC contact rated value":"50 A","at 24 V per NO contact rated value":"50 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"12.5 A","at 110 V per NO contact rated value":"25 A","at 220 V per NC contact rated value":"2.5 A","at 220 V per NO contact rated value":"5 A","at 230 V per NC contact rated value":"9.5 kW","at 230 V per NO contact rated value":"9.5 kW","at 400 V per NC contact rated value":"18.5 kW","at 400 V per NO contact rated value":"18.5 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","With Type Of Coordination 1 Required":"fuse gL/gG: 160 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":"2","number of NO contacts for main contacts":"2","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":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"60 A","at ambient temperature 60 °C rated value":"55 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","for 3-phase AC motor at 460/480 V rated value":"25 hp","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","minimum cross-section in main circuit at maximum AC-1 rated value":"16 mm²","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","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"2.6 W"}},"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=328947&mlfb=3RT1535-1BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1535-1BB40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 3RT1535-1BB40?","answer":"It is a size S2 power contactor with a 24 VDC coil, rated 40 A per NO/NC contact, with 6 kV impulse withstand on main and auxiliary circuits. Screw terminals accept up to 25 mm² stranded on the main circuit."},{"question":"Where can I buy the 3RT1535-1BB40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for the 3RT1535-1BB40?","answer":"RoHS compliance is confirmed with a substance prohibition date of 05/01/2012, covering REACH and similar EU restricted-substance regulations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1535-1BB40","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/3RT1535-1BB40 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}}