{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-2BB44-3MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-2BB44-3MA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-2BB44-3MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2BB44-3MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 24 VDC coil, spring-loaded terminals, screw and snap-on mounting onto 35 mm DIN rail (DIN EN 50022).","salesMarkdown":"The coil is 24 VDC, pulling 3.3 W to close and 3.3 W to hold — a constant-grab DC coil, so the holding power is the same as the inrush. That matters for DC-supply sizing: it draws the full 3.3 W continuously, not a pulse then drop. The contactor is rated 3 kW at 400 V in AC-2 duty (slip-ring motor starting), and 6.5 A at 400 V in AC-4 duty (plugging/reversing). For AC-12 resistive loads, it handles 10 A. This contactor fits the S00 footprint: 45 mm wide, 60 mm tall, 114 mm deep. Side-by-side mounting is allowed without derating, with a 6 mm gap to the side for airflow. The spring-loaded main terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). The auxiliary contact block (2 instantaneous contacts) is integrated. For short-circuit coordination, Type 2 requires a 20 A gL/gG fuse; Type 1 allows a 35 A fuse.","metaTitle":"Siemens 3RT1015-2BB44-3MA0 SIRIUS Power Contactor, 24 VDC, S","metaDescription":"Siemens SIRIUS 3RT1015-2BB44-3MA0 power contactor, size S00, 24 VDC coil, spring-loaded terminals, AC-2 rated 3 kW at 400 V. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"114 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Size of contactor":"S00","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":"30 000 000","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":"3.5 kW","at 690 V rated value":"4 kW","Instantaneous Contact":"2","Side-by-side mounting":"Yes","For Main Current Circuit":"spring-loaded terminals","Single Or Multi-Stranded":"2x (0,25 ... 2,5 mm²)","at AC-2 at 400 V rated value":"3 kW","at AC-4 at 400 V rated value":"6.5 A","Closing power of magnet coil at DC":"3.3 W","Holding power of magnet coil at DC":"3.3 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (24 ... 14)","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"3","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"18 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"DC","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","Of The Contactor With Added Electronics-Compatible 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=282548&mlfb=3RT1015-2BB44-3MA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2BB44-3MA0/alternatives.json"},"ai":{"faq":[{"question":"What wire size does the spring-loaded terminal accept?","answer":"The main circuit spring terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG)."},{"question":"Can this replace a 3RT1015-1BB42 without rewiring?","answer":"No — this version has spring-loaded terminals on the main circuit, while the 3RT1015-1BB42 uses screw terminals. The mechanical footprint is the same S00, but the wiring interface is different, so a panel retrofit requires re-terminating the power wires."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-2BB44-3MA0","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/3RT1015-2BB44-3MA0 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}}