{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-1MB42-0KT0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-1MB42-0KT0","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-1MB42-0KT0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1MB42-0KT0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1015-1MB42-0KT0, Size S00, 24 VDC coil, screw terminals, IP20, 45 mm width.","salesMarkdown":"The Siemens 3RT1015-1MB42-0KT0 is a SIRIUS power contactor in the compact Size S00 frame, switching motor loads up to 3 kW in AC-2 duty at 400 V or 6.5 A in AC-4 duty at 400 V. The magnet coil is rated 24 VDC with a holding power of 1.4 W — a fixed DC coil that pulls in and seals at the same power, so there is no AC inrush to budget for on the 24 V supply. Screw-type terminals on the main circuit accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) — solid or stranded — and the AWG equivalents run 2x (20 to 16), 2x (18 to 14), or 1x 12. The 45 mm width, 57.5 mm height, and 72 mm depth fit the standard Size S00 footprint — a direct swap into any panel laid out for this frame. ## Coordination and short-circuit protection The mechanical endurance is 30 million operating cycles — typical for a Size S00 contactor in light-duty switching.","metaTitle":"Siemens 3RT1015-1MB42-0KT0 SIRIUS Power Contactor, 24 VDC, S","metaDescription":"Siemens SIRIUS 3RT1015-1MB42-0KT0 power contactor, Size S00, 24 VDC coil, 10 A rated at 24 V. Screw terminals, IP20, DIN rail mount. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.82","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":"2.15","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":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 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":"1.4 W","Holding power of magnet coil at DC":"1.4 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"18 A","Type of voltage of the control supply voltage":"DC","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$226.28","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=527360&mlfb=3RT1015-1MB42-0KT0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1MB42-0KT0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1015-1MB42-0KT0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"Will 3RT1015-1MB42-0KT0 drop into a panel specified around 3RT1015-1BB42?","answer":"Both are Size S00 contactors with the same 45 mm width, 57.5 mm height, and 72 mm depth, and both mount on 35 mm DIN rail. The key difference is the coil: the 1MB42 variant is 24 VDC, while the 1BB42 is 24 VAC (50/60 Hz). If the panel was wired for AC coil control, the DC coil will not operate — check the control voltage before substituting."},{"question":"What is the depth of 3RT1015-1MB42-0KT0?","answer":"The depth is 72 mm, which is standard for the Size S00 frame."},{"question":"What wire sizes does the 3RT1015-1MB42-0KT0 accept?","answer":"The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded. AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-1MB42-0KT0","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/3RT1015-1MB42-0KT0 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}}