{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-2KB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-2KB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-2KB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2KB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1015-2KB42 power contactor, Size S00, 24 V DC coil, spring-loaded terminals, IP20 front and terminal, 45 x 60 x 73 mm.","salesMarkdown":"Its 24 V DC coil draws 2.3 W on both pick-up and hold. The 45 mm wide body snaps onto a 35 mm DIN rail per EN 50022, and the spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded wire, or 2x (24 to 14 AWG). Rated operational current is 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and the contactor handles motor loads up to 3.5 kW at 500 V and 4 kW at 690 V. For AC-4 duty (plugging, inching) at 400 V it's rated 6.5 A. ## Coordination and surge suppression Built-in varistor surge suppression across the coil means you don't need an external RC snubber for most PLC or relay driver outputs — the varistor clamps the inductive kick. For fuse coordination, Type 2 (no damage) requires a gL/gG 20 A fuse upstream; Type 1 (short-circuit withstand only) allows a 35 A gL/gG. That's the selectivity call a panel builder needs before laying out the feeder. IP20 on the front and terminals keeps fingers out but expects enclosure protection against liquids. Substance prohibition per RoHS applies from 01 July 2006 — the contactor is RoHS-compliant. For a maintenance technician or QA doc controller, the manufacturer provides a declaration of conformity covering the Low Voltage Directive and applicable EN standards; no UL or CSA mark is listed in the evidence, so verify with your local Siemens office if the job requires third-party listing for a specific jurisdiction.","metaTitle":"Siemens 3RT1015-2KB42 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens 3RT1015-2KB42 SIRIUS power contactor, Size S00, 24 VDC coil, spring-loaded terminals, IP20, current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.7","Of The Terminal":"IP20","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":"1.25","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,25 ... 2,5 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":"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","Side-By-Side Mounting":"Yes","For Main Current Circuit":"spring-loaded terminals","at AC-2 at 400 V rated value":"3 kW","at AC-4 at 400 V rated value":"6.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (24 ... 14)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","closing power of magnet coil at DC":"2.3 W","holding power of magnet coil at DC":"2.3 W","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"0"}},"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=467994&mlfb=3RT1015-2KB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-2KB42/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT1015-2KB42's depth?","answer":"The depth is 73 mm, with a width of 45 mm and height of 60 mm. That's the standard Size S00 envelope."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-2KB42","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/3RT1015-2KB42 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}}