{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1017-2KB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1017-2KB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1017-2KB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1017-2KB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1017-2KB42 power contactor, size S00, 24 VDC coil, spring-loaded terminals, 45 mm width, IP20.","salesMarkdown":"Its 24 VDC coil draws 2.3 W during both closing and holding, so the control transformer or DC supply doesn't need a big surge margin. The main contacts are rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — enough for small pumps, fans, or conveyor drives up to about 5.5 kW at 400 V in AC-3 duty. Spring-loaded terminals on both main and control circuits accept 2x (0.25…2.5 mm²) solid or stranded, or 2x (24…14 AWG). No screwdriver needed for the wire connection; strip to 8 mm and push in. Rated operational voltage covers 24 V to 690 V, so the same contactor works across control voltages and motor voltages in mixed panels. ## Short-circuit coordination With type 2 coordination, the manufacturer specifies a gL/gG fuse of 20 A; type 1 coordination allows up to 35 A. That means you can size the upstream protection to the contactor's rating without over-fusing, keeping fault energy low enough that the contactor stays operational after a short-circuit event (type 2) or is at least safe to replace (type 1).","metaTitle":"Siemens 3RT1017-2KB42 SIRIUS Power Contactor, 24 VDC Coil, 4","metaDescription":"Siemens 3RT1017-2KB42 SIRIUS S00 power contactor, 24 VDC coil, 45 mm width, spring terminals, IP20, rated 10 A at 24 V. Active production, available to order. Request a quote.","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":"5.5 kW","at 690 V rated value":"5.5 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"spring-loaded terminals","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"8.5 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=421199&mlfb=3RT1017-2KB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1017-2KB42/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT1017-2KB42 and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What is the depth of the 3RT1017-2KB42?","answer":"The depth is 73 mm, with a width of 45 mm and height of 60 mm."},{"question":"What wire sizes fit the spring terminals on the 3RT1017-2KB42?","answer":"The spring-loaded terminals accept 2x (0.25…2.5 mm²) solid or stranded, or 2x (24…14 AWG) for both main and auxiliary circuits."},{"question":"Will the 3RT1017-2KB42 drop into a panel specified around the 3RT1016-1BB42?","answer":"Both are S00 frame contactors with the same 45 mm width and DIN-rail mounting, so the mechanical fit is identical. The main difference is the coil: the 3RT1016-1BB42 uses a 24 VAC/DC coil, while the 3RT1017-2KB42 is 24 VDC only. Verify the control supply polarity and voltage before swapping."},{"question":"What compliance documentation does Siemens provide for the 3RT1017-2KB42?","answer":"The part carries a substance prohibition date of 01.07.2006, indicating RoHS compliance. Full declarations (RoHS, REACH, UL, IEC) are available from the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1017-2KB42","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/3RT1017-2KB42 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}}