{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2017-1MB42-0KT0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2017-1MB42-0KT0","canonicalUrl":"https://aoctrl.com/siemens/3RT2017-1MB42-0KT0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2017-1MB42-0KT0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling contactor, Size S00, 24 VDC coil, screw-type terminals, 45 mm width, snap-on DIN rail mounting.","salesMarkdown":"## What this SIRIUS coupling contactor does in the panel The Siemens 3RT2017-1MB42-0KT0 is a SIRIUS coupling contactor in Size S00 — the compact frame for light industrial loads. It switches resistive and motor loads via a 24 V DC coil with a pick-up threshold of 0.85 x rated value, so it pulls in reliably even if the control supply sags to about 20.4 V. The screw-type terminals on the magnet coil accept solid or stranded wire from 0.5 to 4 mm², and the main contacts are rated 20...12 A depending on duty class. At 24 V DC the contactor switches 10 A; at 400 V it handles 3 A. For motor starting on a 230 V single-phase supply it carries 2 hp. ## DIN-rail fit and panel clearances The body is 45 mm wide, 58 mm tall, and 73 mm deep — a tight footprint that leaves room for adjacent devices in a crowded enclosure. ## Switching frequency and thermal limits Rated for 1 000 operations per hour at AC-1 (resistive load), 750/h at AC-2 and AC-3 (motor starting/running), and 250/h at AC-4 (plugging/inching). The AC-3e rating also sits at 750/h. The mechanical life of the contactor typical is 30 million operations.","metaTitle":"Siemens 3RT2017-1MB42-0KT0 SIRIUS Coupling Contactor, 24 VDC","metaDescription":"Siemens SIRIUS 3RT2017-1MB42-0KT0 coupling contactor, Size S00, 24 VDC coil, screw terminals, 10 A at 24 V DC. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"0.5 ... 4 mm²","Width":"45 mm","at DC":"5 ... 20 ms","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"0.5 ... 4 mm²","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.85","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.85","at AC-3e maximum":"750 1/h","For Main Contacts":"20 ... 12","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"Coupling contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"2 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.2 A","at 480 V rated value":"11 A","at 500 V rated value":"2 A","at 600 V rated value":"11 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"0.5 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"1.5 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"8.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"19.4 A","at AC-5b up to 400 V rated value":"9.9 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)","Without Load Current Share Typical":"1.6 W","closing power of magnet coil at DC":"1.6 W","holding power of magnet coil at DC":"1.6 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.5 W","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"200 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"123 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"96 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"74 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"61 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"4 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/08864edc5b0b93671a980838382ca8ef.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=409084&mlfb=3RT2017-1MB42-0KT0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2017-1MB42-0KT0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2017-1MB42-0KT0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for this coupling contactor?","answer":"24 V DC coil with 0.85 pick-up threshold, main contacts rated 20...12 A, 10 A at 24 V DC, 2 hp at 230 V, and 3 A at 400 V. Mechanical life typical 30 million operations."},{"question":"Will 3RT2017-1MB42-0KT0 drop into a panel specified around 3RT2016-1AD02?","answer":"Both are Size S00 contactors on the same 45 mm DIN-rail footprint, so the mechanical fit and rail spacing are identical. The main difference is the coil voltage — the -1AD02 is 24 V AC, while this -1MB42 is 24 V DC — so verify control supply polarity and suppression before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2017-1MB42-0KT0","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/3RT2017-1MB42-0KT0 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}}