{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2017-2KB42-0LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2017-2KB42-0LA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2017-2KB42-0LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2017-2KB42-0LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT2017-2KB42-0LA0, Size S00, 24 VDC coil, spring-type terminals, 45 x 70 x 121 mm.","salesMarkdown":"The Siemens 3RT2017-2KB42-0LA0 is a SIRIUS power contactor in the compact Size S00 frame (45 mm wide, 70 mm tall, 121 mm deep). The spring-type terminals on the coil side accept solid or stranded wire up to 4 mm². This contactor is a standard building block for DC control circuits in industrial panels — think conveyor brakes, solenoid valves, or DC motor contactors in a 24 VDC control architecture. The key spec for a DC contactor is the current it can break at a given voltage, because DC arcs are harder to extinguish than AC. At 24 VDC, the 3RT2017-2KB42-0LA0 is rated for 10 A. At 48 V and 60 V, that drops to 2 A; at 110 V it's 1 A; at 220 V it's 0.3 A. These are the DC-1 (resistive load) ratings — if you're switching inductive loads (DC-3 or DC-5), expect to derate further or add a snubber. The contactor also carries AC ratings for motor starting: 3 A at 400 V AC-3, 11 A at 480 V, and 11 A at 600 V. That 11 A at 480 V is the figure to watch if you're using this on a 480 VAC motor branch — it's the AC-3 rating that governs contactor life under motor switching. Coil terminals are spring-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded. No screwdriver needed for the coil connection — just strip to 8 mm and push in. If you're stocking spares for a panel that uses the 3RT2326-1BK80 (a larger frame), this won't drop in without rewiring — different footprint and coil voltage. This is the part to order when the BOM says 3RT2017-2KB42-0LA0.","metaTitle":"Siemens 3RT2017-2KB42-0LA0 SIRIUS Power Contactor, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT2017-2KB42-0LA0 power contactor. Size S00, 24 VDC coil, spring-type terminals. Rated for DC-1 switching up to 10 A at 24 V. Current lifecycle stage. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"121 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at DC":"7 ... 20 ms","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.25","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 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power 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","Design Of The Product":"With extended operating range","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"spring-loaded 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","at AC-2 at AC-3e maximum":"750 1/h","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at maximum AC-1 rated value":"4 mm²","at AC in hot operating state":"3.6 W","at AC-2 at 400 V rated value":"5.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"suppressor diode","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus 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":"4 W","closing power of magnet coil at DC":"13 W","holding power of magnet coil at DC":"4 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1.2 W","for AWG cables for auxiliary contacts":"2x (20 ... 12)","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 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"1","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 The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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)","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d7bb63f75574bd94a222044fb271f04a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=24031&mlfb=3RT2017-2KB42-0LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2017-2KB42-0LA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key DC switching ratings for 3RT2017-2KB42-0LA0?","answer":"At 24 VDC it switches 10 A (resistive). At 48 VDC and 60 VDC, 2 A. At 110 VDC, 1 A. At 220 VDC, 0.3 A. These are DC-1 ratings — inductive loads need derating."},{"question":"Where can I buy 3RT2017-2KB42-0LA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm quote and lead time."},{"question":"Will 3RT2017-2KB42-0LA0 drop into a panel wired for 3RT2326-1BK80?","answer":"No — the 3RT2326-1BK80 is a larger frame size with a different coil voltage and terminal arrangement. This Size S00 unit (45 mm wide) is physically smaller and uses a 24 VDC coil; rewiring and re-termination would be required."},{"question":"What compliance documentation does Siemens provide for this contactor?","answer":"Siemens SIRIUS contactors typically carry CE, UL, CSA, and CCC certifications, with RoHS and REACH declarations available from the manufacturer. Specific certificate numbers are not listed in this record but are standard for the SIRIUS line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2017-2KB42-0LA0","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/3RT2017-2KB42-0LA0 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}}