{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2017-1XF42-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2017-1XF42-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2017-1XF42-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2017-1XF42-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT2017-1XF42-0LA2, 72-125 V DC coil, screw-type terminals, 20-12 A main contacts, 45 mm width, 58 mm height, 73 mm depth.","salesMarkdown":"It carries a 72-125 V DC coil with screw-type terminals, and its main contacts are rated for 20-12 A depending on the duty class. The 45 mm width and 58 mm height let it snap onto a 35 mm DIN rail per DIN EN 50022, with 10 mm clearance needed above and below for arc dissipation. ## Coil voltage and switching performance The DC coil picks up at 70% of rated voltage (about 50 V on a 72 V nominal supply) and drops out at 125% of rated, so it holds in during brownouts down to roughly 50 V and releases cleanly when the control voltage rises above 90 V. Inrush current peaks at 1.1 A, and the operate time runs 25-45 ms with an arcing time of 10-15 ms. That arcing window matters for coordination with upstream fuses or breakers — the contactor clears the arc fast enough to avoid nuisance trips on a typical motor branch circuit. ## Contact ratings across voltages On DC loads, the contactor switches 10 A at 24 V, 2 A at 48 V or 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. For AC motor duty at 230 V it handles 2 hp, and at 480 V it switches 11 A. The AC-4 maximum switching rate is 250 operations per hour, which covers frequent jogging or inching applications. Screw terminals accept solid or stranded wire: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm². Side clearance is only 6 mm, so you can pack multiple units tight in a row.","metaTitle":"Siemens 3RT2017-1XF42-0LA2 SIRIUS Power Contactor, 72-125 V","metaDescription":"Siemens SIRIUS 3RT2017-1XF42-0LA2 power contactor, size S00, 72-125 V DC coil, screw terminals, 20-12 A main contacts. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at DC":"25 ... 45 ms","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"72 ... 125 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-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 50022","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, standing, on horizontal 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","Inrush Current Peak":"1.1 A","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","Instantaneous Contact":"1","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","at AC-2 at AC-3e maximum":"750 1/h","Locked-Rotor Current Peak":"0.04 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"7 mA","at maximum Ith rated value":"4 mm²","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":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"0.04 A","Duration Of Locked-Rotor Current":"250 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A","Without Load Current Share Typical":"0.8 W","closing power of magnet coil at DC":"4.5 W","holding power of magnet coil at DC":"0.75 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","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 ... 16), 2x (18 ... 14), 1x 12","number of NC contacts for main contacts":"0","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","Product Function Short Circuit Protection":"No","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 %","number of NC contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"22 A","up to 70 °C according to IEC 60077 rated value":"18 A","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/356f6920fa3333e7355c1599f79131ca.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=909204&mlfb=3RT2017-1XF42-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2017-1XF42-0LA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2017-1XF42-0LA2 and what is the lead time?","answer":"This contactor is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest lead time."},{"question":"Will 3RT2017-1XF42-0LA2 drop into a panel built for 3RT2016-1AK22?","answer":"Both are size S00 contactors on the same 45 mm footprint with screw terminals and snap-on DIN rail mounting, so the mechanical fit is identical. The difference is the coil voltage — 3RT2017-1XF42-0LA2 uses a 72-125 V DC coil, while the 3RT2016-1AK22 uses a different coil voltage. Verify the control circuit voltage before swapping."},{"question":"What are the key dimensions of this contactor?","answer":"Width is 45 mm, height is 58 mm, and depth is 73 mm. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side."},{"question":"What wire sizes does the screw terminal accept?","answer":"The screw terminals accept solid or stranded wire in these combinations: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2017-1XF42-0LA2","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/3RT2017-1XF42-0LA2 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}}